## What is regurgitant volume?

The regurgitant volume refers to the volume of blood flowing backwards or in the reverse direction through the valvular plane within a beat or cardiac cycle.

## Why do patients with heart failure have mitral regurgitant murmurs?

As pressure rises, fluid builds up in the lungs. Congestive heart failure. In severe mitral valve regurgitation, the heart has to work harder to pump enough blood to the body. The extra effort causes the left lower heart chamber (ventricle) to get bigger.

Why is there volume overload in mitral regurgitation?

Volume overload often occurs in response to mitral or aortic regurgitation, wherein a significant portion of blood ejected by the left ventricle in systole is not delivered to the systemic circulation, but instead is either returned to the left ventricle or delivered to the left atrium (16).

How do you measure regurgitant volume?

The quantity of blood flow (regurgitant flow) can be calculated when the radius of the shell and velocity at its surface are known: Regurgitant flow = Q = 2 x r2 x π x Nyquist vel.

### What is aortic regurgitant fraction?

Aortic regurgitation – or aortic insufficiency – is a disease of the aortic valve whereby blood from the aorta leaks across the valve into the left ventricle during diastole when the valve should be closed. The amount of blood that leaks across the valve during diastole is the regurgitant volume.

### What is mitral regurgitant fraction?

Mitral regurgitant fraction (RF) was calculated as either RF(VOL) = [LVSV – RVSV] or RF(FLOW) = [LVSV – aortic flow volume], both expressed as a fraction of LVSV. The agreement of the measurements was assessed as a measure of robustness in clinical practice.

What is a regurgitant murmur?

[ rē-gûr′jĭ-tənt ] n. A murmur due to leakage or backward flow at one of the valvular orifices of the heart.

Which factor is the most common cause of mitral valve regurgitation in developing countries?

The main cause of mitral valve stenosis is an infection called rheumatic fever, which is related to strep infections. Rheumatic fever — now rare in the United States, but still common in developing countries — can scar the mitral valve. Left untreated, mitral valve stenosis can lead to serious heart complications.

#### How do you find the regurgitant fraction?

The regurgitant fraction was calculated by dividing the regurgitant volume by the sum of the regurgitant volume and aortic stroke volume measured by Doppler echocardiography.

#### What is AR in heart disease?

Aortic regurgitation (AR), also known as aortic insufficiency, is the reverse blood flow from the aorta into the left ventricle (LV) during diastole. AR can result from either valve leaflets or primary aortic root disease.