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二尖瓣狭窄(下称二狭)是引起心尖部舒张期杂音(DM)的主要病因。二狭多由风湿性心脏瓣膜病所致,亦可见于其它心脏病。这种杂音可以是器质性的,也可以是功能性的。由于产生这种杂音的基本病理生理改
Mitral stenosis (hereinafter referred to as two narrow) is the main cause of apical diastolic murmur (DM). Two narrow mostly caused by rheumatic heart valve disease, can also be found in other heart disease. This noise can be organic, it can be functional. Due to the basic pathophysiology of this murmur