A 15-year-old girl is brought to the GP for a six-month history of shortness of breath when swimming. She appears healthy and does not have any symptoms of chest pain, syncope, or palpitations. Her vitals are: temperature 98.6F, HR 74, RR 16, BP 118/76. Cardiac examination shows a blowing diastolic murmur at the right upper sternal border. Radial and pedal pulses are 3+. What’s the most likely mechanism for these findings?
Increased cardiac output
Increased pulmonary vascular resistance
Increased systemic vascular resistance
Left ventricular pressure overload
Left ventricular volume overload
—
Cut-to-the-chase Answer (0:48):
—
HY USMLE Answer (3:49):
