Cardiovascular effects of Squatting position

Squatting has which of the following cardiovascular effects?

• a.It decreases ventricular filling
• b.It increases the murmur of aortic insufficiency
• c.It decreases the murmur of mitral regurgitation
• d.It decreases the murmur of ventricular septal defect
• e.It has the opposite effect of passive leg raising
• f.It has the same effect as amyl nitrite

The answer is : (b).
Squatting like passive legraising are act to increase ventricular filling. Therefore, they increase blood flow through the heart and increase the murmurs of ech of following : aortic insufficiency, ventricular septal defect, and mitral regurgitation. The hypotensive inhalation agent amyl nitrite decreases the murmurs of AI, VSD, and MR.