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测定768例急性心肌梗塞（AMI）患者入院后血尿素氮（BUN）水平．结果表明，在AMI患者中BUN水平增高者占33．8%、该组患者与BUN正常组比较，年龄较大．入院时血压较低，梗塞面积较大·心律失常、心衰和心源性休克并发症较多，住院期间的病死率较高（21．8％对9．0％，P＜0．01）多因素逐步回归分析发现BUN是预测AMI患者住院死亡的重要指标之一。
Serum urea nitrogen (BUN) levels were measured in 768 patients with acute myocardial infarction (AMI). The results showed that in patients with AMI increased levels of BUN accounted for 33.8%, the group of patients with normal BUN group, older. Low blood pressure and large infarct size at admission • Arrhythmia, more heart failure and cardiogenic complications and higher mortality during hospitalization (21.8% vs 9.0%, P <0.01) Multi-factor regression analysis showed that BUN was one of the most important predictors of in-hospital mortality in patients with AMI.