Abstract

瓣膜性心脏病是心血管外科三大常见疾病之一。心脏瓣膜手术在美国大概占到所有心血管外科手术20%[1],在欧洲国家则达到29.8%[2],2010年全球约施行40万例瓣膜手术,我国也以每年10%~15%的速度递增[3-4]。英国、美国和欧洲等西方国家报道,心脏瓣膜手术近期病死率为4%~8%,约为冠状动脉旁路移植术(coronary artery graft bypass, CABG)的2倍[5-9]。为适应较高手术量、手术病死率、医疗支出的形势,心血管外科工作者一直在思考如何建立合适的心脏瓣膜手术风险预测模型,既帮助评估心脏瓣膜手术风险及病死率,又可帮助临床抉择与合理分配医疗资源[10]。

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