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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)及心阻抗图测定左心功能;并以20例健康人作对照。结果显示:(1)核听诊器与心阻抗图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)。(2)50例冠心病患者,STI 异常者15例,占30%;心阻抗图异常者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%。三种测定方法中以核听诊器最敏感,且可作为判断早期心衰的客观指标之一。(3)冠心病患者左心舒张功能受损可能早于收缩功能受损。
In this paper, 50 patients with coronary heart disease by nuclear stethoscope, systolic time interval (STI) and cardiac impedance map determination of left ventricular function; and 20 healthy controls. The results showed that: (1) There was a good correlation between nuclear stethoscope and cardioresistance (r = 0.48, p <0.05), nuclear stethoscope and STI (r = 0.43, p <0.05). (2) In 50 cases of coronary heart disease, 15 cases were abnormal STI, accounting for 30%; 39 cases were abnormal cardiac impedance diagram, accounting for 78%; 49 cases were abnormal nuclear stethoscope, accounting 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%. Among the three methods, nuclear stethoscope is the most sensitive and can be used as one of the objective indexes to judge early heart failure. (3) Left ventricular diastolic dysfunction in patients with coronary heart disease may be earlier than impaired systolic function.