Compared last 6 years with first 6 years,the ratios of MI,hypertension and diabetes,RHD,PHD,arrhythmia,cardiomyopathy and CC in the aged patients also have statistic significance.

• 后6年与前6年相比；老年患者病因中；病因比率明显升高的为心肌梗死、高血压、糖尿病、风心病、肺心病、心肌病；所占比例的差别均有显著性意义(P<0.；01)。