A 54-year-old man has a myocardial infarction, resulting in left-sided heart failure. The nurse caring for the man is most concerned that he will develop edema in what area of the body.

The correct answer is B: Pulmonary. Left-sided heart failure leads to the accumulation of fluid in the lungs, causing pulmonary edema. As the heart fails to pump effectively, blood backs up into the pulmonary circulation, leading to increased pressure in the blood vessels of the lungs. This results in fluid leakage into the alveoli, impairing gas exchange and causing symptoms like shortness of breath and coughing. Peripheral edema (choice A) occurs in right-sided heart failure due to fluid accumulation in the extremities. Liver congestion (choice C) can lead to hepatomegaly but is not the primary concern in this case. Abdominal edema (choice D) may occur in severe cases but is not as immediate a concern as pulmonary edema in left-sided heart failure.