The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 22-year-old man with sickle cell disease is brought to the emergency room for acute onset facial asymmetry and severe pain. He was in school when his teacher noted a drooping of his left face. His temperature is 99.9°F (37.7°C), blood pressure is 122/89 mmHg, pulse is 110/min, respirations are 19/min, and oxygen saturation is 98% on room air. Physical exam is notable for facial asymmetry and 4/5 strength in the patient's upper and lower extremity. A CT scan of the head does not demonstrate an intracranial bleed. Which of the following is the most appropriate treatment for this patient?   (A) Alteplase   (B) Exchange transfusion   (C) Heparin   (D) Warfarin
['(B) Exchange transfusion <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Alteplase \n (B) Exchange transfusion \n (C) Heparin \n (D) Warfarin <> possible answers', "  A 22-year-old man with sickle cell disease is brought to the emergency room for acute onset facial asymmetry and severe pain. He was in school when his teacher noted a drooping of his left face. His temperature is 99.9°F (37.7°C), blood pressure is 122/89 mmHg, pulse is 110/min, respirations are 19/min, and oxygen saturation is 98% on room air. Physical exam is notable for facial asymmetry and 4/5 strength in the patient's upper and lower extremity. A CT scan of the head does not demonstrate an intracranial bleed. Which of the following is the most appropriate treatment for this patient? <> context@"]