USMLE Step 1 - Question 30

A 35 year old female with a history of anxiety and panic attacks presents for a routine physical examination. She intermittently experiences palpitations but in general feels well. Physical examination reveals a mid-systolic click at the cardiac apex which moves earlier in systole with standing from a squatting position. No murmur is present. Which of the following is the likely diagnosis?

A. Mitral valve regurgitation

B. Mitral valve stenosis

C. Mitral valve prolapse

D. Normal mitral valve