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Article
March 5, 1949

Arztliche Rheokardiographie

JAMA. 1949;139(10):682. doi:10.1001/jama.1949.02900270066033

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Abstract

As the authors point out on page 7 the apparatus which they describe and utilize is similar to that independently presented by J. Nyboer in this country in 1940, as the Electrical Impedence Plethysmograph. After describing the principle and the details of the apparatus and procedure there is a theoretic development which goes far afield. This is followed by a typically Germanic elaborate detailing of the use of the instrument under various circumstances clinically. When the entire text is boiled down, it is found that the authors apparently have used this method almost exclusively to determine the isometric contraction period and the ejection time. The reviewer is left with a feeling that there is much ado about trivialities. The technic employed needs considerable implementation before it can be considered of value as an added tool for research or clinical analyses.

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