Guide — Critical Care
Seizure Recognition and Management
Seizure classifications, status epilepticus recognition, nursing interventions, airway priorities, safety measures, postictal assessment, and an overview of continuous EEG monitoring in the ICU.
11 min read · Critical Care
Educational use only. Seizure management — particularly status epilepticus — requires immediate physician-directed care. This content is for learning purposes and does not substitute clinical protocols or emergency response procedures. This material supports nursing education and exam review. It is not medical advice and is not a substitute for clinical judgment, institutional policy, or medical direction. Always follow facility protocols and current provider orders.
What Is a Seizure?
A seizure is a transient episode of abnormal, excessive, or hypersynchronous neuronal activity in the brain. Seizures can produce a wide range of clinical manifestations depending on which brain regions are involved — from subtle staring spells to generalized convulsions.
Epilepsy is a chronic brain disease defined by a predisposition to recurrent unprovoked seizures. Acute symptomatic seizures (provoked) occur in the setting of an identifiable cause such as hypoglycemia, hyponatremia, alcohol withdrawal, brain injury, or hypoxia — and do not automatically indicate epilepsy.
Seizure Classifications
| Type | Features | Clinical Example |
|---|---|---|
| Focal onset aware (simple partial) | Consciousness preserved. Motor, sensory, autonomic, or psychic symptoms limited to one brain region. | Hand twitching, déjà vu, strange smell, rising epigastric sensation |
| Focal onset impaired awareness (complex partial) | Impaired consciousness. Automatisms common (lip smacking, hand picking, walking). | Staring spell with repetitive movements; patient appears confused, does not respond |
| Focal to bilateral tonic-clonic | Begins focally, then spreads to bilateral convulsive activity. | Focal twitching that evolves into full tonic-clonic movements |
| Generalized tonic-clonic (GTC) | Bilateral onset. Tonic phase (stiffening) followed by clonic phase (rhythmic jerking). Loss of consciousness. | Classic 'grand mal' seizure; postictal confusion follows |
| Generalized absence | Brief (5–30 sec) staring spell with abrupt onset and offset. No postictal state. | Child suddenly stops, stares blankly, resumes activity without confusion |
| Myoclonic | Brief, sudden muscle jerks — bilateral, usually without loss of consciousness. | Morning jerks in juvenile myoclonic epilepsy; can appear as 'clumsiness' |
| Atonic (drop attacks) | Sudden loss of muscle tone causing falls. | Sudden head drop or fall without warning — high injury risk |
Status Epilepticus
Status epilepticus (SE) is a neurological emergency defined as:
Operational definition: A seizure lasting ≥5 minutes, OR two or more seizures without return to baseline consciousness between them.
Why 5 minutes? Seizures lasting >5 minutes are unlikely to stop spontaneously and become progressively harder to treat. Neuronal injury begins. Early treatment improves outcomes.
Non-convulsive status epilepticus (NCSE) occurs when seizure activity continues without visible motor manifestations — the patient may appear confused, unresponsive, or comatose. NCSE can only be diagnosed with continuous EEG.
| Phase | Nursing Actions | Medications (per order) |
|---|---|---|
| Early (0–5 min) | Note seizure onset time. Position patient safely (lateral decubitus if possible). Protect head. Call for help. Do not restrain. | None yet — assess and prepare |
| Initial treatment (5–10 min) | IV/IO access if possible. Check blood glucose immediately. Supplemental oxygen. Cardiac monitoring. | Benzodiazepine first-line: lorazepam IV 0.1 mg/kg or diazepam IV/PR; midazolam IM if no IV |
| Established SE (10–30 min, benzodiazepine failed) | Airway management — prepare for intubation if needed. Continue monitoring. Identify and treat underlying cause. | Second-line: fosphenytoin, valproate, levetiracetam, or phenobarbital IV — per physician order |
| Refractory SE (>30 min) | Likely requires intubation, mechanical ventilation, continuous EEG monitoring. | Continuous infusion: propofol, midazolam, or pentobarbital — per physician/intensivist order |
Nursing Interventions During a Seizure
| Action | Details |
|---|---|
| Protect the airway | Position in lateral decubitus (recovery position) if no c-spine concern. Suction available. Never force objects into mouth — it causes injury, not protection. |
| Do not restrain forcibly | Attempt to guide limbs gently from hazards. Forced restraint can cause fractures or soft tissue injury. |
| Protect head | Cushion the head from hard surfaces. Remove surrounding hard objects or move away from edges. |
| Note seizure start time | Duration matters for medication and safety decisions. Status epilepticus threshold is 5 minutes of continuous seizure. |
| Observe and document | Body parts involved, sequence of spread, eye deviation, automatisms, duration. These details help classify the seizure type. |
| Oxygen supplementation | Apply O₂ via facemask during and after the seizure. Hypoxia is common during generalized seizures. |
| IV access and glucose check | Hypoglycemia is a reversible and common seizure cause — treat immediately if low. |
| Remain with patient | Do not leave a seizing patient alone. Continuous monitoring and rapid escalation if duration extends. |
Postictal Assessment
| Assessment Item | Key Notes |
|---|---|
| Level of consciousness | Expect confusion, drowsiness, disorientation — this is normal. Duration typically 5–60 minutes. |
| Orientation | Gradual return of orientation; document the trajectory of recovery. |
| Motor function | Todd's paralysis — transient unilateral weakness after a focal seizure; can last hours; resolves spontaneously. |
| Speech | Transient aphasia possible after dominant hemisphere seizure. |
| Vital signs | Tachycardia, mild hypertension, and hypoxia are common immediately post-seizure. |
| Airway | Aspiration risk in postictal period — maintain lateral position until patient is awake and protective airway reflexes return. |
| Injuries | Assess for tongue lacerations, facial trauma, shoulder dislocation, and long bone fractures from convulsive activity. |
Continuous EEG in the ICU
Continuous electroencephalography (cEEG) monitoring is used in the ICU to detect non-convulsive seizure activity that is not visible clinically. Key indications include:
Nursing role with cEEG: Ensure electrode lead integrity, document clinical events (movements, behavioral changes) alongside EEG timestamps, report technical issues to the EEG team, and maintain scalp and electrode site care to prevent pressure injury.
NCLEX Pearls
Status epilepticus is defined as a seizure lasting ≥5 minutes OR two or more seizures without return to baseline between them.
Never put objects in a seizing patient's mouth. It risks dental injury and aspiration — it does not prevent tongue swallowing.
Hypoglycemia is a common, reversible cause of seizures. Always check glucose immediately.
Todd's paralysis (transient unilateral weakness after focal seizure) can mimic stroke — it resolves within hours and requires only observation.
Position the patient in lateral decubitus (recovery position) during and after a seizure to reduce aspiration risk.
The nursing priority during a seizure is safety and timing — note the start time, do not restrain, protect the head, and call for help.
Related Resources
Standards & sources
Fact-checked Jun 20, 2026This page is written to align with Society of Critical Care Medicine (SCCM) · Surviving Sepsis Campaign · American Association of Critical-Care Nurses (AACN). It is an educational summary, not a citation of any single document — always verify specific doses, values, and protocols against current guidelines and your facility policy. How we source content →