During a physical examination for participation in a sport, a 16-year old girl is noted to have a late apical systolic murmur, which is preceded by a click. The rest of the cardiac examination is normal. She states that her mother also has some type of heart “murmur” but knows nothing else about it. Which of the following is the most likely diagnosis?

a. Atrial septal defect

b. Aortic stenosis

c. Tricuspid regurgitation

d. Mitral valve prolapse

e. Ventricular septal defect

the answer is below…

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