Acute Ischemic Stroke Management

Dual Antiplatelet Therapy (DAPT) and Statin Initiation

The American Heart Association recommends administering aspirin 160-325 mg plus clopidogrel 300-600 mg as loading doses within 12-24 hours after excluding intracranial hemorrhage, followed by atorvastatin 80 mg daily initiated during the acute hospitalization for patients with acute ischemic stroke or high-risk TIA 1, 2, 3
The American College of Cardiology suggests that the loading dose of aspirin ensures rapid and complete inhibition of thromboxane A2-dependent platelet aggregation, and avoid enteric-coated aspirin for loading as it has slower onset of action 1
For patients unable to swallow, the American Heart Association recommends using rectal aspirin 325 mg or enteral tube administration 1, 4
The loading dose of clopidogrel 300-600 mg is critical because standard 75 mg daily dosing takes approximately 5 days to achieve maximal platelet inhibition, and this loading dose rapidly inhibits platelet aggregation, providing immediate antiplatelet effect 1, 2

The American College of Cardiology recommends initiating atorvastatin 80 mg daily during acute hospitalization for patients with ischemic stroke, with a target LDL-C <70 mg/dL for patients with atherosclerotic disease 3, 5
If LDL-C remains ≥70 mg/dL on maximally tolerated statin, the American Heart Association suggests adding ezetimibe, and for very high-risk patients, consider PCSK9 inhibitor if LDL-C >70 mg/dL despite statin plus ezetimibe 3, 5

The American Heart Association advises to rule out intracranial hemorrhage on neuroimaging before administering any antiplatelet loading dose, and if patient received IV alteplase, delay aspirin administration until 24 hours post-thrombolysis 1, 2, 4
The American College of Cardiology recommends monitoring for both minor and major bleeding complications, as DAPT increases moderate-to-severe bleeding risk compared to aspirin monotherapy 1