论文部分内容阅读
二尖瓣脱垂病人常有的胸痛、呼吸困难、疲乏、心悸、昏厥等症状的原因未明。有的学者认为心肌缺血可能是一些病人心前区疼痛的原因。产生心肌缺血的机理有几个假设,Rarlow等认为可能是扩张的后瓣压迫冠状动脉回旋支所致,但冠状动脉造影未能证实。有认为是瓣叶外翻使乳头肌应力增高引起乳头肌局部缺血,乳头肌氧供求发生矛盾。Chesler等观察
Pelvic prolapse patients often chest pain, difficulty breathing, fatigue, heart palpitations, fainting and other symptoms of unknown reasons. Some scholars believe that myocardial ischemia may be the cause of some patients with precordial pain. There are several hypotheses about the mechanism by which myocardial ischemia occurs. Rarlow et al. Suggest that the dilation of the posterior valve may result from compression of the coronary circumflex artery, but coronary angiography has failed to confirm. There is that the valve leaflet valgus so papillary muscle stress caused by papillary muscle ischemia, papillary muscle oxygen supply and demand contradictions. Chesler and other observations