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本文采用心阻抗图测定了76例4岁～12岁心肌炎患儿的左室功能,并以54名同龄健康小儿作对照,以PEP、LVETI、PEP/LVET、Q-Z、SV、CO、CI、HI作为观察指标,有1项以上异常者共55人,占72.4%,各项指标中,PEP/LVET、PEP、Q-Z较LVETL、SV、CO、CI和HI敏感。若以PEP/LVET>0.35作为衡量心功能异常的主要指标,则慢性期心功能异常发生率最高(81.0%),其次为急性期(36.7%),而迁延期患儿PEP/LVET比值均在正常范围。重型患儿心功能均异常,且PEP/LVET>0.40,而心功能正常的患儿病情均较轻。这一检查方法在协助诊断、判断病情、估计预后及观察疗效等方面均有一定价值。
In this paper, we measured the left ventricular function in 76 children with 4 ~ 12 years old myocarditis by cardiac impedance graph and compared them with 54 healthy children of the same age as controls. The PEP, LVETI, PEP / LVET, QZ, SV, CO, CI, HI As indicators of observation, there were 55 persons with more than one abnormality, accounting for 72.4%. Among the indexes, PEP / LVET, PEP, QZ were more sensitive than LVETL, SV, CO, CI and HI. If PEP / LVET> 0.35 was used as a measure of cardiac dysfunction, the incidence of abnormal cardiac function in chronic phase was the highest (81.0%), followed by acute phase (36.7%), while the PEP / LVET ratio in postponed children was normal range. Severe children with abnormal cardiac function, and PEP / LVET> 0.40, and normal heart function in children with mild disease. This method of examination has some value in assisting diagnosis, judging the condition, estimating the prognosis and observing the curative effect.