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鉴于有关研究提示存在二尖瓣脱垂病人复发脑缺血事件的机率增加,作者以美国明尼苏达州Olm-sted市社区人群为基础,探讨了经超声心动诊断为二尖瓣脱垂病人首次缺血性卒中或TIA后复发卒中的危险性。 研究对象为1975～1990年间的Olmsted市居住的49例曾患缺血性卒中或TIA的二尖瓣脱垂病人。采用两种比较方法调查了这些病人复发卒中的危险率是否有别于预期复发率,即分别将首次缺血性卒中或TIA后复发卒中的比率与1975～1984年间Rochester市以人群为基础,并经年龄和性别校正后的首次缺血性卒中后的复发率进行比较;同时与
In view of the increased probability of recurrent cerebral ischemic events in patients presenting with mitral valve prolapse in the study, the authors, based on the community population of Olm-sted, Minnesota, USA, explored the first ischemic episodes of mitral valve prolapse diagnosed by echocardiography Risk of recurrent stroke after stroke or TIA. The subjects were 49 patients with mitral valve prolapse who had ischemic stroke or TIA who lived in Olmsted, 1975-1990. Two comparative methods were used to investigate whether the risk of recurrent stroke in these patients was different from the expected recurrence rate, namely, the proportion of first-episode ischemic stroke or recurrent post-TIA stroke was based on the population in Rochester between 1975 and 1984 The relapse rates after first ischemic stroke after age and gender correction were compared; meanwhile