What is the recommended acute and secondary management for a patient with suspected stroke?

Acute and Secondary Stroke Management

For suspected acute stroke, immediately activate 9-1-1 for rapid EMS transport to a stroke center, prioritize IV thrombolysis within 4.5 hours and mechanical thrombectomy within 24 hours for eligible patients, then initiate aggressive secondary prevention with antithrombotic therapy, intensive blood pressure control, and lifestyle modification. 1, 2

Prehospital Management

Call 9-1-1 immediately - EMS transport is associated with 2-fold higher odds of arriving within 3 hours and faster treatment times compared to private transport 1. EMS personnel should:

• Use validated stroke assessment tools (e.g., Cincinnati Prehospital Stroke Scale, FAST)
• Minimize on-scene time (median should be ≤15 minutes)
• Transport directly to the nearest stroke center capable of providing appropriate care
• Pre-notify the receiving hospital to activate the stroke team 1

Common pitfall: Only 52% of stroke cases are correctly identified by EMS dispatch, and only 60% of stroke patients use EMS, leading to treatment delays 1.

Acute Hospital Management (First 24 Hours)

Immediate Evaluation and Imaging

Upon ED arrival, obtain:

• Brain imaging (CT or MRI) within 20 minutes of arrival to exclude hemorrhage
• Vascular imaging to identify large vessel occlusion if thrombectomy is being considered
• Blood glucose, complete blood count, coagulation studies, troponin, ECG 2

Reperfusion Therapy Decision Algorithm

IV Thrombolysis (Tenecteplase preferred over alteplase):

• Time window: Symptom onset ≤4.5 hours
• Eligibility: Disabling neurologic deficit, no hemorrhage on imaging, no absolute contraindications
• Goal: Door-to-needle time ≤60 minutes (ideally ≤45 minutes) 3, 2

Mechanical Thrombectomy:

• Time window: Up to 24 hours from last known well (with advanced imaging selection after 6 hours)
• Eligibility: Large vessel occlusion (ICA, M1/M2 MCA), NIHSS typically ≥6, favorable imaging profile
• Approach: Thrombolysis does NOT need to be withheld as "bridging therapy" is beneficial 3, 2

Acute Medical Management

Blood Pressure:

• If receiving thrombolysis: Maintain BP <185/110 mmHg before treatment, <180/105 mmHg for 24 hours after
• If NOT receiving thrombolysis: Permissive hypertension is acceptable (up to 220/120 mmHg) unless other indications for treatment exist 2

Glucose Control:

• Target normoglycemia (avoid both hyper- and hypoglycemia)
• Treat glucose >180 mg/dL 2

Temperature and Oxygenation:

• Treat fever (>38°C)
• Supplemental oxygen only if hypoxic (SpO2 <94%) 4

Dysphagia Screening:

• Screen ALL patients before oral intake to prevent aspiration pneumonia 2

Secondary Prevention (Initiate Within 48 Hours)

Antithrombotic Therapy

The choice depends on stroke etiology - this is why diagnostic workup to determine mechanism is critical 5:

For Non-Cardioembolic Stroke:

• Dual antiplatelet therapy (aspirin + clopidogrel) for 21 days ONLY in:
  • Minor stroke (NIHSS ≤3) presenting within 24 hours, OR
  • High-risk TIA 5
• Single antiplatelet (aspirin, clopidogrel, or aspirin-dipyridamole) for all others long-term
• Do NOT use dual antiplatelet therapy long-term 5

For Atrial Fibrillation:

• Anticoagulation (direct oral anticoagulant preferred over warfarin)
• Timing: Typically start 4-14 days after stroke depending on infarct size
• Never combine anticoagulation with antiplatelet therapy for secondary stroke prevention 5

For Cryptogenic Stroke:

• Perform prolonged cardiac monitoring (≥30 days) to detect occult atrial fibrillation
• If no AF found, use antiplatelet therapy 5

Vascular Risk Factor Management

Blood Pressure (Most Important):

• Target <130/80 mmHg for most patients
• Initiate or resume antihypertensive therapy after first few days of acute stroke
• Use multidrug regimen as needed to achieve goal 5

Lipids:

• High-intensity statin for all patients with atherosclerotic stroke
• Target LDL <70 mg/dL (consider <55 mg/dL for very high-risk patients)
• Add ezetimibe or PCSK9 inhibitor if statin alone insufficient 5

Diabetes:

• Target HbA1c <7% (individualize based on comorbidities)
• GLP-1 receptor agonists are now recommended for cardiovascular risk reduction in appropriate patients 6

Smoking:

• Mandatory cessation counseling and pharmacotherapy
• Use combination behavioral support and nicotine replacement or varenicline 5

Lifestyle Modifications

Diet:

• Mediterranean diet or DASH diet (low sodium <2g/day)
• These are the only diets with evidence for stroke risk reduction 5

Physical Activity:

• Moderate-to-vigorous aerobic exercise 3-4 sessions/week, 40 minutes/session
• Supervised programs preferred given fall risk in stroke survivors 5

Critical caveat: Simple advice is insufficient - use structured behavioral change programs with multidisciplinary support to achieve adherence 5.

Key Pitfalls to Avoid

1. Don't delay thrombolysis waiting for thrombectomy - bridging therapy improves outcomes 3
2. Don't combine anticoagulation with antiplatelet therapy for secondary prevention (except very specific scenarios like mechanical heart valves) 5
3. Don't use dual antiplatelet therapy long-term - only for 21 days in minor stroke/high-risk TIA 5
4. Don't aggressively lower blood pressure in acute phase unless giving thrombolysis or BP >220/120 mmHg 2
5. Don't miss atrial fibrillation - requires prolonged monitoring, not just admission telemetry 5