ICU Map

Status Epilepticus Emergency Management

From emergent first-line benzodiazepine administration to second-line IV non-sedating AEDs and continuous cEEG anesthetic burst suppression.

RecognizeAssessDecideDifferentialInterveneReassess
Seizure Activity >= 5 Minutes / Non-Convulsive Status Epilepticus
Clinical ActionPhase 1 (0–5 min): Emergent Benzodiazepine AdministrationExplore Topic
Give IV Lorazepam 4 mg (repeat once at 5–10 min if seizure persists) OR IM Midazolam 10 mg (if no IV access). Check fingerstick glucose immediately and administer 50 mL D50W if hypoglycemic.
Decision PointPhase 2 (5–20 min): Urgent IV Non-Sedating Antiepileptic Drug
ESETT trial established equal efficacy among three options: IV Levetiracetam (Keppra 60 mg/kg, max 4500 mg over 10 min), IV Fosphenytoin (20 mg PE/kg over 10 min), or IV Sodium Valproate (40 mg/kg over 10 min).
Differential Branches (2)
1Branch
Reassessment / LoopSeizures Terminated: Initiate maintenance AED dosing & workup
Maintain therapeutic AED levels, obtain non-contrast Head CT and MRI, check antiepileptic drug levels, electrolytes, and toxicology.
2Branch
Critical AlertPhase 3 (>20 min): Refractory Status Epilepticus — Intubation & Continuous Anesthetics
Perform rapid sequence intubation; initiate continuous IV anesthetic infusion (Propofol 2–5 mg/kg/h or Midazolam 0.2–2 mg/kg/h or Ketamine). Connect continuous EEG (cEEG) within 1 hour.
Clinical ActionTitrate anesthetics to Electrographic Burst Suppression on cEEG
Target electrographic seizure cessation on continuous EEG. Deeper background suppression/burst suppression may be used selectively in difficult refractory cases, but a fixed 10–15-second suppression interval for every patient is not a universal evidence-based target; duration and weaning should be individualized.
Clinical ActionSuper-Refractory Status (>24h refractory): Multi-modal salvage
Ketamine infusion, inhalational anesthetics (Isoflurane), immunotherapy for autoimmune encephalitis, pyridoxine trial, or ketogenic diet.

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

  • Persistent unexplained coma after convulsive status cessation — 20–40% of patients remain in non-convulsive status epilepticus (NCSE); continuous EEG is mandatory to detect ongoing subclinical electrical seizures.
  • Underdosing first-line benzodiazepines (e.g. giving only 1–2 mg lorazepam) is the leading cause of status progression to refractory status epilepticus — give full guideline doses promptly (Lorazepam 4 mg IV or Midazolam 10 mg IM).

Related Bedside Clinical Problems (15)

Bedside Presentations
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.

View Bedside Problem →
Acute Altered Mental Status & ICU Delirium

Systematic neurologic evaluation: immediate metabolic/toxic screening (glucose, hypoxia, hypercapnia), nonconvulsive status epilepticus exclusion, structural CT triage, and CAM-ICU delirium management.

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New Focal Neurologic Deficit in the ICU

Rapid code-stroke protocol in critical illness: emergent non-contrast CT and CTA, distinguishing acute ischemic stroke (LVO candidate) from intracranial hemorrhage, and managing post-procedural neurological loss.

View Bedside Problem →

Linked Deep-Dive Topics (5)

Reference Knowledge
Status Epilepticusneurology

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

Explore Topic →
Altered Consciousness, Coma, & Delirium in the ICUneurology

ARAS neuroanatomy, structural vs toxic-metabolic coma, the comprehensive Coma Exam (pupils, cold calorics, posturing), FOUR score, and CAM-ICU delirium.

Explore Topic →
Severe Traumatic Brain Injuryneurology

Severe 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.

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Acute Meningitis & Encephalitisneurology

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

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Toxicologic Emergencies in Critical Caretoxicology

Resuscitate 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.

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Evidence status

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