ICU Map
toxicology

Agitation After Antipsychotic Exposure: QT Risk, EPS or NMS?

A complication-first bedside problem for an ICU patient exposed to antipsychotics who develops worsening agitation, rigidity, hyperthermia or electrical instability.

The clinical task is to avoid reflexively escalating antipsychotics when the patient is deteriorating. Reconstruct medication exposure and timing, reassess the cause of agitation, review temperature and neuromuscular findings, and inspect the ECG/QTc and electrolytes.

Phase 1 — Agitation

  • Reassess pain, hypoxemia, withdrawal, sepsis, urinary retention, sleep disruption and delirium drivers before adding medication. Antipsychotics do not correct the underlying cause of ICU delirium.

Phase 2 — New Rigidity / Hyperthermia

  • Stop potentially causative dopamine-blocking drugs and evaluate for NMS while considering serotonin syndrome, malignant hyperthermia, severe infection, withdrawal and other hyperthermic syndromes.

Phase 3 — Electrical Instability

  • Review QT-prolonging co-medications, potassium and magnesium; correct reversible risk factors and avoid further QT-prolonging exposure when risk is clinically important.

Reassessment

Evidence status

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Actionable Clinical Workflows (6)

Step-by-step ICU Processes
Neuromuscular Respiratory Failure

Bedside trajectory assessment, respiratory mechanics, bulbar function, airway timing, and disease-specific immunotherapy in acute neuromuscular crisis.

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ICU Sedation Titration & ABCDEF Liberation

From 'analgesia-first' multimodal pain control and light sedation targeting to daily SAT/SBT coordination, delirium screening, and early mobility.

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Acute Neurologic Deterioration & Brain Death Workflow

From acute GCS drop and herniation emergency measures to emergent CT, neurocritical intervention, and death by neurologic criteria determination.

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Altered Consciousness

From securing the basics to categorizing structural, toxic-metabolic, infectious, and seizure-related causes.

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Deep-Dive Topic Destinations (3)

Reference Knowledge
Antipsychotics in the ICUtoxicology

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

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Serotonin Syndrome & Neuroleptic Malignant Syndrometoxicology

Bedside differentiation and ICU management of serotonin toxicity versus neuroleptic malignant syndrome.

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ICU Sedation, Analgesia, Delirium & Liberationneurology

Analgesia-first sedation, light sedation targets, ABCDEF bundle, spontaneous breathing trials, and non-pharmacologic delirium mitigation.

Explore Topic →