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 48-year-old man presents to the emergency department with complaints of substernal chest pain for the past 1 hour. The pain is crushing in nature and radiates to his neck and left arm. He rates the pain as 7/10. He gives a history of similar episodes in the past that resolved with rest. He is a non-smoker and drinks alcohol occasionally. On physical examination, the temperature is 37.0°C (98.6°F), the pulse rate is 130/min and irregular, the blood pressure is 148/92 mm Hg, and the respiratory rate is 18/min. The physician immediately orders an electrocardiogram, the findings of which are consistent with an acute Q-wave myocardial infarction (MI). After appropriate emergency management, he is admitted to the medical floor. He develops atrial fibrillation on the second day of admission. He is given a β-adrenergic blocking agent for the arrhythmia. On discharge, he is advised to continue the medication for at least 2 years. Which of the following β-adrenergic blocking agents was most likely prescribed to this patient?
assistant
Atenolol