Jan 18, 2012 · The MV consists of the anterior and posterior leaflets, the annulus and the subvalvular apparatus of the papillary muscles and chordae tendinae. The function of MV depends on these structures, but also the global left ventricular (LV) structure and contractility.

Systolic anterior motion (SAM) of the mitral valve or chordate is one characteristic seen in hypertrophic cardiomyopathy (HCM) either in obstructive or non-obstructive phenotypes. More often than not, the obstruction is caused by valvular rather than chordal SAM.

Jan 16, 2018 · A lot of SAM we see isn’t clinically significant (ie, chordal SAM), and there are various levels of severity. 3D TEE of the aortic valve apparatus (LVOT – valve – ascending aorta) cropped down to the level of outflow can sometimes show the …

The mitral valve apparatus is a complex three–dimensional functional unit that is critical to unidirectional heart pump function. The main mitral valve apparatus components are 1) mitral annulus, 2) mitral valve leaflets, 3) chordae tendineae and 4) papillary muscles.

Feb 15, 1995 · The mitral apparatus is viewed from above. In hypertrophic cardiomyopathy with systolic anterior motion (right), the papillary muscle tips are displaced toward one another. This geometry can be predicted to produce relative chordal slack in the central leaflet portions.

A transthoracic echocardiogram showed moderate mitral regurgitation (MR) with thickened leaflets and an echodensity in the submitral apparatus suspicious for torn chordae tendineae versus ruptured papillary muscle (Figure 1).

Oct 19, 2012 · Chordae is the structure that supports the leaflets of the mitral valve much like a parachute. They’re attached in the ventricle. So the chordae which should be moving posteriorly and out of the way during systole – and systole is just the medical term for …

Aug 1, 1972 · This review deals with the functional anatomy of the six components of the mitral apparatus, namely, the left atrial wall, annulus, leaflets, chordae tendineae, papillary muscles, and left ventricular wall.

Thickened interventricular septum and abnormal chordal attachment to AML in presence of hypertrophied and hypercontractile ventricle results in SAM. Here, drag phenomenon is important role than venture.

In conclusion, chordal systolic anterior motion should be differentiated from leaflet systolic anterior motion after mitral annuloplasty because the former is a transient, benign, and relatively common finding.