USMLE Step 1 - Question 20

A 67 year old female with a history of breast cancer and tobacco use complains of dizziness and dyspnea on exertion. Her heart sounds are distant and her systolic blood pressure is noted to markedly decrease with inspiration. Which of the following is the likely diagnosis?

A. Restrictive cardiomyopathy

B. Mitral valve regurgitation

C. Congestive heart failure

D. Pulmonary embolus

E. Cardiac tamponade