二尖瓣脱垂综合征是由于二尖瓣及腱索病变以致于收缩期瓣叶向左房脱垂,多数具有收缩中、晚期喀喇音和/或收缩期杂音,伴有心电图改变。过去长期认为收缩中、晚期喀喇音是与心脏无关的所谓“心外音”,而收缩晚期杂音则是“良性”的。现已证实,收缩中、晚期喀喇音和收缩晚期杂音均来源于二尖瓣,伴有二尖瓣脱垂和心电图异常。1963年Barlow将其归结为一特殊综合征(收缩期喀喇音-杂音综合征,喀喇音-杂音二尖瓣脱垂综合征,二尖瓣脱垂综合征,Barlow综合征等)。本病的名称有19个之多,近年来许多人主张采用“二尖瓣脱垂综合征”或“二尖瓣脱垂”一名。发病率和临床意义许多报告说明二尖瓣脱垂并不罕见。非喷射性喀喇音和/或收缩晚期杂音,在 Mitral valve prolapse syndrome is due to mitral and chordae tendinopathy so that systolic mitral valve prolapse to the left atrium, the majority of contractions, late Kara and / or systolic murmur, associated with ECG changes. In the past, it was thought for a long time that during contraction, the late Kara-tone was a so-called “heart sound” that had nothing to do with the heart, whereas the contraction of late-stage murmurs was “benign.” Has been confirmed that the contraction, the late Kara-tone and contracting late murmur are derived from the mitral valve, associated with mitral valve prolapse and ECG abnormalities. Barlow in 1963 boils down to a special syndrome (systolic click sound - murmur syndrome, Kara - murmur mitral valve prolapse syndrome, mitral valve prolapse syndrome, Barlow syndrome, etc.). The name of the disease as many as 19 in recent years, many people advocate the use of “mitral valve prolapse syndrome” or “mitral valve prolapse” a. Incidence and clinical significance Many reports of mitral valve prolapse are not uncommon. Non-jetty clicks and / or contractions of late murmurs, at