A 15-Year-Old Boy Is Found to Have a Murmur During

question 81

Multiple Choice

A 15-year-old boy is found to have a murmur during a routine sports physical examination.  He has no complaints and has excellent exercise capacity.  His maternal uncle died while swimming at age 24.  The patient's blood pressure is 122/70 mm Hg and pulse is 63/min.  A faint midsystolic murmur is heard along the lower left sternal border when the patient is supine.  When the patient is asked to stand, a 3/6 systolic crescendo-decrescendo murmur is heard in the same location.  Which of the following is the most likely mitral valve abnormality in this patient?

• A)Abnormal mitral leaflet motion
• B)Dilated mitral valve annulus
• C)Mitral annulus calcifications
• D)Prolapse of the mitral valve leaflet
• E)Rupture of chordae tendineae