system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 66-year-old man is brought to the emergency department because of weakness of his left leg for the past hour. He was unable to get out of bed that morning. His pants are soaked with urine. He has hypertension and coronary artery disease. Current medications include enalapril, carvedilol, aspirin, and simvastatin. His temperature is 37°C (98.6F), pulse is 98/min, and blood pressure is 160/90 mm Hg. Examination shows equal pupils that are reactive to light. Muscle strength is 2/5 in the left lower extremity. Plantar reflex shows an extensor response on the left. Sensation is decreased in the left lower extremity. On mental status examination, he is oriented to time, place, and person and has a flat affect. When asked to count backwards from 20, he stops after counting to 17. When asked to name 10 words beginning with the letter “d,” he stops after naming two words. Fundoscopy shows no abnormalities. Which of the following is the most likely cause of this patient's symptoms?
assistant
Right anterior cerebral artery occlusion