What medications are indicated for an adult with acute left‑sided hemiplegia presumed secondary to an ischemic stroke?

Medication for Left Hemiplegia from Acute Ischemic Stroke

For an adult with acute left-sided hemiplegia from presumed ischemic stroke, immediately administer IV alteplase 0.9 mg/kg (maximum 90 mg) if the patient presents within 4.5 hours of symptom onset and meets eligibility criteria.

Acute Thrombolytic Therapy

The cornerstone medication for acute ischemic stroke causing hemiplegia is IV alteplase, which directly addresses the underlying arterial occlusion and can reduce death and disability 1.

Dosing and Time Windows

• Standard dose: 0.9 mg/kg (maximum 90 mg) given over 60 minutes, with 10% as initial bolus over 1 minute 1
• Within 3 hours: Class I, Level A recommendation - strongest evidence for reducing mortality and improving functional outcomes 1
• 3 to 4.5 hours: Class I, Level B-R recommendation - still effective but with slightly narrower eligibility 1
• Beyond 4.5 hours: May be considered with advanced imaging (DWI-FLAIR mismatch) in select patients 2

Critical caveat: Do NOT use a lower dose (0.6 mg/kg) - this was proven inferior to standard dosing 1.

Eligibility Determination

Before administering alteplase, verify:

• Time from symptom onset (or last known well) is documented
• No active bleeding or recent major surgery
• Blood pressure <185/110 mmHg (treat hypertension first if needed)
• Blood glucose checked and corrected if <60 mg/dL 1
• No recent anticoagulation with elevated INR or direct oral anticoagulants

The 2018 AHA/ASA guidelines note that historical exclusions (age >80, diabetes plus prior stroke, NIHSS >25) may not be justified in practice based on careful analysis 1.

Antiplatelet Therapy

Aspirin 160-300 mg daily should be initiated if:

• Patient is NOT eligible for alteplase (start immediately) 3
• Patient received alteplase (wait 24 hours after thrombolysis) 4

Evidence for Aspirin

When started within 48 hours of stroke onset, aspirin provides:

• 13 fewer deaths or dependent patients per 1000 treated 3
• 10 more complete recoveries per 1000 treated 3
• Reduces recurrent ischemic stroke by 7 per 1000 patients 3
• Small risk: 2 additional symptomatic intracranial hemorrhages per 1000 patients 3

Important warning: Do not give aspirin within 24 hours of alteplase administration due to increased bleeding risk 4.

Supportive Medical Management

Blood Glucose Control

• Treat hyperglycemia to maintain glucose 140-180 mg/dL during first 24 hours 1
• Immediately treat hypoglycemia if glucose <60 mg/dL 1
• Both hyper- and hypoglycemia worsen stroke outcomes

Blood Pressure Management

• Treat severe hypertension (>185/110 mmHg) if thrombolysis is planned 5
• Otherwise, permissive hypertension is generally appropriate in acute phase
• Avoid aggressive BP lowering unless extreme elevations

Temperature Management

• Treat fever - hyperthermia worsens outcomes 1
• Maintain normothermia
• Induced hypothermia is NOT recommended outside clinical trials 1

What NOT to Use

Avoid these medications in acute stroke:

• Urgent anticoagulation (heparin, LMWH) - hemorrhage risks exceed benefits in acute setting 5, 4
• Abciximab - no clinical benefit demonstrated 4
• Ticlopidine - excessive adverse effects 4

Algorithmic Approach

1. Confirm ischemic stroke with imaging (CT to rule out hemorrhage)
2. Document time of onset (or last known well)
3. Check eligibility for alteplase (time window, contraindications, BP, glucose)
4. If eligible and <4.5 hours: Give IV alteplase 0.9 mg/kg immediately
5. If ineligible or >4.5 hours: Start aspirin 160-300 mg
6. Maintain glucose 140-180 mg/dL, treat fever, manage severe hypertension
7. Wait 24 hours after alteplase before starting aspirin

The most recent 2026 AHA/ASA guidelines 6 continue to emphasize rapid thrombolytic therapy as the primary medication intervention, with tenecteplase emerging as an alternative thrombolytic agent under investigation 7, though alteplase remains the standard of care.