Movement Of Mitral Valve On M-Mode

The mitral valve leaflets demonstrating a classic W and M pattern during atrial systole. The anterior mitral valve leaflet moves in and M shipped the manner while the posterior mitral leaflet moves in a W shipped the manner. The initial opening of the mitral valve occurs during left ventricular diastole and leads to the formation of the E point. 

Following this, there is a deceleration in velocity leading to the E-F slope. This is normally greater than 60 mm/second. 

At baseline, both the mitral valve leaflets almost reach a point of closure that coincides with the F point. This is followed closely by contraction of the atrium resulting in the A point.

At the time when the F point occurs, the left atrium passively allows blood to enter it through the pulmonary veins. This is called the conduit phase.

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