Pulsus bisferiens occurs in: September 2005
**Core Concept**
Pulsus bisferiens is a type of pulse characterized by two peaks, often associated with **aortic regurgitation** and **hypertrophic cardiomyopathy**. This condition reflects abnormalities in the **cardiovascular system**, particularly in the **aortic valve** and **left ventricular function**.
**Why the Correct Answer is Right**
The correct answer is related to conditions where the **aortic valve** is affected, leading to an abnormal pulse waveform. In **aortic regurgitation**, the **aortic valve** fails to close properly, causing blood to flow back into the **left ventricle** and resulting in a double-peaked pulse.
**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it is not directly related to the characteristic double-peaked pulse of pulsus bisferiens.
**Option B:** Incorrect as it does not typically produce a bisferiens pulse.
**Option C:** Incorrect because it is not commonly associated with this specific type of pulse.
**Clinical Pearl / High-Yield Fact**
Pulsus bisferiens is a key clinical finding that can indicate underlying **cardiovascular disease**, particularly **aortic regurgitation**. Recognizing this pulse can prompt further investigation into **cardiac function**.
**Correct Answer:** D. Aortic regurgitation