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本文对50例冠心病患者进行核听诊器、收缩时间间期(STI)及心阻抗法测定左心功能,并以20例健康人的检测结果确定观察指标及其各项检测的相关性。结果提示:①核听诊器与心阻抗法测定心排血量二者相关性良好(r=0.48,P<0.05),核听诊器与STI也有一定相关性(r=0.43,P<0.05)。②50例冠心病患者,STI异常者15例占30％;心阻抗法异常者39例占78％;核听诊器异常者49例占98％。临床心功能Ⅱ级以上者,核听诊器异常者100％,而STI仅29.4％。由此可见三种测量方法中以核听诊器最敏感,同时可作为早期心表的客观指标之一,STI测定在临床上评价左心功能会受到一定程度的限制。③冠心病患者可能左心舒张功能受损的出现早于收缩功能受损。
In this paper, 50 patients with coronary heart disease by nuclear stethoscope, systolic time interval (STI) and cardiac impedance determination of left ventricular function, and 20 healthy people test results to determine the indicators and their correlations. The results suggest that: (1) There is a good correlation between nuclear stethoscope and cardiac impedance (r = 0.48, P <0.05), nuclear stethoscope and STI (r = 0.43, P <0.05). ② Fifty patients with coronary heart disease, STI abnormalities in 15 cases accounted for 30%; heart impedance abnormalities in 39 cases accounted for 78%; nuclear stethoscope abnormal 49 cases accounted for 98%. Patients with Grade II or above clinical cardiac function had a nuclear stethoscope with an abnormality of 100%, while STI was only 29.4%. Thus it can be seen that the three kinds of measurement methods are the most sensitive to the nuclear stethoscope and can be used as an objective index of the early cardiogram. The STI measurement can be used to evaluate the left ventricular function in clinic to a certain extent. ③ patients with left ventricular diastolic dysfunction may appear earlier than the impaired systolic function.