【摘要】 目的　探讨陈旧性心肌梗死患者乳头肌功能障碍与二尖瓣返流之间的关系。方法　对 116例陈旧性心肌梗死患者及 3 0例正常人 ,用二维超声心动图及实时彩色血流成像技术 ,对比测量及研究左室乳头肌长度及功能。结果　陈旧性心肌梗死 (包括前壁、广泛前壁及下壁梗死或存在乳头肌梗死 )的患者与正常人前、后组乳头肌缩短率 (FS)及后组乳头肌收缩末长度 (Ls)比较有显著差异 (P <0 .0 1,P <0 .0 5 )。而与其它部位的陈旧性心肌梗死比较差异不明显 ,且无明显的病理性二尖瓣返流。结论　乳头肌功能障碍是由于乳头肌和 或邻近心肌缺血或梗死所致 ,且是导致二尖瓣返流的重要原因。更多还原

【Abstract】 Objective To investigate the relationship between papillary muscle dysfunction and mitral regurgitation in patient with obsolete myocardial infarction.Methods The length of the human left ventricular papillary muscles and contractility of 116 cases patients with obsolete myocardial infarction and 30 cases normal people examined by two-dimensional and Color-Doppler flow imaging were analyzed and compared.Results In the fractional shortening of both the anterior and posterior papillary muscles (FS) and the end-systolic lengths of the posterior papillary muscles (Ls), there was a significant difference between the normal and obsolete myocardial infarction (included anterior wall, wild-ranging anterior wall, inferior wall infarction or papillary muscles infarction) groups (P< 0.01 ,P<0.05), and there was no obvious difference compared with others, furthermore, there was no pathologic mitral regurgitation.Conclusion Papillary muscle dysfunction (PMD) is caused by papillary muscle and/or myocardial ischemia or infarction, and it is an important reason which leads to mitral regurgitation.更多还原