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恒压式心导纳图是国际上的最新技术。1980年10月小笠原等人报道了利用恒压式心导纳图进行动物(狗)实验的结果,但仅限于动物实验,未见人体测量结果报道。使用恒流式阻抗图仪胸部电极间基础阻抗(Z_0)的影响,是一项重要的因素。1976年Ito(伊藤)等人认为用心导纳图方法测量SV,因公式中不存在基础阻抗或基础导纳,不必测量该值,故较阻抗图方法要好,以后陆续见有心导纳图测量的报道,但所使用的导纳图
Constant pressure cardiac admittance chart is the latest international technology. In October 1980, Ogasawara et al. Reported the results of animal experiments using a constant pressure cardiac admittance graph, but only in animal experiments. No human body measurement results were reported. The use of constant impedance impedance meter chest electrode base impedance (Z_0) of the impact is an important factor. 1976 Ito (Ito) and others that the heart admittance map method of measuring SV, because the formula does not exist in the basic impedance or basic admittance, do not have to measure the value, it is better than the impedance map method, after another, Reported, but the admittance map used