著者

唐川 正典 胡田 光信 依藤 進 井口 松三

出版者

THE JAPANESE CIRCULATION SOCIETY

雑誌

日本循環器學誌 (ISSN:00471828)

巻号頁・発行日

vol.19, no.7, pp.321-325, 1955-10-20 (Released:2008-04-14)

参考文献数

8

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The authors at first made formula from which assumed normal cardiac size could be calculated in reference to body-weight and length. Actual cardiac size/assumed normal cardiac size was called dilatation-gradient : actual cardiac size was measured by planimeter in its shadow in the direct postero-anterior projection of X-ray. Relatiohship between circulation time and dilatation-gradient was investigated in cases of congestive heart failure and non-congestive cardiac disease, and linear relationship was demonstrated between them. This does not mean that prolongation of real circulation time (decrease of blood velocity) is due to dilatation of heart. Because circulation-time, clinically used, shows not only the blood velocity but also the degree how much the drug injected is diluted by blood.

著者

依藤 進

出版者

社団法人日本循環器学会

雑誌

日本循環器學誌 (ISSN:00471828)

巻号頁・発行日

vol.22, no.6, pp.393-396, 1958-09-20

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The author reported the value of stroke-volume and momentum of cardiac ejection of normal subjects obtained by ballistocardiogram, and at the same time these methods of measurement were critically examined. As ballistocardiogram showes, as previously reported, the impulse wave of circulation which is mediated by human body, the values obtained by it inevitably contain some degree of inexactness. In quantitative investigation by ballistocardiogram if we want to get the minimum error of it, it is better to use the value of momentum of cardiac ejection, where survey of the relation of it to other physiologic functions is sacrificed. In order to supplement this weak point, one needs deducing stroke-volume from ballistocardiogram, though its value is not so exact. In the latter it is advisable to investigate the relative changes in same subject.