Mitral Valve Prolapse
During ventricular systole, when pressure in the left ventricle rises, the flaps of the mitral valve normally remain closed and stay within the atrioventricular junction. In MVP on or both flaps bulge backward into the left atrium.
MVP can be a hereditary collagen tissue disorder, although the cause is unknown. MVP is the most common form of valvular heart disease.
MVP severity ranges from having a murmur to chordae tendineae rupture with mitral regurgitation.
A murmur is the first diagnostic step. A normal ECG is usually seen with MVP, although inverted (downward) T waves (indicating ischemia) may be seen.
A healthy lifestyle, including a good diet, exercise, stress management, and avoidance of stimulants and caffeine, can be important to prevent symptoms.