n :  a valvular heart disorder in which one or both mitral valve flaps close incompletely during systole usu. producing either a click or murmur and sometimes minor mitral regurgitation and which is often a benign symptomless condition but may be marked by varied symptoms (as chest pain, fatigue, dizziness, dyspnea, or palpitations) leading in some cases to endocarditis or ventricular tachycardia - abbr. MVP - called also Barlow's syndrome  .
 
 
 
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