二尖瓣脱垂(MVP)是指二尖瓣叶在收缩晚期或企收缩期脱垂入左房所引起的临床后果,可伴或不伴有二尖瓣关闭不全。其临床特点主要是:①少数病人无症状;多数病人可表现为不典型的心前区痛,心悸、气短、乏力、头昏、神经过敏、眩晕甚或晕厥 Mitral valve prolapse (MVP) refers to the clinical consequences of mitral valve prolapse or prolapse of the mitral valve prolapse into the left atrium at late stage of contraction, with or without mitral regurgitation. The main clinical features are: ① a small number of patients asymptomatic; most patients can be manifested as atypical precordial pain, palpitations, shortness of breath, fatigue, dizziness, nervousness, dizziness or syncope