A 62 year-old man suddenly began to experience difficulty speaking and left-sided weakness. He is brought to the ER. He meets initial criteria for fibrinolytic therapy and a CT scan of the brain is ordered. Guidelines for antiplatelet and antothrombotic therapy are:
Administer heparin if CT scan is negative for hemorrhage
Give aspirin 160 mg and clopidogrel 75 mg orally
Administer aspirin 160-325 mg orally chewed, immediately
Do not give aspirin for at least 24 hours if tPA is administered