ICU Map

Sepsis Recognition, Source Control & De-escalation

From SSC 2026 infection-likelihood/shock-based early treatment and source control to reassessment, de-escalation, and fluid stewardship.

RecognizeAssessDecideDifferentialInterveneReassess
Suspected Sepsis / Infection with Acute Organ Dysfunction
Assessment StepScreen for acute organ dysfunction: Delta SOFA >= 2Explore Topic
Evaluate PaO2/FiO2 ratio, platelets, bilirubin, MAP / vasopressor need, GCS score, and creatinine/urine output. Identify infected vs non-infectious systemic inflammation.
Clinical ActionApply SSC 2026 early treatment framework
Begin resuscitation immediately. Obtain cultures ideally before antimicrobials without harmful delay; give antibiotics ideally within 1 h for septic shock or probable/definite sepsis, and within 3 h after rapid evaluation for possible sepsis without shock. For sepsis-induced hypoperfusion/shock, give an individualized initial crystalloid strategy (SSC suggests at least 30 mL/kg in the first 3 h), start norepinephrine early when needed, and reassess perfusion dynamically.
Differential Branches (2)
1Branch
Decision PointIdentify anatomical infection source & pursue emergent source control (<6–12h)
Antibiotics alone will not sterilize closed-space infection. Urgent surgical/percutaneous source control is time-critical.
Clinical ActionDrainable Collection / Perforated Viscus: Emergent surgical/IR drainage
Laparotomy, percutaneous abscess drainage, nephrostomy for pyonephrosis, or infected line removal.
Clinical ActionNon-Drainable (Pneumonia / Cellulitis): Medical therapy & organ support
Optimize drug dosing (loading doses, continuous beta-lactam infusions), supportive ventilation, and hemodynamic targets.
2Branch
Reassessment / LoopReassess lactate clearance and perfusion indices at 3–6 hours
Monitor serial lactate downtrend interpreted in clinical context alongside capillary refill time (target <= 2s) and urine output (>= 0.5 mL/kg/hr); do not continue fluid boluses solely to normalize lactate once volume responsiveness is exhausted.
Reassessment / LoopAt 48–72 hours: Review microbiology & de-escalate antimicrobialsExplore Topic
Narrow broad-spectrum agents (vancomycin, anti-pseudomonals) based on definitive culture sensitivities; set total duration (typically 5–7 days for responsive uncomplicated infection).

An educational representation of clinical reasoning, not a diagnostic algorithm or personalized medical advice — always apply clinical judgment and institutional protocols.

Caution

Escalate — Red Flags & Critical Warnings

  • Every hour of delay in necessary surgical source control in septic shock significantly increases ICU mortality — involve surgical/interventional services immediately.
  • Continuing unguided broad-spectrum combination therapy beyond 72h without documented microbiological justification drives fungal superinfections and multi-drug resistance.

Related Bedside Clinical Problems (28)

Bedside Presentations
Sudden Hypoxemia

Bedside triage of acute desaturation: signal verification, immediate danger screening (DOPE / tension pneumothorax), oxygen escalation ladder, and mechanism-based differential.

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Acute Hypercapnia & Ventilatory Failure

Triaging rising PaCO2: distinguishing acute uncompensated acidemia from chronic compensation, identifying central vs pump vs dead-space failure, and titrating noninvasive ventilation.

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Sudden Ventilator Deterioration & High Airway Pressures

Algorithmic troubleshooting of acute patient-ventilator collapse: the DOPE framework, peak vs plateau pressure differentiation, auto-PEEP evaluation, and manual bagging separation.

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Linked Deep-Dive Topics (8)

Reference Knowledge
Sepsisinfectious-disease

Life-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.

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Septic Shockcardiovascular

The 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.

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Multidrug-Resistant (MDR) Pathogens & IDSA AMR Guidanceinfectious-disease

Molecular resistance mechanisms (ESBL, AmpC, KPC, NDM, OXA-48, DTR-Pseudomonas, CRAB), the MERINO trial, and modern novel beta-lactamase inhibitor therapeutics.

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Hospital-Acquired Pneumonia (HAP)infectious-disease

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.

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Ventilator-Associated Pneumonia (VAP)infectious-disease

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.

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Necrotizing Soft Tissue Infections (NSTI)infectious-disease

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.

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Shock: Foundational Critical Care Frameworkcardiovascular

Cellular dysoxia, DO2/VO2 physiology, the 4 shock phenotypes, dynamic fluid responsiveness (PLR/PPV) vs fluid tolerance (VExUS), and vasoactive pharmacology.

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Invasive Mechanical Ventilationrespiratory

Complete 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.

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