采用心导纳微分图对老年与老年前期健康人各60例的心脏功能进行分析.结果显示:老年组较老年前期组总外周阻力(TPR)增加及血管顺应性(C)减退明显(P<0.01);心肌收缩力减弱(P<0.05)、心搏出量减少(P<0.05).根据老年人心功能降低演变缓慢及临床表现不典型的特点,作者提出老年人量化六级心功能分级评分标准,采取计算积分及心功能级指数(CFGI)方法,为判断病情及估计预后提供客观指标. Cardiac function was analyzed using cardiac admittance differential graphs in 60 elderly patients with pre-senile and healthy controls.The results showed that the total peripheral resistance (TPR) and vascular compliance (C) decreased significantly in the elderly group compared with the pre-senile group (P < 0.01), myocardial contractility decreased (P <0.05), cardiac output decreased (P <0.05) .According to the slow evolution of cardiac function in the elderly and the clinical manifestations of atypical characteristics, the author proposed the elderly quantitative six-level cardiac function score Standard, take the calculation of integral and cardiac function level index (CFGI) method, to determine the condition and prognosis to provide objective indicators.