A 72-year-old man is taken to the hospital after experiencing severe substernal chest pain and shortness of breath for several hours. The pain began unexpectedly while he was outside working in the garden. Diabetes mellitus controlled by diet and hypertension are among the medical history. A physical exam reveals bilateral crackles as well as a third heart sound. The ECG shows ST elevation in several leads. The patient has an acute myocardial infarction that is complicated by acute severe heart failure. He has begun dobutamine infusion and is being prepared for coronary catheterization. Which of the following is most likely to be increased due to the medication used in this patient?

Question

A 72-year-old man is taken to the hospital after experiencing severe substernal chest pain and shortness of breath for several hours. The pain began unexpectedly while he was outside working in the garden. Diabetes mellitus controlled by diet and hypertension are among the medical history. A physical exam reveals bilateral crackles as well as a third heart sound. The ECG shows ST elevation in several leads. The patient has an acute myocardial infarction that is complicated by acute severe heart failure. He has begun dobutamine infusion and is being prepared for coronary catheterization.   Which of the following is most likely to be increased due to the medication used in this patient?

Quizplus · Accepted Answer

Eductional Objective: Dobutamine is a beta adrenergic agonist with a focus on beta-1 receptors. It increases heart rate and cardiac contractility, which increases myocardial oxygen consumption.

A 72-Year-Old Man Is Taken to the Hospital After Experiencing