Abnormal papillary muscle morphology

What it means

Any structural anomaly of the papillary muscles of the left ventricle.

There are normally two papillary muscles. The antero-lateral papillary muscle is located in the apical third of the ventricular wall, and the postero-medial papillary muscle is located in the middle third of the ventricular wall. The antero-lateral papillary muscle is usually composed of one body or head, and the postero-medial papillary muscle usually with two bodies or heads. Each papillary muscle provides chordae to both leaflets of the mitral valve, with one of the major functions of the papillary muscles being to prevents prolapse of anterior and posterior cusps of mitral valve during systole.

Part of the broader category

Also called: Morphological abnormality of the papillary muscles