Mitral Valve Prolapse

**Definition:** Abnormal protrusion or billowing of one or both of the leaflets of MITRAL VALVE into the LEFT ATRIUM during SYSTOLE. This allows the backflow of blood into left atrium leading to MITRAL VALVE INSUFFICIENCY; SYSTOLIC MURMURS; or CARDIAC ARRHYTHMIA.

**Tree numbers:** - C14.280.484.400.500

**Synonyms:** - Floppy Mitral Valve - Mitral Click-Murmur Syndrome - Click-Murmur Syndrome - Systolic Click-Murmur Syndrome - Prolapsed Mitral Valve - Mitral Valve Prolapse Syndrome