Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/2/2025

Management of Acute Ischemic Stroke

Initial Assessment and Stabilization

  • The American Heart Association recommends performing rapid assessment of airway, breathing, and circulation as the first priority for patients with acute ischemic stroke 1, 2
  • A standardized neurological examination using a validated stroke scale such as the National Institutes of Health Stroke Scale (NIHSS) should be conducted to determine focal deficits and stroke severity 2, 3
  • Oxygen saturation should be monitored and supplemental oxygen provided only if oxygen saturation is below 94% 2, 5

Urgent Investigations

  • Urgent non-contrast CT scan of the brain should be performed to exclude hemorrhage and assess for other structural causes 3, 6
  • CT angiography (CTA) may be considered to identify large vessel occlusions that may be eligible for endovascular thrombectomy 3, 6
  • Baseline ECG should be obtained to assess cardiac rhythm and identify atrial fibrillation or evidence of structural heart disease 5, 6

Blood Pressure Management

  • The American Heart Association recommends avoiding routine treatment of hypertension in the acute setting for patients not eligible for thrombolytic therapy 5, 6
  • Extreme blood pressure elevations (systolic >220 mmHg or diastolic >120 mmHg) should be treated by reducing blood pressure by approximately 15%, and not more than 25%, over the first 24 hours 5, 7

Stroke Unit Care

  • The American Heart Association recommends that all patients with acute ischemic stroke be admitted to a stroke unit as soon as possible, ideally within 3 hours of hospital arrival 1, 2
  • Stroke unit care has been shown to reduce mortality and improve functional outcomes with benefits comparable to those achieved with IV thrombolysis 1, 2

Prevention and Management of Complications

  • Temperature should be monitored routinely and treated if above 37.5°C as hyperthermia is associated with increased morbidity and mortality 1, 5
  • Bedside dysphagia screening should be performed before oral intake to prevent aspiration pneumonia 2

Consideration for Endovascular Therapy

  • Patients with large vessel occlusion may still be candidates for endovascular thrombectomy (EVT) even when intravenous thrombolysis is contraindicated 3, 8
  • Eligible patients with large vessel occlusion who can be treated with EVT within 6 hours of symptom onset should receive EVT 8

Secondary Prevention

  • Early aspirin therapy (160-325 mg daily) should be initiated for patients with acute ischemic stroke who are not receiving thrombolysis 1