input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 68-year-old woman presents to the emergency room with chest pain. She reports sudden severe and crushing substernal chest pain that started 1 hour ago. Her past medical history is notable for hypertension, hyperlipidemia, diabetes mellitus, obesity, and a prior myocardial infarction requiring a coronary artery bypass graft 2 years ago. She takes aspirin, metoprolol, lisinopril, spironolactone, atorvastatin, and insulin. She is retired and lives a sedentary lifestyle at home. Her temperature is 98.8°F (37.1°C), blood pressure is 109/68 mmHg, pulse is 118/min, and respirations are 24/min. Before being able to start the physical examination, the patient loses consciousness. Her pulse is palpable but weak. Her blood pressure is now 88/50 mmHg and pulse is 130/min. Her skin is pale, cold, and clammy. An electrocardiogram demonstrates ST elevations in leads I, aVL, V3, V4, V5, and V6. A medication that primarily stimulates which of the following receptors would be most appropriate to improve the hemodynamic status of this patient?   (A) Alpha-2 adrenergic receptor   (B) Beta-1 adrenergic receptor   (C) Beta-2 adrenergic receptor   (D) D2 receptor
output: ['(B) Beta-1 adrenergic receptor <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Alpha-2 adrenergic receptor  (B) Beta-1 adrenergic receptor  (C) Beta-2 adrenergic receptor  (D) D2 receptor <> possible answers', '  A 68-year-old woman presents to the emergency room with chest pain. She reports sudden severe and crushing substernal chest pain that started 1 hour ago. Her past medical history is notable for hypertension, hyperlipidemia, diabetes mellitus, obesity, and a prior myocardial infarction requiring a coronary artery bypass graft 2 years ago. She takes aspirin, metoprolol, lisinopril, spironolactone, atorvastatin, and insulin. She is retired and lives a sedentary lifestyle at home. Her temperature is 98.8°F (37.1°C), blood pressure is 109/68 mmHg, pulse is 118/min, and respirations are 24/min. Before being able to start the physical examination, the patient loses consciousness. Her pulse is palpable but weak. Her blood pressure is now 88/50 mmHg and pulse is 130/min. Her skin is pale, cold, and clammy. An electrocardiogram demonstrates ST elevations in leads I, aVL, V3, V4, V5, and V6. A medication that primarily stimulates which of the following receptors would be most appropriate to improve the hemodynamic status of this patient? <> context']