During auscultation of a patient's abdomen, you hear a high-pitched sound that resembles the sound of two pieces of sandpaper being rubbed together. This sound is most likely the result of
a. a bruit caused by turbulent blood flow through a partially obstructed artery.
b. a venous hum caused by blood flow through portal veins obstructed by portal hypertension.
c. a murmur caused by turbulent blood flow from an abdominal aortic aneurysm.
d. a friction rub caused by the rubbing together of inflamed layers of the peritoneum.
D
A high-pitched sound that resembles the sound of two pieces of sandpaper being rubbed together is called a friction rub. A friction rub occurs when tumors, inflammation, or infarct cause the visceral layers of the peritoneum to rub together over the liver and the spleen. The sound of a friction rub increases with inspiration. A bruit creates a blowing sound caused by turbulent blood flow through a partially obstructed artery. Bruits can occur with abdominal aortic aneurysm, renal stenosis, and femoral stenosis. A venous hum is a continuous, medium-pitched, fibrillary sound that is usually the result of obstructed portal circulation.
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