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Navigate the ICU library as a hierarchy: system → topic → major topic sections. Expand only what you need.

13 systems106 / 106 topics

Respiratory Critical Care15 topics

Acute Respiratory Distress SyndromeAcute, diffuse inflammatory lung injury causing hypoxemia and bilateral infiltrates not fully explained by cardiac failure or fluid overload.

Open full topic →Overview Definition Physiology Clinical Presentation Diagnosis Severity Differential Diagnosis Management Monitoring Complications Guidelines Landmark Trials Recent Evidence Controversies

Respiratory Failure: Basic PrinciplesCore taxonomy (Types I–IV), alveolar gas exchange physiology, work-of-breathing mechanics, and escalation thresholds in acute respiratory failure.

Open full topic →Overview Classification: Types I through IV Respiratory Failure Physiology of Gas Exchange and Work of Breathing Clinical Presentation and Bedside Recognition Diagnostic Approach & Arterial Blood Gas Interpretation Differential Diagnosis of Acute Respiratory Failure: Type 1 vs Type 2 vs Type 3 vs Type 4 Stepwise Escalation of Respiratory Support Complications of Respiratory Failure & Resuscitation Common ICU Pitfalls Controversies & Areas of Uncertainty

Invasive Mechanical VentilationComplete clinical topic overview. For the full 10-level interactive course, visit Master MV. Covers core ventilator modes, respiratory mechanics (Cstat, Raw, driving pressure), waveform dyssynchrony analysis, VILI prevention, and liberation protocols.

Open full topic →Overview Differential Diagnosis of Sudden Ventilator Deterioration (DOPE Mnemonic)Diagnostic Evaluation: Respiratory Mechanics & Patient-Ventilator Asynchrony Classification of Ventilator Modes & Control Variables Respiratory Mechanics: Compliance, Resistance, Driving Pressure, & Mechanical Power Patient-Ventilator Interaction: Waveform Analysis & Dyssynchrony Ventilator-Induced Lung Injury (VILI) Mechanisms Liberation from Mechanical Ventilation: The ABCDEF Bundle & SBT Protocol Common ICU Pitfalls Controversies & Areas of Uncertainty First-Hour Ventilator Setup: Set, Measure, Reassess Bedside Patient–Ventilator Assessment From a Passed SBT to Safe Extubation

Pneumothorax & Barotrauma in Critical CareTension physiology, point-of-care ultrasound diagnosis, needle/finger/tube thoracostomy, and management of bronchopleural fistulas on mechanical ventilation.

Open full topic →Overview Classification & Etiologies in the ICU Physiology of Tension Pneumothorax & Hemodynamic Collapse Clinical Presentation & Bedside Recognition Diagnostic Imaging & Point-of-Care Ultrasound (POCUS)Differential Diagnosis of Sudden Unilateral Absent Breath Sounds & Shock Emergency Decompression & Chest Tube Management Bronchopleural Fistula (BPF) & Persistent Air Leak on Ventilator Complications of Pneumothorax & Pleural Interventions Common ICU Pitfalls Controversies & Areas of Uncertainty

Hypoxemic Respiratory FailurePathophysiologic mechanisms (shunt vs V/Q mismatch), dynamic ROX index trajectories, P-SILI prevention, and evidence-based oxygen escalation ladders.

Open full topic →Overview The 5 Mechanisms of Hypoxemia & Shunt Physiology Patient Self-Inflicted Lung Injury (P-SILI) & Spontaneous Effort Hazards Diagnostic Assessment & POCUS Protocol Differential Diagnosis of Severe Type 1 Hypoxemia: Shunt vs V/Q Mismatch The Oxygenation Escalation Ladder & Dynamic ROX Index Trajectories First-Hour Stabilization & Cause Finding Choosing Conventional Oxygen, HFNO, CPAP or NIV Recognizing Failure & Bridging to Intubation Invasive Ventilation, Proning & Rescue Common ICU Pitfalls in Hypoxemic Failure Controversies & Areas of Uncertainty Complications & Escalation Triggers

Hypercapnic Respiratory FailureMechanism-based diagnosis of acute and acute-on-chronic hypercapnia, controlled oxygen, NIV, invasive ventilation, auto-PEEP troubleshooting, neuromuscular monitoring, and post-acute planning.

Open full topic →Overview The Alveolar Ventilation Equation & Dead Space Mechanics Neuromuscular Respiratory Failure Assessment: The 20/30/40 Rule Differential Diagnosis of Type 2 Hypercapnic Respiratory Failure Noninvasive Positive Pressure Ventilation (NIV) Protocol & Titration Common ICU Pitfalls in Hypercapnic Failure Controversies & Areas of Uncertainty First Hour: Stabilize, Phenotype & Reverse the Cause Controlled Oxygen, ABG Interpretation & Acute-on-Chronic Hypercapnia Invasive Ventilation: Protect the Obstructed Lung Auto-PEEP & Dynamic Hyperinflation: Bedside Troubleshooting Post-Acute Planning: Why Did the Patient Retain CO2?Complications & Escalation Triggers

COPD Exacerbation (Acute & Severe)Pathophysiology of acute-on-chronic hypercapnia, controlled oxygen targets (88–92%), evidence-based NIV, and auto-PEEP matching mechanics.

Open full topic →Overview Physiology: Flow Limitation, Hyperinflation, & Oxygen-Induced Hypercapnia Clinical Presentation & The Anthonisen Diagnostic Criteria Diagnostic Evaluation & Differential Mimics Differential Diagnosis of Acute Respiratory Deterioration in COPD Comprehensive Acute Medical Management Noninvasive Ventilation (NIV) Protocol & Auto-PEEP Matching Complications of Acute COPD Exacerbation Common ICU Pitfalls Controversies & Areas of Uncertainty

Asthma (Severe & Near-Fatal Exacerbation)Pathophysiology of dynamic hyperinflation, auto-PEEP hemodynamics, stepped acute pharmacotherapy, and ventilator mechanics in status asthmaticus.

Open full topic →Overview Physiology of Airflow Obstruction, Dynamic Hyperinflation, & Auto-PEEP Clinical Presentation, Severity Grading, & The 'Silent Chest'Diagnostic Evaluation & Laboratory Monitoring Differential Diagnosis of Severe Acute Wheezing & Respiratory Distress Stepped Pharmacotherapy & Acute ICU Resuscitation Invasive Mechanical Ventilation Strategy in Near-Fatal Asthma Complications of Status Asthmaticus & Ventilatory Support Common ICU Pitfalls Controversies & Areas of Uncertainty

Severe Community-Acquired Pneumonia (Severe CAP)IDSA/ATS severe CAP criteria, rapid microbiology, targeted empiric antimicrobial regimens, and landmark adjunctive hydrocortisone evidence (CAPE COD).

Open full topic →Overview Microbiology & Host Risk Stratification Severity Stratification: ATS/IDSA ICU Admission Criteria Diagnostic Protocol & Rapid Pathogen Identification Differential Diagnosis of Severe Community-Acquired Pneumonia Empiric Antimicrobial Regimens & PK/PD Dosing Adjunctive Systemic Corticosteroids: The CAPE COD Evidence Complications of Severe CAP & Pleural Space Management Common ICU Pitfalls Controversies & Areas of Uncertainty

Acute Pulmonary EmbolismPulmonary vascular occlusion, acute RV pressure overload, ESC/AHA risk stratification, systemic thrombolysis, catheter-directed therapies, and hemodynamic support.

Open full topic →Overview Pathophysiology: Pulmonary Vascular Obstruction & Ventricular Interdependence Diagnostic Evaluation & 2026 Multisociety Risk Stratification (Categories A–E)Differential Diagnosis of Acute Hemodynamic Collapse & RV Strain Stepped ICU Resuscitation & Reperfusion Protocols 2026 AHA/ACC Acute PE Categories at the Bedside RV-Protective Resuscitation in Deteriorating PE Airway & Ventilation in Massive/High-Risk PE Selecting Systemic Lysis, Catheter Therapy, Surgery or ECMO Anticoagulation Choice, Transition & Duration Post-PE Follow-Up, Functional Recovery & CTEPD/CTEPH Complications & Long-Term Sequelae Common ICU Pitfalls Controversies & Areas of Uncertainty

Interstitial Lung Disease (ILD) in the ICUAcute exacerbation and decompensated ILD: differential diagnosis, HRCT patterns, oxygen/NIV/HFNC, ventilation strategy, immunosuppression limits, and transplant decisions.

Open full topic →Acute respiratory failure in ILD has a high-risk differential HRCT pattern plus exclusion of reversible causes Fibrotic lungs are stiff and poorly recruitable Noninvasive oxygen support and goals of care Invasive ventilation when required Steroids and disease-specific immunosuppression RV failure, pneumothorax and ventilator injury Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Pneumonia Variants in the ICUPattern-based ICU pneumonia approach: severe CAP, HAP/VAP, aspiration, viral, necrotizing, immunocompromised and nonresolving pneumonia.

Open full topic →Pneumonia in the ICU is not one disease Classify the pneumonia phenotype before choosing therapy Severe CAP HAP and VAP Aspiration, viral and necrotizing variants Immunocompromised host Nonresolving pneumonia is a diagnostic problem Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Life-Threatening HemoptysisAirway-first management of clinically significant hemoptysis with localization, bronchoscopy and bronchial artery embolization

Open full topic →Define severity by physiologic threat, not a rigid volume cutoff Protect the nonbleeding lung and secure a large airway when needed Correct reversible bleeding drivers Localize bleeding with bronchoscopy and CT/CTA according to stability Bronchial artery embolization is first-line definitive therapy for many cases Topical/endobronchial measures are bridges Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Pleural Infection / EmpyemaDiagnosis and source control of complicated parapneumonic effusion and empyema with drainage, tPA/DNase and surgical escalation

Open full topic →Sample suspected infected pleural fluid when safe and clinically indicated Drain infected pleural collections Use antibiotics with anaerobic coverage when appropriate Consider intrapleural tPA plus DNase when drainage is inadequate Escalate early when medical drainage fails Ventilated and unstable patients need source-control focused reassessment Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Bronchoscopy in the ICUSafe diagnostic and therapeutic bronchoscopy in hypoxemic, mechanically ventilated and bleeding ICU patients

Open full topic →Use bronchoscopy when the result or intervention can change management Assess physiologic risk before starting Expect worsened airway resistance and gas exchange during bronchoscopy Choose BAL strategy based on the diagnostic question Therapeutic bronchoscopy can restore airway patency Monitor for procedure-related deterioration Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Cardiovascular Critical Care15 topics

Shock: Foundational Critical Care FrameworkCellular dysoxia, DO2/VO2 physiology, the 4 shock phenotypes, dynamic fluid responsiveness (PLR/PPV) vs fluid tolerance (VExUS), and vasoactive pharmacology.

Open full topic →Overview The Four Classic Shock Phenotypes Hemodynamic Formulas & Oxygen Transport Physiology Clinical Recognition: The 3 Windows of Perfusion & CRT Protocol Dynamic Fluid Responsiveness versus Fluid Tolerance (VExUS Score)Vasoactive Drug Receptor Pharmacology & Selection Mixed Shock Phenotypes & Diagnostic Reassessment Complications of Circulatory Shock & Resuscitation Common ICU Pitfalls Controversies & Areas of Uncertainty

Acute Cardiogenic Pulmonary Edema & SCAPEHydrostatic pulmonary edema physiology, SCAPE vs decompensated HF vs cardiogenic shock, NIV, titrated vasodilators when hypertensive, diuresis, and sequential nephron blockade.

Open full topic →Overview Pathophysiology: SCAPE vs ADHF vs Cardiogenic Shock Diagnostic Triangulation & POCUS Differentiation from ARDS Differential Diagnosis of Flash Pulmonary Edema & SCAPE Stepped ICU Resuscitation: High-Dose Nitrates, NIV, & Diuresis First 10 Minutes: Respiratory and Hemodynamic Stabilization NIV, Intubation & Peri-Intubation Hemodynamics Vasodilator Selection, Titration & Safety Trigger-Specific Rescue: ACS, Valves, Arrhythmia & Renal Failure Response, Resolution & Post-Crisis Plan ICU Complications & Mechanical Escalation Common ICU Pitfalls Controversies & Areas of Uncertainty

Septic ShockThe subset of sepsis with profound circulatory and cellular/metabolic abnormality — clinically identified by a vasopressor requirement to maintain MAP ≥ 65 mmHg plus lactate > 2 mmol/L despite adequate fluid resuscitation.

Open full topic →Overview Definition Physiology Clinical Presentation Diagnosis Differential Diagnosis Management Monitoring Complications Guidelines Landmark Trials Controversies Critical Care Septic Shock Pitfalls & Practice Red Lines

Cardiogenic ShockPrimary pump failure, SCAI staging (A–E), PAC hemodynamics (CPO, PAPi), inotrope selection, emergent revascularization, and mechanical circulatory support.

Open full topic →Overview Pathophysiology & The Ischemia-Inflammation Spiral Hemodynamic Profiling: Forrester Phenotypes & PAC Metrics SCAI SHOCK Staging System (Stages A through E)Differential Diagnosis of Low-Cardiac-Output Shock Comprehensive ICU Management: Revascularization & Inotropes Temporary Mechanical Circulatory Support (MCS): DanGer Shock & VA-ECMO Complications of Cardiogenic Shock & Mechanical Devices Common ICU Pitfalls Controversies & Areas of Uncertainty First Hour: Stabilize, Find the Cause, Activate the Shock System Hemodynamic Phenotyping & Serial Reassessment Temporary MCS: Selection, Escalation & Weaning

Obstructive ShockExtracardiac mechanical barriers to filling or ejection: Massive PE, Cardiac Tamponade, Tension Pneumothorax, and Auto-PEEP.

Open full topic →Overview The 4 Core Mechanical Etiologies & Pathophysiology Clinical Presentation: Hemodynamic Clues & Cause-Specific Findings Point-of-Care Echocardiography & Ultrasound Diagnostic Protocol Differential Diagnosis of Extracardiac Obstructive Shock Emergency Interventions & Reperfusion Strategies First Five Minutes: Diagnose While Resuscitating High-Risk PE: Reperfusion Decision Framework Tamponade: Drainage, Airway & Bridging Tension Pneumothorax & Dynamic Hyperinflation Complications of Obstructive Shock & Interventions Common ICU Pitfalls Controversies & Areas of Uncertainty

Acute Right Ventricular FailureRV anatomy and ischemia spiral, ventricular interdependence (D-sign), echocardiographic metrics (TAPSE, S', PAPi, VExUS), and the 4-pillar resuscitation strategy.

Open full topic →Overview Anatomy, The Ischemic Death Spiral, & Ventricular Interdependence Bedside POCUS Echocardiography & Hemodynamic Indices Differential Diagnosis of Acute Right Heart Failure The 4-Pillar ICU Resuscitation Strategy RV-Protective Mechanical Ventilation First-Hour Phenotyping & Stabilization Preload, Congestion & Decongestion Hemodynamic Monitoring: Echo, PAC & Trends Mechanical Support, Recovery & Exit Strategy Common ICU Pitfalls in RV Failure Controversies & Areas of Uncertainty Complications & Escalation Triggers

Arrhythmias in Critical IllnessAlgorithmic tachy- and bradyarrhythmia management, new-onset ICU atrial fibrillation, wide-complex tachycardia differentiation, and refractory Torsades overdrive pacing protocols.

Open full topic →Diagnostic Triad: Hemodynamic Stability, 12-Lead ECG & Rhythm Strips Differential Diagnosis of Tachy- and Bradyarrhythmias Overview ICU Arrhythmia Taxonomy & Wide-Complex Differentiation Algorithmic Resuscitation: Unstable Tachycardia & Symptomatic Bradycardia Refractory Torsades de Pointes & Overdrive Pacing Protocols New-Onset Atrial Fibrillation in Critical Illness (AF-CI)Common ICU Pitfalls in Arrhythmia Management Controversies & Areas of Uncertainty Complications & Escalation Triggers First-Hour Rhythm Triage in the ICU Wide-Complex Tachycardia: 2025 Safety Algorithm Symptomatic Bradycardia & Temporary Pacing

Acute Coronary SyndromePlaque rupture, coronary thrombosis, STEMI vs NSTEMI risk stratification, emergent reperfusion, DAPT/anticoagulation, and mechanical/electrical ICU complications.

Open full topic →Overview Pathophysiology: Plaque Rupture, Thrombosis & Ischemic Cascade Diagnostic Evaluation: ECG Patterns, Biomarkers & STEMI Equivalents Differential Diagnosis of Acute Chest Pain & ST Derangements Stepped Medical & Reperfusion Management 2025 NSTE-ACS Risk Stratification & Timing of Angiography Antithrombotic Strategy, Bleeding Risk & Oral Anticoagulation PCI Strategy: Radial Access, Imaging & Complete Revascularization ACS Cardiogenic Shock & Temporary Mechanical Circulatory Support Post-PCI ICU Care & Secondary Prevention ICU-Level Mechanical & Electrical Complications Common ICU Pitfalls Controversies & Areas of Uncertainty

Acute Heart Failure & Cardiogenic CongestionHemodynamic phenotypes (SCAPE vs ADHF vs Cardiogenic Shock), non-invasive positive pressure ventilation, high-dose vasodilator algorithms, loop diuretics, and sequential nephron blockade.

Open full topic →Overview Pathophysiology: Preload, Afterload, Ventricular Interdependence & Cardiorenal Dynamics Clinical Phenotypes & Bedside Diagnostic Workup Differential Diagnosis of Acute Decompensated Heart Failure Stepped ICU Resuscitation & Decongestion Protocols Find and Reverse the Precipitant First-Hour ICU Stabilization Diuretic Response, Resistance & Cardiorenal Interpretation Stabilization, In-Hospital Disease-Modifying Therapy & Discharge When Bedside Assessment Is Not Enough: Hemodynamics & Escalation Complications & Decongestion Monitoring Common ICU Pitfalls Controversies & Areas of Uncertainty

Cardiac Arrest & Post–Cardiac Arrest CareMultimodal resuscitation, post-cardiac arrest syndrome management, targeted temperature control, and delayed neuroprognostication.

Open full topic →Clinical Context & Four Phases of Care Pathophysiology of Reperfusion & Myocardial Stunning Diagnostic Evaluation & The 5Hs and 5Ts Differential Diagnosis of Sudden Collapse & Non-Cardiac Arrest Immediate Post-ROSC Hemodynamic & Ventilatory Stabilization Targeted Temperature Management (TTM2 Paradigm)Coronary Angiography & Percutaneous Intervention Strategy Continuous ICU Multimodal Monitoring Complications & Escalation Triggers Multimodal Neuroprognostication Timeline Critical Care Post-Arrest Pitfalls & Practice Red Lines

Acute Aortic SyndromesEmergency classification, anti-impulse medical stabilization, and surgical vs endovascular management of aortic dissection, intramural hematoma, and penetrating atherosclerotic ulcer.

Open full topic →Clinical Spectrum & The Three Variants Diagnostic Strategy & Imaging Gold Standard Differential Diagnosis & High-Yield Distinctions Medical Anti-Impulse Therapy (Step-by-Step)Definitive Management: Type A Surgical Repair vs Type B Medical Therapy / Selective TEVAR ICU Hemodynamic & Perfusion Monitoring Complications & Escalation Triggers First Hour: Recognition, Anti-Impulse Therapy & Destination How to Read the CTA for ICU Decisions Malperfusion Syndrome: Dynamic vs Static Obstruction Hypotension & Shock in AAS: Do Not Apply the Hypertension Algorithm Intramural Hematoma & Penetrating Aortic Ulcer Post-Repair ICU Care & Long-Term Surveillance

Hypertensive EmergenciesTarget organ damage assessment, intravenous antihypertensive titration, and emergency-specific blood pressure targets.

Open full topic →Definition & Fundamental Distinction Diagnostic Evaluation: Searching for End-Organ Damage Differential Diagnosis of Hypertensive Crises Organ-Specific Blood Pressure Target Matrix First-Line Intravenous Antihypertensive Agents ICU Hemodynamic & Neurological Monitoring First 15 Minutes: Confirm, Phenotype, Treat Encephalopathy/PRES, ICH & Ischemic Stroke Aortic Syndrome, ACS & Pulmonary Edema Refractory Hypertension & Secondary Drivers Transition Off IV Therapy & Disposition Complications & Escalation Triggers Critical Care Hypertensive Pitfalls & Practice Red Lines

Pulmonary Hypertension & Acute DecompensationHemodynamic classification, right ventricular afterload reduction, selective pulmonary vasodilation, and pulmonary hypertensive crisis management.

Open full topic →Hemodynamic Definition & 5 Clinical Groups The Pulmonary Hypertensive Crisis & RV Death Spiral Diagnostic Evaluation of Acute Decompensation Differential Diagnosis of Acute Right Ventricular Failure Management of Acute Pulmonary Hypertensive Crisis ICU Hemodynamic & Right Heart Monitoring Complications & Escalation Triggers Critical Care Pulmonary Hypertension Pitfalls & Practice Red Lines Why the Stable PH Patient Suddenly Crashes Preload Is a Window, Not 'Give Fluids' or 'Diurese Everyone'Airway and Ventilation in Severe PH/RV Failure Continuous Prostacyclin: Never Interrupt the Lifeline Mechanical Support, Septostomy and Transplant Escalation Contemporary PAH Therapy: Beyond AMBITION

Valvular Heart Disease & Infective Endocarditis in the ICUCritical AS, acute AR/MR mechanics, prosthetic valve emergencies, and infective endocarditis with multidisciplinary surgical triggers.

Open full topic →Overview ICU Valvular Hemodynamics Matrix Critical Aortic Stenosis in the ICU Acute Severe Aortic Regurgitation Mitral Stenosis in the ICU Acute Severe Mitral Regurgitation Right-Sided Valve Emergencies & Severe TR Prosthetic Valve Emergencies & Thrombosis Infective Endocarditis & Early Surgery Triggers ICU Monitoring & Hemodynamic Assessment Complications & Red Lines Common Pitfalls & Clinical Pearls

Takotsubo Syndrome (Stress Cardiomyopathy)Transient stress-associated ventricular dysfunction that can mimic ACS and cause pulmonary edema, arrhythmia, LVOTO, thrombus, or cardiogenic shock.

Open full topic →Overview Pathophysiology Diagnosis: Takotsubo vs ACS vs Myocarditis Anatomic & Hemodynamic Variants ICU Management by Hemodynamic Phenotype Complications Thrombus & Anticoagulation Monitoring & Recovery High-Yield Pitfalls First Hour: Treat as ACS Until Dangerous Mimics Are Excluded LVOTO, MR and Shock Physiology Refractory Shock and Temporary Mechanical Circulatory Support After Recovery: Recurrence, Persistent Symptoms and Trigger Evaluation

Hemodynamics & Waveforms1 topics

Hemodynamic Monitoring & WaveformsFrom arterial and venous waveforms to PA catheterization, echo, fluid responsiveness, pressure-volume loops, and integrated shock phenotyping.

Open full topic →Hemodynamics at the Bedside Foundations: Pressure, Flow, Resistance & Coupling Arterial Line Waveforms CVP / Right-Atrial Waveforms Pulmonary Artery Catheter: RA → RV → PA → Wedge Dynamic Fluid Responsiveness Echo-Derived Hemodynamics Pressure–Volume Loops & Ventricular–Arterial Coupling Integrated Shock Pattern Comparison Interpret the Hemodynamic Screen Pitfalls & Artifacts

Renal & Acid–Base7 topics

Continuous Renal Replacement Therapy (CRRT)Principles of convection vs diffusion, filtration fraction, delivered effluent dosing (20–25 mL/kg/h), Regional Citrate Anticoagulation, and citrate toxicity.

Open full topic →Overview Differential Diagnosis of Renal Replacement Modality Selection Diagnostic Evaluation: Urgent 'AEIOU' Indications & Timing of Initiation CRRT Modalities & Physical Transport Mechanisms Clearance Physics, Pre/Post Dilution, & Filtration Fraction Effluent Dose Prescription & The RENAL / ATN Evidence Regional Citrate Anticoagulation (RCA) Protocol & Citrate Toxicity Complications of Continuous Renal Replacement Therapy Common ICU Pitfalls Controversies & Areas of Uncertainty Prescription vs Delivered CRRT Dose Net Ultrafiltration & Hemodynamic Tolerance CRRT Liberation & Transition to Intermittent Therapy

Acid-Base Disorders: Comprehensive Critical Care ApproachStepwise 6-step interpretation algorithm, compensation formulas, albumin-corrected anion gap, delta ratio, and Stewart physicochemical (SID) principles.

Open full topic →Overview Differential Diagnosis of Complex Mixed Acid-Base Disturbances The Systematic 6-Step Interpretation Algorithm Primary Acid-Base Disorders & Precise Compensation Formulas Albumin-Corrected Anion Gap & The Delta Ratio The Stewart Physicochemical Approach (Strong Ion Difference)Sampling, Reliability & First Checks Acute vs Chronic Respiratory Disorders Mixed & Triple Disorders Treatment Principles: Treat the Cause, Not the Number Complications of Severe Acid-Base Derangements Common ICU Pitfalls Controversies & Areas of Uncertainty

Metabolic Acidosis: HAGMA, NAGMA, & Bicarbonate EvidenceDifferential diagnosis (GOLD MARK vs HARDCARP), toxic alcohol osmolar gaps, Urine Anion Gap, and current sodium bicarbonate evidence including BICAR-ICU and BICARICU-2.

Open full topic →Overview Differential Diagnosis of Severe Lactic Acidosis & NAGMA High Anion Gap Metabolic Acidosis (HAGMA) & GOLD MARK Toxic Alcohol Evaluation & The Serum Osmolar Gap Normal Anion Gap (Hyperchloremic) Metabolic Acidosis (NAGMA)Sodium Bicarbonate Therapy: BICAR-ICU, BICARICU-2, and 2026 SSC First-Hour Approach to Severe Metabolic Acidemia Lactate Is a Phenotype, Not a Diagnosis Ketoacidosis: DKA, Euglycemic DKA & Alcohol-Related States When to Escalate to Kidney Replacement Therapy Complications of Metabolic Acidosis Common ICU Pitfalls Controversies & Areas of Uncertainty

Severe Hyperkalemia in Critical IllnessNernst resting potential mechanics, ECG progression, the 3-step resuscitation framework (Stabilize, Shift, Eliminate), and post-dialysis rebound kinetics.

Open full topic →Diagnostic Triad: Rapid Serum Verification, ECG Staging & Hemolysis Exclusion Differential Diagnosis of Severe Electrolyte Emergencies Overview Electrophysiology & The Nernst Equation of Cardiac Arrest Step 1: Cardiac Membrane Stabilization (IV Calcium)Step 2: Transcellular Potassium Shifting Step 3: Total Body Potassium Elimination & Rebound Kinetics Complications of Hyperkalemia & Resuscitation Common ICU Pitfalls Controversies & Areas of Uncertainty

Acute Kidney Injury in Critical CareSepsis-AKI microcirculatory decoupling, KDIGO staging, Furosemide Stress Test (FST), urine microscopy, and the AEIOU dialysis threshold framework.

Open full topic →Overview Differential Diagnosis of Acute Oliguria & Azotemia in Critical Care Definition & KDIGO Staging Matrix Pathophysiology: Sepsis-AKI, Autoregulation, & Nephrotoxins Diagnostic Protocol: FeNa, FeUrea, & Urine Microscopy Risk Stratification: The Furosemide Stress Test (FST)Indications for Renal Replacement Therapy: The AEIOU Framework Complications of Acute Kidney Injury Common ICU Pitfalls Controversies & Areas of Uncertainty First-Hour AKI Phenotyping Fluids, Diuretics & Venous Congestion Recovery, AKD & Post-ICU Kidney Follow-Up

Severe Sodium Disorders: Hyponatremia & HypernatremiaTonicity assessment, etiologic classification, 3% hypertonic saline bolus protocols, individualized ODS-safe correction limits, DDAVP relowering, DI diagnostics, and evidence-aware hypernatremia correction.

Open full topic →Diagnostic Algorithm: Serum Osmolality & Volume Assessment Differential Diagnosis: SIADH vs Cerebral Salt Wasting vs Diabetes Insipidus Overview Hyponatremia Etiologic Framework & Diagnostic Matrix Severe Symptomatic Hyponatremia: 3% Saline, Safety Ceilings & Relowering Severe Hypernatremia: Diabetes Insipidus, Water Deficit & Safe Lowering Kinetics First Hour: Symptoms, Tonicity & Immediate Risk Preventing & Reversing Hyponatremia Overcorrection Hypernatremia: Resuscitation, Water Deficit & Ongoing Losses Dynamic Monitoring & Diagnostic Reassessment Common ICU Pitfalls in Sodium Management Controversies & Areas of Uncertainty Complications & Escalation Triggers

Kidney Transplantation in the ICUICU care of the kidney-transplant recipient: allograft dysfunction, vascular/urologic emergencies, rejection, infection, immunosuppression toxicity and renal replacement decisions

Open full topic →First ICU question: graft, patient, or both?Early allograft dysfunction and delayed graft function Vascular and urologic complications Suspected acute rejection Immunosuppression during critical illness Calcineurin-inhibitor neurotoxicity and PRES Sepsis and infection after kidney transplantation CMV and BK polyomavirus: high-yield graft dysfunction mimics Fluid, electrolyte and metabolic problems Dialysis and CRRT High-risk ICU pitfalls

Endocrine & Metabolic7 topics

Diabetic Ketoacidosis (DKA)Pathophysiology, SGLT2i euglycemic DKA, balanced fluid resuscitation, potassium-before-insulin safety rules, dextrose addition kinetics, and subcutaneous transition.

Open full topic →Overview Pathophysiology: Ketogenesis, Osmotic Diuresis & The Potassium Paradox Diagnostic Criteria & Euglycemic DKA (euDKA)Differential Diagnosis of Severe Metabolic Acidosis with Ketosis Stepped ICU Resuscitation Protocol 2024 DKA Diagnostic & Severity Framework Fluid Resuscitation, Sodium & Osmolality Potassium-First Insulin Safety Resolution, Basal-Insulin Overlap & Avoiding Pseudo-Persistent DKA Special Populations: SGLT2i, Pregnancy, ESKD & Mixed DKA/HHS Complications & Monitoring in the ICU Common ICU Pitfalls Controversies & Areas of Uncertainty

Hyperosmolar Hyperglycemic State (HHS)ICU recognition and treatment of severe hyperglycemia, hyperosmolality and dehydration with careful fluid, potassium and insulin sequencing.

Open full topic →HHS is a hyperosmolar emergency Confirm hyperosmolality and exclude mixed DKA Fluid resuscitation is the first therapeutic priority Start insulin after initial fluids and potassium assessment Potassium can fall rapidly during treatment Resolution is physiologic, not just a glucose target Avoid iatrogenic rapid osmotic shifts Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Adrenal CrisisTime-critical recognition and empiric treatment of acute cortisol deficiency causing shock, electrolyte disturbance and hypoglycemia.

Open full topic →Suspect adrenal crisis early Draw cortisol and ACTH only if it does not delay therapy Give hydrocortisone immediately Restore intravascular volume and glucose High-dose hydrocortisone provides mineralocorticoid activity initially Reassess other shock causes in parallel Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Endocrine Emergencies in Critical CareBedside recognition and organ-support priorities for thyroid storm, myxedema coma, adrenal crisis, pheochromocytoma crisis, and severe hypercalcemia.

Open full topic →The ICU Endocrine Emergency Pattern First Hour: Stabilize Before the Hormone Result Diagnosis: Scores Support, They Do Not Replace Clinical Judgment Mimics and Coexisting Triggers Thyroid Storm: Parallel Multimodal Treatment Thyroid Storm Cardiovascular Phenotypes Myxedema Coma: Resuscitation + Cautious Replacement Adrenal Crisis: Steroid + Volume + Trigger Control Pheochromocytoma/PPGL Crisis: Treat the Phenotype Severe Hypercalcemia: Volume, Rapid Bridge Therapy, Durable Therapy Organ Support and Rescue Escalation ICU Monitoring: Follow Physiology, Not Just Hormone Levels Complications and Failure Modes Bedside Red Lines

Thyroid StormClinical diagnosis and ICU treatment of decompensated thyrotoxicosis with adrenergic, cardiovascular, neurologic and thermoregulatory failure.

Open full topic →Thyroid storm is a clinical diagnosis Control adrenergic excess cautiously Block new hormone synthesis Give iodine after thionamide Add glucocorticoid and treat the precipitant Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls First hour: stabilize physiology while blocking thyroid-hormone effects High-output physiology can evolve into low-output cardiogenic shock Hepatic and gastrointestinal failure change the treatment plan Refractory storm: use adjuncts as a bridge, not as routine first-line therapy Recovery is clinical; plan definitive control before the crisis is forgotten

Myxedema ComaRecognition and ICU treatment of decompensated profound hypothyroidism with altered mental status and multiorgan dysfunction.

Open full topic →Recognize the syndrome clinically—coma is not required Laboratory pattern and diagnostic uncertainty First-hour ICU sequence IV levothyroxine: use a loading strategy with cardiac-risk adjustment Liothyronine is optional—not routine—and carries cardiac risk Give stress-dose hydrocortisone until the adrenal axis is cleared Hypoventilation is a major early threat Hypotension: cautious volume, then vasopressor support when needed Passive warming and careful metabolic correction Find and treat the precipitating event in parallel Diagnostic traps Monitor clinical recovery, FT4 and treatment toxicity Transition out of the emergency phase Bedside synthesis Complications and common pitfalls

Arginine Vasopressin Deficiency (Central DI) & Polyuria in the ICUICU evaluation of hypotonic polyuria and hypernatremia with safe fluid replacement, desmopressin use, and differentiation of AVP deficiency from osmotic and nephrogenic causes.

Open full topic →Confirm true hypotonic polyuria before labeling AVP deficiency Central DI is now termed arginine vasopressin deficiency (AVP-D)Separate water diuresis from solute diuresis Decompensated AVP deficiency is a medical emergency Fluid replacement comes before reflexive desmopressin escalation Use desmopressin deliberately and watch for an abrupt change in water balance AVP resistance/nephrogenic DI: fix the cause and the water deficit After pituitary/neurosurgery, anticipate changing phases Glucocorticoids can unmask AVP deficiency Monitoring intensity follows clinical instability How fast should adult hypernatremia be corrected?Diagnostic traps ICU bedside sequence Bedside framework Complications and common pitfalls

Infectious Disease & Sepsis9 topics

Ventilator-Associated Pneumonia (VAP)Quantitative lower tract sampling (ETA vs BAL), rapid multiplex PCR panels and stewardship interpretation, PK/PD extended beta-lactams, 7-day duration, and the SHEA prevention bundle.

Open full topic →Overview Diagnostic Sampling, Quantitative Cultures & Rapid Multiplex PCR Panels Differential Diagnosis of Ventilator-Associated Deterioration Empiric Antimicrobial Regimens & PK/PD Beta-Lactam Dosing Evidence-Based VAP Prevention: The 2022 SHEA/IDSA Bundle ICU Complications & Treatment Failure Common ICU Pitfalls in VAP Management Controversies & Areas of Uncertainty First Hour: Stabilize, Sample & Protect the Lung Colonization vs Infection: Diagnostic Uncertainty Empiric Therapy by Local Resistance Risk Clinical Response, De-escalation & Duration VAP Prevention: Implementation at the Bedside

Hospital-Acquired Pneumonia (HAP)Nosocomial pneumonia developing ≥ 48 hours after admission in non-ventilated patients, host and antibiogram MDR risk tailoring, nasal MRSA PCR screening, and 7-day de-escalation.

Open full topic →Overview Microbiology, Host Risk Stratification & MDR Risk Logic Diagnostic Protocol & Microbiological Sampling Differential Diagnosis of Hospital-Acquired Pulmonary Infiltrates Tailored Empiric Antimicrobial Regimens & 7-Day De-escalation Complications of Severe HAP Common ICU Pitfalls in HAP Management Controversies & Areas of Uncertainty First Hour: Stabilize, Sample & Start Appropriate Therapy Empiric Coverage by Resistance & Mortality Risk Respiratory Support & ICU Escalation Rapid Diagnostics Without Losing Stewardship Response Assessment, De-escalation & Duration

Multidrug-Resistant (MDR) Pathogens & IDSA AMR GuidanceMolecular resistance mechanisms (ESBL, AmpC, KPC, NDM, OXA-48, DTR-Pseudomonas, CRAB), the MERINO trial, and modern novel beta-lactamase inhibitor therapeutics.

Open full topic →Overview Differential Diagnosis of Multidrug-Resistant Bacterial Pathogens Diagnostic Evaluation: Rapid Phenotypic & Molecular Resistance Detection Gram-Negative Resistance Phenotypes & Preferred Therapies Gram-Positive Resistance: MRSA & VRE Therapeutics Antimicrobial Stewardship & Toxic Salvage Agent Replacement Complications of MDR Infections & Antibiotic Toxicities Common ICU Pitfalls Controversies & Areas of Uncertainty First-Hour Empiric Strategy: Risk, Site and Prior Microbiology Infection Site, Source Control and Drug Penetration PK/PD in Critical Illness, AKI, CRRT and Augmented Renal Clearance Transmission Prevention and Stewardship at the Bedside

SepsisLife-threatening organ dysfunction caused by a dysregulated host response to infection — recognized by an acute rise in SOFA score, not by infection plus fever alone.

Necrotizing Soft Tissue Infections (NSTI)A surgical source-control emergency: recognize rapidly progressive deep infection, involve surgery immediately, start broad antimicrobials, resuscitate shock, and re-explore until source control is complete.

Open full topic →NSTI Is a Surgical Emergency Microbiology and Tissue Destruction Clinical Recognition: Think Deep Before Skin Necrosis Appears First Hour: Surgical Activation + Sepsis Resuscitation LRINEC, Imaging, and Operative Diagnosis Dangerous Mimics Operative Source Control and Serial Re-Exploration Empiric Antibiotics, Cultures, and De-Escalation Streptococcal Toxic Shock and Adjuncts Fournier, Clostridial, Vibrio, and Aeromonas Phenotypes ICU Organ Support After Source-Control Activation After Infection Control: Wound, Nutrition, Reconstruction, Rehabilitation Pitfalls, Adjuncts, and Uncertainty

Immunocompromised & Oncologic Critical IllnessHost immune defects, neutropenic sepsis, acute respiratory failure (PJP/Aspergillus), tumor lysis syndrome, leukostasis, CAR-T CRS/ICANS, and ICU triage.

Open full topic →Overview The Host Immune Defect Framework & Pathogen Risk Febrile Neutropenia & Neutropenic Septic Shock Acute Respiratory Failure in Immunocompromised Hosts Invasive Fungal Infections (Candida, Aspergillus, Mucor, PJP)Tumor Lysis Syndrome (TLS)Hyperleukocytosis & Leukostasis Crisis CAR T-Cell Toxicity: CRS & ICANS Management Other Critical Oncologic Emergencies ICU Admission, Triage & Modern Prognostication ICU Monitoring & Trajectory Assessment Complications & Red Lines Common Pitfalls & Clinical Pearls

Candidemia & Invasive CandidiasisICU recognition and treatment of candidemia and invasive candidiasis, including source control, repeat cultures, step-down therapy and metastatic infection.

Open full topic →Treat Candida in blood as invasive disease Start an echinocandin in most critically ill adults Pursue source control and individualized catheter removal Step down only after stability, susceptibility and clearance Count uncomplicated therapy from documented bloodstream clearance Look for persistent or metastatic infection when clearance is delayed Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Fulminant C. difficile ColitisRecognition and rescue management of fulminant C. difficile infection with shock, ileus or toxic megacolon.

Open full topic →Fulminant disease is defined by physiology, not stool frequency Use high-dose enteral vancomycin plus IV metronidazole Involve surgery early rather than after irreversible shock Resuscitate sepsis while avoiding antimotility drugs Do not anchor on a positive assay alone Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls First hours: treat sepsis and colitis while obtaining surgical input Ileus changes drug delivery—do not interpret absent diarrhea as improvement Do not wait for a single lactate or WBC cutoff to call surgery Rescue FMT is an option for selected nonresponders—not a substitute for needed surgery Reassess the trajectory repeatedly

Febrile Neutropenia & Neutropenic SepsisTime-critical ICU management of fever and organ dysfunction during neutropenia, with early antipseudomonal therapy and source-directed escalation.

Open full topic →Neutropenic sepsis can deteriorate with few localizing signs Give empiric antipseudomonal antibiotics promptly Culture promptly without delaying antibiotics Consider invasive fungal disease when fever persists in high-risk prolonged neutropenia Look aggressively for occult sources Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls High-risk neutropenic sepsis: antibiotics and resuscitation are time-critical Prior microbiology should shape empiric therapy more than a generic escalation ladder Persistent fever is a reassessment problem, not an automatic antibiotic-broadening trigger Empiric versus pre-emptive antifungal therapy depends on risk and diagnostic capability De-escalation and duration are individualized

Neurocritical Care12 topics

Altered Consciousness, Coma, & Delirium in the ICUARAS neuroanatomy, structural vs toxic-metabolic coma, the comprehensive Coma Exam (pupils, cold calorics, posturing), FOUR score, and CAM-ICU delirium.

Open full topic →Overview Differential Diagnosis of Unresponsive Coma in the ICU Clinical Spectrum: Coma, Delirium, Sedation, & Locked-In Syndrome The Comprehensive Coma Examination Protocol Coma Severity: The FOUR Score versus Glasgow Coma Scale (GCS)ICU Delirium Assessment & Prevention (PADIS Guidelines)Immediate Resuscitation & Diagnostic Workup Sequence Complications of Coma & Prolonged Delirium Common ICU Pitfalls Controversies & Areas of Uncertainty

Status EpilepticusRecognition and time-sensitive escalation of care for prolonged or repeated seizures.

Open full topic →Overview Definition Diagnosis Differential Diagnosis of Continuous Motor Activity & Coma Management Monitoring Complications Guidelines Landmark Trials Critical Care Status Epilepticus Pitfalls & Practice Red Lines

Intracranial Hypertension & Cerebral EdemaMonro-Kellie doctrine, ICP waveforms (P2>P1, Lundberg A-waves), CPP targets (60–70 mmHg), herniation syndromes, and the 4-tier BTF management protocol.

Open full topic →Overview Monro-Kellie Doctrine, CPP Targets, & ICP Waveform Analysis Herniation Syndromes Taxonomy & Clinical Localization Differential Diagnosis of Acute Elevated Intracranial Pressure Diagnostic Evaluation: Invasive Multimodal Neuromonitoring & Neuroimaging Tiered ICP Management Protocol (BTF 4th Edition & NCS)Landmark Trials: RESCUEicp, DECRA, & Eurotherm3239 Complications of Intracranial Hypertension & Its Therapies Common ICU Pitfalls Controversies & Areas of Uncertainty

Brain Death / Death by Neurologic Criteria (BD/DNC)2023 AAN/AAP/CNS/SCCM consensus guideline: prerequisites, brainstem reflex examination, apnea testing on and off ECMO, valid ancillary tests, plus separate post-declaration donor-management principles.

Open full topic →Overview Altered States of Consciousness: Brain Death vs Coma vs Vegetative State Mandatory Prerequisites & Confounder Exclusion Checklist Step-by-Step Clinical Brainstem Reflex Examination Protocolized Apnea Testing: Standard & ECMO Protocols Valid Ancillary Testing Modalities Organ Donor Management Goals (DMGs) & Resuscitation Common ICU Pitfalls in Brain Death Evaluation Complications & Apnea Test Safety Triggers Observation, Sedative Clearance, Hypothermia & Metabolic Confounders Special Situations: TTM, ECMO, Primary Infratentorial Injury & Pregnancy Communication, Ethics, Law & Family Presence Documentation, Time of Death & Quality Assurance

Acute Ischemic StrokeCore vs penumbra dynamics, ASPECTS & CT perfusion, Tenecteplase/Alteplase thrombolysis, DAWN/DEFUSE 3 extended thrombectomy, BP targets, and malignant MCA hemicraniectomy.

Open full topic →Overview Pathophysiology: Ischemic Core, Penumbra & Malignant Edema Diagnostic Evaluation: NIHSS, Multimodal CT & Perfusion Mismatch Differential Diagnosis of Acute Focal Neurological Deficits Stepped Reperfusion & Critical Care Management Early Rehabilitation & Recovery Planning Malignant MCA Infarction & ICU Complications Common ICU Pitfalls Controversies & Areas of Uncertainty Stroke Systems, Triage & the First 20 Minutes 2026 Reperfusion Selection: Disabling vs Non-Disabling, TNK vs Alteplase & Extended Windows EVT Beyond the Old Template: Large Core, Distal/Posterior Occlusion & Basilar Stroke Post-Reperfusion Neuro-ICU: Deterioration, BP, Hemorrhage, Edema & Swallowing

Intracranial Hemorrhage: ICH & SAHSpontaneous ICH vs Aneurysmal SAH, INTERACT-2/ATACH-2 blood pressure targets, emergency anticoagulant reversal, ENRICH minimally invasive evacuation, ISAT coiling, and Nimodipine for delayed cerebral ischemia.

Open full topic →Overview Differential Diagnosis of Spontaneous Intracranial Hemorrhage Spontaneous Intracerebral Hemorrhage (ICH): Pathophysiology, Scoring & Management Aneurysmal Subarachnoid Hemorrhage (aSAH): Securing, Vasospasm & DCI Complications of Intracranial Hemorrhage Common ICU Pitfalls Controversies & Areas of Uncertainty First Hour: Stabilization, Imaging & Neurosurgical Activation Hematoma Expansion & Repeat Imaging Strategy Neuro-ICU Support: ICP, VTE, Temperature, Glucose & Seizures aSAH Delayed Cerebral Ischemia: Bedside Detection & Escalation Prognosis, Goals of Care & Recovery

Severe Traumatic Brain InjurySevere TBI neurocritical care: prevent hypoxemia/hypotension, treat intracranial hypertension, individualize ventilation/CPP, use evidence-based short antiseizure prophylaxis when chosen, and escalate surgery when indicated.

Open full topic →Diagnostic Evaluation: GCS Staging, Pupillary Exam & Trauma CT Differential Diagnosis of Traumatic Neurological Catastrophe Overview Pathophysiology: Primary vs Secondary Injury & The Lethal Thresholds Stepped Neuro-ICU Resuscitation: The BTF 4th Edition & SIBICC Tiered Algorithm Adjunctive ICU Care: Seizure Prophylaxis, Tranexamic Acid & Coagulopathy Complications & Monitoring in Severe TBI Common ICU Pitfalls Controversies & Areas of Uncertainty First-Hour TBI Resuscitation: Oxygenation, Perfusion, Hemorrhage & Surgical Lesions Multimodal Monitoring & Critical Neuroworsening Neurosurgical Escalation: Hematoma Evacuation, EVD & Decompressive Craniectomy Neuroprognostication, Goals of Care & Recovery

Acute Meningitis & EncephalitisCT-before-LP criteria, CSF interpretation matrix, de Gans Dexamethasone timing, empiric age/host antimicrobial coverage + Ampicillin + Acyclovir, and neurocritical ICP management.

Open full topic →Overview Pathophysiology: Blood-Brain Barrier Disruption, Purulence & Edema Diagnostic Sequence, CT-Before-LP Criteria & CSF Interpretation Differential Diagnosis of Acute Febrile Encephalopathy Stepped Empiric Pharmacotherapy & Neuro-ICU Resuscitation First-Hour Suspected CNS Infection Bundle CT Before LP: Who Actually Needs Imaging?Host-Directed Empiric Antimicrobial Strategy Encephalitis Pathway: HSV/VZV, Autoimmune & Mimics Seizures, Intracranial Pressure & ICU Neuro-Monitoring De-Escalation, Isolation, Contact Prophylaxis & Sequelae ICU-Level Complications & Neuro-Monitoring Common ICU Pitfalls Controversies & Areas of Uncertainty

ICU Sedation, Analgesia, Delirium & LiberationAnalgesia-first sedation, light sedation targets, ABCDEF bundle, spontaneous breathing trials, and non-pharmacologic delirium mitigation.

Open full topic →The Modern PADIS Paradigm: Analgesia-First & Light Sedation Validated ICU Assessment Scales: Pain, Sedation & Delirium Differential Diagnosis of Acute ICU Agitation & Altered Sensorium Pharmacological Strategy: Non-Benzodiazepine Preference & HIET The ABCDEF Liberation Bundle & Paired SAT/SBT ICU Sedation Safety & PRIS Surveillance Complications & Escalation Triggers Set the Sedation Goal Before Choosing the Drug Spontaneous Awakening Trial: Safety Screen, Failure & Restart Delirium: Phenotype, Mimics & What a Positive Screen Means Dangerous Agitation: Rescue Without Losing the Diagnosis Iatrogenic Withdrawal, Tolerance & Prolonged Sedation Sleep, Mobility & Cognitive Recovery

ICU-Acquired Weakness (CIP/CIM)Critical illness polyneuropathy and myopathy: recognition, risk reduction, diagnostic approach, ventilator liberation, rehabilitation, and prognosis.

Open full topic →Overview Bedside Recognition Exclude Other Causes Electrophysiology and Further Testing Risk Reduction & Management Ventilator Liberation & Rehabilitation Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Myasthenia Gravis & Myasthenic CrisisDedicated ICU management of myasthenic crisis: respiratory mechanics, airway timing, IVIG/plasma exchange, trigger control, medication hazards, and extubation.

Open full topic →Myasthenic crisis is respiratory or bulbar failure from impaired neuromuscular transmission Recognize bulbar and respiratory deterioration before ABG failure Airway timing and respiratory mechanics IVIG or plasma exchange plus immunotherapy Ventilation, secretions and pyridostigmine Drugs that can worsen myasthenia Extubation readiness is neuromuscular, not just gas exchange Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Guillain–Barré Syndrome (GBS)Dedicated ICU GBS care: respiratory surveillance, autonomic instability, IVIG/plasma exchange, airway strategy, pain/DVT prevention, and complications.

Open full topic →GBS can deteriorate rapidly despite preserved oxygenation Clinical pattern plus supportive testing Predict impending respiratory failure IVIG and plasma exchange are effective; corticosteroids are not Airway and neuromuscular blocker safety Dysautonomia is an ICU emergency Recovery and liberation Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Hematology & Coagulation10 topics

Major Bleeding, Hemorrhagic Shock, & Damage Control ResuscitationThe trauma lethal diamond (hypothermia, acidosis, coagulopathy, hypocalcemia), 1:1:1 massive transfusion (PROPPR trial), early TXA (CRASH-2), and TEG/ROTEM algorithms.

Open full topic →Overview Differential Diagnosis of Coagulopathy in Major Hemorrhage The Lethal Diamond of Trauma & Acute Coagulopathy of Trauma (ATC)Damage Control Resuscitation & Massive Transfusion Protocols Viscoelastic Testing: TEG & ROTEM Goal-Directed Hemostasis Complications of Major Hemorrhage & Massive Transfusion Common ICU Pitfalls Controversies & Areas of Uncertainty First 10 Minutes of Life-Threatening Hemorrhage Source Control by Bleeding Phenotype Massive Transfusion: Balanced Start, Goal-Directed Transition Calcium, Temperature & Acid-Base During Hemorrhage Anticoagulant-Associated Major Bleeding

Disseminated Intravascular Coagulation (DIC) & Sepsis CoagulopathyTissue-factor-driven coagulation activation, antithrombin/protein C depletion, PAI-1-associated fibrinolytic suppression, ISTH 2025 DIC assessment, comparison with TTP/HUS/HIT, and targeted replacement.

Open full topic →Overview Pathophysiology: Systemic Coagulation Activation, Anticoagulant Depletion & Fibrinolytic Dysregulation Diagnostic Scoring: The ISTH 2025 Overt DIC & SIC Criteria Differential Diagnosis: DIC vs TTP vs HUS vs HIT Matrix Differential Diagnosis of Microangiopathic & Consumptive Thrombocytopenia Stepped Critical Care Management: Source Control & Targeted Component Therapy Common ICU Pitfalls in DIC Management Controversies & Areas of Uncertainty Complications & Escalation Triggers Early-Phase DIC: Trends, Trigger-Specific Phenotypes & Serial Scoring Bleeding-Predominant DIC: Targeted Component & Fibrinogen Replacement Thrombosis-Predominant DIC & Anticoagulation Special DIC Phenotypes: APL, Obstetric Catastrophe, Trauma & Sepsis

Heparin-Induced Thrombocytopenia (HIT)PF4-heparin antibody Fc-gamma-RIIa platelet activation, the 4Ts score, ELISA OD values vs Serotonin Release Assay (SRA), and direct thrombin inhibitor protocols.

Open full topic →Overview Pathophysiology: PF4-Heparin Complexes & Fc-gamma-RIIa Platelet Activation Clinical Risk Stratification: The 4Ts Pretest Probability Score Laboratory Testing: Immunoassays (ELISA OD) vs Functional Assays (SRA)Differential Diagnosis of Acute Thrombocytopenia in the ICU Therapeutic Management: Direct Thrombin Inhibitors & Warfarin Avoidance Complications of Heparin-Induced Thrombocytopenia Common ICU Pitfalls Controversies & Areas of Uncertainty Suspected HIT: First-Hour Probability-to-Action Algorithm Choosing the Non-Heparin Anticoagulant in Critical Illness Thrombosis Screening, Platelet Recovery & Duration of Therapy Cardiac Surgery, Dialysis, ECMO & Remote HIT

Blood Product Transfusion in Critical CarePatient-specific RBC transfusion thresholds, current platelet/procedural thresholds, plasma/cryoprecipitate use, and the TRALI vs TACO diagnostic matrix.

Open full topic →Overview Diagnostic Evaluation: Transfusion Thresholds & Viscoelastic Hemostatic Assays Red Blood Cell Transfusion Thresholds & Landmark Trials Blood Components: Platelets, FFP, Cryoprecipitate, & 4F-PCC Transfusion Reactions Diagnostic Matrix: TRALI versus TACO Complications of Massive Transfusion & Blood Storage Lesions Common ICU Pitfalls Controversies & Areas of Uncertainty RBC Transfusion: Decide by Clinical Context Platelets & Plasma: Current ICU Threshold Thinking Safe Administration & Bedside Monitoring Suspected Transfusion Reaction: First Response Patient Blood Management in the ICU

Therapeutic Anticoagulation & Emergency Reversal in the ICUUFH vs LMWH vs DTIs (Argatroban/Bivalirudin), anti-Xa vs aPTT monitoring, and emergency reversal (Protamine, 4F-PCC, Idarucizumab; historical andexanet evidence with current availability caveats).

Open full topic →Overview Differential Diagnosis of Anticoagulant-Induced Bleeding & Reversal Urgency Parenteral & Oral Anticoagulant Pharmacokinetics in the ICU Therapeutic UFH Monitoring: Anti-Xa and aPTT in Critical Illness Emergency Anticoagulant Reversal Protocol: Specific Antidotes Periprocedural Interruption & Neuraxial Anesthesia Guidelines Complications of Anticoagulant Therapy Common ICU Pitfalls Controversies & Areas of Uncertainty Critical Bleeding on Anticoagulation: First 15 Minutes Bedside Reversal Matrix: UFH, LMWH, VKA, Dabigatran & Xa Inhibitors Restarting Anticoagulation After Major Bleeding Periprocedural Strategy: Bleeding Risk, Half-Lives, Renal Function & Bridging

Thrombotic Thrombocytopenic Purpura (TTP)Recognition of thrombotic microangiopathy, PLASMIC risk, ADAMTS13 testing, immediate plasma exchange, steroids, caplacizumab, and ICU complications.

Open full topic →TTP is a time-critical hematologic emergency Recognize microangiopathic hemolysis rapidly PLASMIC score and ADAMTS13 strategy Immediate disease-modifying therapy ICU monitoring and treatment response TTP versus DIC, HUS, HIT and malignant hypertension Cardiac and neurologic ischemia can be occult Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Immune Thrombocytopenia (ITP)ICU approach to isolated immune thrombocytopenia, bleeding severity, IVIG/steroids, platelet transfusion in critical bleeding, and rescue therapy.

Open full topic →ITP in the critically ill patient Confirm an isolated platelet disorder and exclude mimics Treat bleeding risk, not the platelet number alone First-line and emergency treatment Refractory disease and thrombopoietin receptor agonists Reassess response and thrombosis risk Do not mislabel TTP or HIT as ITP Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Tumor Lysis SyndromeRisk-stratified prevention and ICU treatment of tumor lysis syndrome with hyperkalemia, hyperphosphatemia, hypocalcemia, hyperuricemia and AKI.

Open full topic →Risk-stratify before anticancer therapy—not after the potassium rises Why TLS kills: potassium and phosphate are often more urgent than uric acid Laboratory versus clinical TLS Prevention = hydration + urate strategy + planned monitoring High-risk patients need telemetry, urine-flow tracking and frequent chemistry Hyperkalemia is the immediate electrical emergency Treat the phosphate burden; do not normalize asymptomatic calcium reflexively Allopurinol and rasburicase do different jobs Rasburicase + G6PD deficiency can cause hemolysis/methemoglobinemia Use kidney replacement therapy early when metabolic load exceeds renal clearance Routine urine alkalinization is not recommended Modern targeted therapy changes the risk map Diagnostic and laboratory traps ICU management sequence Bedside framework Complications and common pitfalls

HLH / Macrophage Activation SyndromeAdult ICU recognition, trigger investigation and individualized treatment of hemophagocytic lymphohistiocytosis/macrophage activation syndrome.

Open full topic →Use the three Fs as an early trigger for HLH thinking HLH-2004 and HScore support probability—they do not replace judgment Initial laboratory and organ-injury workup Find the driver in parallel—especially malignancy, EBV and rheumatic disease HLH and sepsis are not mutually exclusive Treat severe HLH promptly but individualize the regimen to the trigger Trigger-directed treatment is inseparable from HLH control ICU organ support and hemostatic risk Neurologic HLH and encephalopathy Trend response as a multidimensional pattern Refractory or relapsing HLH needs rapid specialist re-phenotyping Diagnostic traps Bedside management sequence Bedside framework Major complications and treatment hazards

TEG / ROTEM & Viscoelastic HemostasisRead whole-blood clot initiation, propagation, firmness and lysis without treating device-specific values as universal transfusion orders.

Open full topic →What TEG / ROTEM adds Parameter map: TEG and ROTEM A phenotype-first bedside algorithm Where the result changes decisions Pitfalls and discordant traces What the evidence does—and does not—show

Gastrointestinal & Hepatic11 topics

Acute Liver Failure (ALF)Hyperammonemia, cytotoxic cerebral edema, balanced coagulopathy, N-acetylcysteine, 3% saline neuroprotection, CRRT ammonia clearance, and King's College transplant criteria.

Open full topic →Overview Pathophysiology: Hyperammonemia, Brain Edema & The Rebalanced Hemostasis Paradox Etiological Diagnostic Workup & Severity Staging Differential Diagnosis of Hyperacute Hepatic Necrosis & Coagulopathy Stepped ICU Resuscitation: NAC, Neuroprotection & CRRT Protocols Immediate Transplant-Center Referral & Parallel Evaluation Etiology-Specific Therapy in the First Hours Cerebral Edema, Ammonia & Neurocritical Care Hemostasis, Infection Surveillance & Procedures Prognosis, King's College Criteria & Listing Decisions ICU Complications & Multiorgan Failure Common ICU Pitfalls Controversies & Areas of Uncertainty

Severe Acute PancreatitisRevised Atlanta severity staging, goal-directed fluid resuscitation informed by WATERFALL, oral/enteral nutrition as tolerated, antibiotic avoidance in sterile necrosis, and the PANTER step-up approach.

Open full topic →Overview Pathophysiology & Revised Atlanta Severity Staging Diagnostic Criteria & Etiological Workup Differential Diagnosis of Severe Epigastric Pain & Systemic Inflammation Stepped ICU Resuscitation: Fluid Protocol, Nutrition & The Step-Up Approach ICU Complications & Abdominal Compartment Syndrome Common ICU Pitfalls Controversies & Areas of Uncertainty First 24 Hours: Severity Triage & Goal-Directed Resuscitation Biliary Pancreatitis: ERCP, MRCP/EUS & Cholecystectomy Nutrition in Severe Pancreatitis Infected Necrosis: Recognition & Antimicrobial Stewardship Necrosis Intervention: Delay When Possible, Step Up When Needed

Upper Gastrointestinal Bleeding (UGIB)Risk-stratified non-variceal and variceal hemorrhage care: resuscitation, selective airway protection, individualized transfusion, PPI or portal-pressure therapy, endoscopic hemostasis, and escalation to IR/TIPS/surgery when indicated.

Open full topic →Diagnostic Triage: Variceal vs Non-Variceal & Risk Stratification Differential Diagnosis of Acute Upper GI Hemorrhage Overview Pathophysiology & The Restrictive Transfusion Paradox (Villanueva Trial)Non-Variceal UGIB (NVUGIB): Peptic Ulcer Disease & Endoscopic Protocols Variceal UGIB (VUGIB): Vasoactive Drugs, Antibiotics, EVL & Early TIPS ICU Complications & Organ Failure Common ICU Pitfalls Controversies & Areas of Uncertainty First Hour: Hemorrhage Resuscitation, Airway & Transfusion Pre-Endoscopic Pharmacology & Preparation Persistent or Recurrent Bleeding: Repeat Endoscopy, IR, TIPS & Surgery Post-Hemostasis ICU Care, Rebleeding Surveillance & Secondary Prevention

Lower Gastrointestinal Bleeding (LGIB)Risk stratification, selective assessment for an upper source, CTA localization of ongoing severe bleeding, endoscopic or catheter therapy, and individualized transfusion/resuscitation.

Open full topic →Clinical Spectrum & Hemodynamic Presentation Diagnostic Approach: Risk Stratification & The UGIB Rule-Out Differential Diagnosis of Lower GI Hemorrhage Resuscitation, Transfusion & Interventional Strategy ICU Monitoring & Serial Assessment Complications & Escalation Triggers Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Acute Mesenteric Ischemia (AMI)Rapid biphasic CTA diagnosis, mechanism-specific revascularization (embolism vs thrombosis vs venous thrombosis vs NOMI), individualized therapeutic anticoagulation, and selective second-look laparotomy.

Open full topic →The Four Subtypes & Time-to-Treatment Window Urgent CTA & The Lactate Myth Differential Diagnosis of Acute Severe Abdominal Pain Mechanism-Specific Resuscitation, Anticoagulation & Revascularization ICU Monitoring & Intra-Abdominal Pressure Complications & Escalation Triggers Reading the CTA: Vessel, Bowel and Complication Findings Choosing Endovascular, Open or Hybrid Revascularization NOMI: Low-Flow Ischemia Without a Large-Vessel Occlusion Mesenteric Venous Thrombosis: Anticoagulate, Then Look for Why After Revascularization: Second Look, Nutrition and Short-Bowel Planning

Critical Illness Nutrition & MetabolismPhased energy and protein delivery, early enteral nutrition when safe, indirect calorimetry, refeeding prevention, feeding-intolerance troubleshooting, and individualized parenteral nutrition timing.

Open full topic →Metabolic Phases & The Enteral Nutrition First Rule Nutritional Risk Stratification & Refeeding Syndrome Screening Differential Diagnosis of Enteral Feeding Intolerance Caloric & Protein Targets: Avoid Overfeeding and Unproven Protein Escalation ICU Nutritional & Tolerance Monitoring Complications & Escalation Triggers Critical Care Nutrition Pitfalls & Special Populations Route and Timing: Oral First, Then Enteral, PN When Needed Indirect Calorimetry and Non-Nutritional Calories Enteral Feeding Intolerance: A Bedside Escalation Algorithm Refeeding Syndrome: Risk, Definition and Response Protein Evidence: Why 'More' Is Not Automatically Better Parenteral Nutrition: Indications, Safe Delivery and Monitoring

Decompensated Cirrhosis & ACLFRecognition and organ-support of decompensated cirrhosis and acute-on-chronic liver failure, including bleeding, infection, encephalopathy and transplant triage

Open full topic →Recognize decompensation and ACLF early Treat infection aggressively and look for SBP Manage suspected acute variceal hemorrhage as a time-critical syndrome Hepatic encephalopathy requires trigger control plus ammonia-lowering therapy Differentiate hypovolemia, ATN and HRS-AKI Escalate early for transplant candidacy and goals-of-care decisions Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Hepatorenal Syndrome–AKIDiagnosis and ICU management of HRS-AKI with albumin, vasoconstrictors, respiratory-safety monitoring, RRT and transplant planning

Open full topic →Use the 2024 ADQI/ICA HRS-AKI framework Use albumin thoughtfully, not as a mandatory 48-hour diagnostic challenge Terlipressin is preferred where available; norepinephrine is an ICU alternative Terlipressin requires respiratory-risk selection and monitoring RRT is a bridge or organ-support decision, not definitive HRS therapy Liver transplantation is definitive therapy for appropriate candidates Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Acute Cholangitis & Biliary SepsisRecognition, antibiotics, resuscitation and urgent biliary source control for severe cholangitis and septic shock

Open full topic →Suspect cholangitis when infection and biliary obstruction coexist Start empiric antibiotics promptly in severe infection Resuscitate septic shock while avoiding source-control delay Biliary drainage is the key source-control intervention Severity determines urgency Treat the obstructing cause after stabilization Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Intra-abdominal Sepsis & Source ControlICU approach to perforation, abscess, postoperative leak, ischemic bowel and complicated intra-abdominal infection

Open full topic →Think anatomy and source, not sepsis alone Start broad empiric therapy matched to severity and resistance risk Source control is a therapeutic priority Do not postpone source control in septic shock Shorter antibiotic courses are often adequate after effective source control Watch for ACS, fistula, recurrent collection and nutrition failure Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Liver Transplantation in the ICUImmediate and subsequent ICU care after liver transplantation: donor type and ischemia exposure, hemodynamics, graft dysfunction, vascular/biliary complications, rejection, infection, AKI, neurotoxicity and immunosuppression

Open full topic →Immediate postoperative priorities Donor type, cold ischemia and warm ischemia Hemodynamics, ventilation and early recovery Early allograft dysfunction and primary nonfunction Vascular complications are time-critical Biliary complications Bleeding and coagulation management Suspected acute rejection Immunosuppression and drug interactions Neurologic deterioration and calcineurin-inhibitor toxicity Infection and sepsis CMV disease in the critically ill liver-transplant recipient AKI and renal replacement therapy Metabolic and extra-graft problems High-risk ICU pitfalls

Obstetric Critical Care1 topics

Obstetric Critical CareMaternal physiology, preeclampsia/eclampsia, HELLP vs AFLP, postpartum hemorrhage (MTP/TXA), peripartum cardiomyopathy, and arrest.

Open full topic →Overview Maternal Cardiopulmonary Adaptation & ICU Interpretation Preeclampsia with Severe Features & Eclampsia HELLP Syndrome & Microangiopathy Differentiation Matrix Postpartum Hemorrhage & Obstetric MTP Peripartum Cardiomyopathy (PPCM)Maternal Sepsis & Septic Shock Amniotic Fluid Embolism (AFE)Acute Fatty Liver of Pregnancy (AFLP)Maternal Cardiac Arrest & Resuscitative Hysterotomy ICU Monitoring in Obstetric Critical Illness Complications & Red Lines Common Pitfalls & Clinical Pearls

Toxicology & Medication Emergencies5 topics

Toxicologic Emergencies in Critical CareResuscitate first, identify toxidromes and ECG/acid-base threats, use toxin-specific antidotes, and escalate early to poison-center, extracorporeal, or ECLS support when physiology demands it.

Open full topic →Toxicology Resuscitation: Physiology First First 10 Minutes ECG, Glucose, Acid-Base and Targeted Testing Toxidromes and Hyperthermic Syndromes Decontamination: Selective, Time- and Airway-Dependent Cardiotoxic Shock Matrix: CCB, Beta-Blocker, Digoxin, Local Anesthetic Sodium-Channel Blockade and Acid-Base-Critical Airways High-Yield Antidotes and Targeted Therapy Hyperthermia, Agitation and Seizures Extracorporeal Treatment: Use Substance-Specific EXTRIP Criteria Dynamic Monitoring Complications, Observation and Disposition Toxicology Red Lines

Antipsychotics in the ICUSafe ICU use of antipsychotics: delirium evidence, agitation control, QTc/torsades risk, NMS, EPS, interactions, and deprescribing.

Open full topic →Where antipsychotics fit in critical care Receptor pharmacology that matters at the bedside Before giving an antipsychotic: define the syndrome Agent selection and practical ICU use QTc, neurologic and hemodynamic monitoring NMS, torsades and extrapyramidal emergencies Evidence and ICU practice boundaries Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Alcohol & Benzodiazepine Withdrawal in the ICURecognition and treatment of severe withdrawal, delirium tremens and withdrawal seizures with symptom-triggered or front-loaded GABAergic therapy.

Open full topic →Distinguish withdrawal from other hyperadrenergic delirium Benzodiazepines remain first-line therapy for alcohol withdrawal Phenobarbital is an experienced-clinician option Alpha-2 agonists and antipsychotics are adjuncts only Give thiamine and correct metabolic deficits Benzodiazepine withdrawal requires controlled replacement and taper Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Serotonin Syndrome & Neuroleptic Malignant SyndromeBedside differentiation and ICU management of serotonin toxicity versus neuroleptic malignant syndrome.

Open full topic →Neuromuscular examination is the fastest discriminator Stop the offending drug(s) immediately Sedation, cooling and organ support are central Cyproheptadine is an adjunct, not a substitute for supportive care Severe NMS may need specialist-directed pharmacologic therapy Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls Hunter criteria help, but exposure history and neuromuscular examination remain central Search for interaction pairs—not only antidepressants Severe hyperthermia is generated by muscle activity—paralyze early when necessary Cyproheptadine has biologic plausibility but uncertain outcome benefit NMS management is trigger withdrawal plus organ support; drug therapy is individualized Prevent recurrence before restarting psychoactive therapy

Tricyclic & Sodium-Channel Blocker ToxicityRecognition and resuscitation of sodium-channel blocker poisoning with seizures, QRS widening, ventricular dysrhythmia and shock.

Open full topic →Use ECG physiology to identify dangerous sodium-channel blockade Sodium bicarbonate is first-line for life-threatening TCA cardiotoxicity Treat seizures with benzodiazepines Avoid class IA/IC antiarrhythmics Escalate refractory shock early Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls Read the ECG as a sodium-channel toxicity phenotype Bicarbonate is titrated to clinical response, sodium and pH—not a fixed number of ampules Airway management must prevent peri-intubation acidemia Refractory shock requires a staged toxicology rescue plan Disposition depends on symptoms and ECG trajectory, not serum TCA levels

Special Critical Care9 topics

ECMO: Physiology, Bedside Management & TroubleshootingSpecialist-level VV/VA ECMO bedside management: selection, cannulation, gas exchange, hemodynamics, anticoagulation, circuit troubleshooting, organ support, ultrasound, ECPR, weaning and decannulation.

Open full topic →What the circuit actually supports ECMO physiology: flow, oxygen delivery, CO2 and mixing Cannulation configurations and why they matter VV-ECMO selection in severe respiratory failure VA-ECMO and ECPR selection VV-ECMO ventilation and gas-exchange strategy Refractory hypoxemia on VV-ECMO: bedside algorithm VV recirculation Low flow, chattering and drainage insufficiency Oxygenator and circuit failure VA-ECMO hemodynamics: afterload, pulsatility and LV distension Differential hypoxemia (Harlequin / North-South syndrome)Anticoagulation, bleeding and thrombosis Neurologic monitoring and acute brain injury AKI, fluid balance and CRRT during ECMO Daily ICU care: sedation, infection, nutrition and mobility Bedside monitoring and ultrasound on ECMO VV-ECMO weaning and sweep-off trial VA-ECMO recovery assessment and weaning Decannulation and post-ECMO surveillance What the major trials actually show Complication map High-risk bedside mistakes to avoid

Burns & Major Burn Critical CareInhalation injury management, endpoint-driven fluid resuscitation, avoidance of fluid creep, bedside escharotomy, and hypermetabolic catabolism support.

Open full topic →The Triad of Major Burn Pathophysiology Diagnostic Assessment: TBSA Estimation & Inhalation Injury Differential Diagnosis of Severe Cutaneous Loss Modern Fluid Resuscitation: Endpoint-Driven Titration Bedside Escharotomy & Burn Wound Care ICU Surveillance: Urine Output, Core Temp & Compartments Complications & Escalation Triggers Critical Care Burn Pitfalls & Special Considerations First-Hour Priorities: Trauma, Airway, Toxins, Temperature and Transfer Inhalation Injury: Upper Airway, Lower Airway and Toxic Gas Are Different Problems Burn Shock Resuscitation: Start Low, Reassess Often, Avoid Fluid Creep Escharotomy vs Fasciotomy: Know Which Pressure Compartment You Are Treating Burn Wound Infection, Excision and Source Control Hypermetabolism, Nutrition, Glycemia and Rehabilitation

Abdominal Compartment Syndrome (ACS)Recognition and treatment of intra-abdominal hypertension and abdominal compartment syndrome: bladder pressure, perfusion, decompression, fluids, ventilation, and organ failure.

Open full topic →ACS is pressure-driven multiorgan failure Measure intra-abdominal pressure through the bladder Why abdominal pressure causes shock and organ failure Stepwise nonoperative pressure reduction Surgical decompression Follow pressure and organ response Open abdomen and reperfusion consequences Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Anaphylaxis & Refractory Anaphylactic ShockImmediate epinephrine-first management of airway edema, bronchospasm, vasoplegia and refractory anaphylactic shock in the ICU.

Open full topic →Treat the clinical syndrome without waiting for tests Intramuscular epinephrine is first line Plan the airway early when edema progresses Use fluids and IV epinephrine infusion for refractory shock Adjuncts treat components, not the core syndrome Observe based on severity and risk Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Goals of Care, Treatment Limitation & Palliative Critical CareStructured ICU communication, surrogate decision-making, treatment-limitation decisions, symptom control, and compassionate withdrawal of life-sustaining treatment.

Open full topic →Goals of care are a clinical process, not a single code-status question Run structured family meetings Translate goals into treatment limits precisely Communicate prognosis and uncertainty without false precision Design a real time-limited trial Symptom control in the ICU Conflict, requests for nonbeneficial treatment and ethics support Withholding and withdrawing life-sustaining treatment Common pitfalls Capacity, Advance Directives and the Surrogate's Role Family-Centered ICU Care Beyond the Formal Meeting Cultural, Spiritual, Religious and Language Needs Comfort-Focused Withdrawal: Practical ICU Workflow

Organ Donation & Donor ManagementEthically separated death determination, timely organ-procurement referral, and physiology-focused donor support after BD/DNC or planned donation after circulatory death.

Open full topic →Separate death determination from donation decisions Anticipate physiology after BD/DNC Assess organ function with the procurement team Hemodynamic donor optimization Diabetes insipidus, temperature and endocrine/metabolic problems Lung-protective donor management Heart, kidney, liver and infection assessment Donation after circulatory death (DCD)Common pitfalls Donor-Management Coordination and Serial Goals Hormonal Resuscitation: What the Randomized Evidence Changed Infection, Cultures and Antimicrobials in the Potential Donor Procurement Handoff, Documentation and Avoidable Donor Loss

Post-ICU Syndrome, Survivorship & RehabilitationPrevention, recognition and follow-up of physical, cognitive and psychological morbidity after critical illness, including ICU-acquired weakness and family impact.

Open full topic →PICS spans physical, cognitive and mental-health domains Begin prevention during the ICU stay Screen before discharge and during follow-up ICU-acquired weakness: identify the phenotype and exclusions Cognition, mood, PTSD and sleep Swallowing, voice, tracheostomy and respiratory recovery Discharge transitions, return to work and caregiver support Recovery requires individualized multidisciplinary follow-up Common pitfalls Who Is High Risk and What Phenotype Is Emerging?Rehabilitation Prescription: Dose Activity to Physiology and Goals PICS-F: Family and Caregiver Morbidity Follow-Up Red Flags and When Not to Call It 'Just PICS'

Polytrauma & Damage-Control Critical CareICU priorities after major multisystem trauma: hemorrhage control, damage-control resuscitation, TBI-aware perfusion, coagulopathy correction, compartment syndromes and staged definitive care.

Open full topic →Prioritize immediately reversible causes of death Damage-control resuscitation is syndrome-specific ICU surveillance after initial damage control Hemorrhage control and massive transfusion When hemorrhage and severe TBI compete Thoracic trauma: deterioration after admission Abdominal, pelvic and compartment physiology Limb ischemia, compartment syndrome and rhabdomyolysis VTE prevention, nutrition and staged recovery Common pitfalls

High-Risk Postoperative ICU CareSystematic postoperative ICU surveillance for bleeding, respiratory failure, myocardial injury, AKI, delirium, infection, pain, nutrition and safe device removal.

Open full topic →The operative handover defines the first ICU differential Treat unexplained deterioration as a surgical complication until proven otherwise Use individualized organ support and avoid routine over-treatment Postoperative bleeding and concealed hemorrhage Postoperative respiratory failure and extubation Myocardial injury, arrhythmia and postoperative shock AKI, fluids and electrolytes Anastomotic leak, ischemia and failed source control VTE prophylaxis and antithrombotic restart Prevent secondary ICU morbidity Common pitfalls

Procedures & Bedside Skills4 topics

Airway Management & Rapid Sequence IntubationThe 7 Ps of ICU intubation, the physiologically difficult airway, BOUGIE/DEVICE video laryngoscopy trials, hemodynamic optimization, waveform capnography, and scalpel-bougie cricothyroidotomy.

Open full topic →Overview The Physiologically Difficult Airway & Peri-Intubation Arrest Dynamics Airway Assessment: The MACOCHA Score & Indications for Intubation Risk Stratification: Anatomically vs Physiologically Difficult Airway The 7 Ps of ICU Rapid Sequence Intubation: Protocol & Drug Selection The Failed Airway & Cannot Intubate / Cannot Oxygenate (CICO) Protocol Common ICU Pitfalls in Airway Management Controversies & Areas of Uncertainty Complications & Escalation Triggers (Cannot Intubate / Cannot Oxygenate)DAS 2025 Airway Strategy: Plan A → B → C → D Preoxygenation, Peroxygenation & Ventilation Between Induction and Laryngoscopy Induction Drug Selection After the 2025 Ketamine-vs-Etomidate Trial The First 10 Minutes After Intubation: Confirm, Sedate, Ventilate & Diagnose Collapse

Central Venous & Arterial Access: ICU Safety & ComplicationsUltrasound-guided vascular access, sterile insertion, tip/position confirmation, and rapid recognition of line-related mechanical and infectious complications.

Open full topic →Choose the least invasive access that meets the clinical need Use real-time ultrasound for central venous access when feasible Maximal sterile barrier precautions prevent infection Recognize mechanical complications immediately Arterial catheter complications are usually ischemic or infectious Confirm location before unsafe use Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Chest Tube & Pleural Drain ManagementUltrasound-guided pleural drain selection, insertion safety, troubleshooting and complication management in critically ill adults.

Open full topic →Match the drain strategy to the pleural problem Use thoracic ultrasound for fluid procedures whenever feasible Small-bore drains are adequate for many indications Understand the drainage system before troubleshooting Deterioration after insertion demands immediate reassessment Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls

Tracheostomy & Difficult Ventilator LiberationSystematic evaluation of failed liberation, tracheostomy timing/selection, cuff and secretion management, and multidisciplinary weaning.

Open full topic →Define why spontaneous breathing trials fail Use protocolized daily readiness assessment and SBTs Tracheostomy timing should be individualized Treat the tracheostomy as an airway with its own hazards Use a multidisciplinary liberation plan Bedside framework Diagnostic traps and differential ICU management sequence Monitoring and escalation Complications and common pitfalls