AssessmentsAortic valve disease
Aortic valve disease
USMLE® Step 1 style questions USMLE
USMLE® Step 2 style questions USMLE
A 68-year-old woman comes to the clinic because she cannot stop bobbing her head. She also mentions that over the past year, she has become increasingly tired during her regular morning walks, and can no longer keep up with her husband. Her temperature is 37.0°C (98.6°F), pulse is 85/min, respirations are 12/min, and blood pressure is 150/60 mm Hg. Physical examination shows head bobbing and visibly alternating flushing and pallor of the nail beds that coincide with each brachial pulse. An immediate, high-pitched, decrescendo blowing murmur is heard at the left sternal border during diastole on auscultation. Which of the following is the most likely cause of this condition?