valve leaflet

In the heart, a commissure is the area where two valve leaflets have abnormally come together.

Through a catheter inserted in the groin, the valve leaflets are clipped together.

As in the normal human heart, there exists two mitral valve leaflets, each with their own set of chordae.

The valve leaflets may thicken over time through calcification, making the whole apparatus stiff and less flexible.

The valve leaflets, however, are to a varying degree, attached to the walls and septum of the right ventricle.

The chordae tendinae keep the valve leaflets in the right position so that they can close properly during systole.

The chordae tendineae are also present and connect the valve leaflets to the papillary muscles.

It can also show decreased opening of the mitral valve leaflets, and increased blood flow velocity during diastole.

The pericardial sac is particularly well suited for a valve leaflet due to its extremely durable physical properties.

Severe mitral regurgitation usually results from a tear in one of the valve leaflets or the subvalvular apparatus.

Formation of two valve leaflets in the aortic valve instead of three leaflets.

This is important as should thrombi form on the heart valve leaflets and become seeded with bacteria, so called "bacterial vegetations" will form.

Because the papillary muscles, chordae, and valve leaflets are usually normal in such conditions, it is also called functional mitral insufficiency.

The mitral annulus is a ring that is attached to the mitral valve leaflets.

The procedure involves inserting a balloon expandable wire mesh valve with internal valve leaflets.

The mitral valve leaflets are clipped together with the device instead of being sutured together, making this procedure much less invasive but still effective.

This is due to the increased flow of blood through the pulmonic valve rather than any structural abnormality of the valve leaflets.

Another mechanism is that the dissection may extend into the aortic root and detach the aortic valve leaflets.

Prolapse occurs when the mitral valve leaflets are displaced more than 2 mm above the mitral annulus high points.

Usually, intracardiac repair involves closing the holes in the septum and the creation of two new atrioventricular valves from the underdeveloped common valve leaflet.

The open MitraClip grabs both mitral valve leaflets, the surgeon closes the clip, and the leaflets are clipped together.

The supramitral ring is a connective tissue ring at the base of the atrial surfaces of the mitral valve leaflets.

There is no histologic evidence of an annular structure anteriorly, where the mitral valve leaflet is contiguous with the posterior aortic root.

Uncommon causes of mitral stenosis are calcification of the mitral valve leaflets, and as a form of congenital heart disease.

Fibrosis and scarring of valve leaflets, commissures and cusps leads to abnormalities that can result in valve stenosis or regurgitation.