___ and ______ are common causes of morbidity and mortality in patients with acute stroke, particularly those with dense hemiparesis.
a) Hypertension; dyslipidemia
b) Urinary tract infection; sepsis
c) Deep vein thrombosis; pulmonary embolism
d) Aspiration pneumonia; deep vein thrombosis

___ should be used for prophylaxis in most patients with acute ischemic stroke.
a) Antiarrhythmic drugs
b) Anticoagulant therapy
c) Antiplatelet agents
d) Thrombolytic therapy