Comparative Electrocardiographical Studies on the Wave Form of QRS Complex in Vertebrates

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  • QRS群の波形に関する比較心電図学的研究
  • QRSグン ノ ハケイ ニ カンスル ヒカク シンデンズガクテキ ケンキュウ

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Abstract

Bipolar electrocardiograms along the longitudinal heart axis (A-B lead) were recorded on twenty species of vertebrates. The wave forms of the QRS complex indicating the activation process in the ventricles were compared among these species from a comparative electrocardiographical point of view. They were arranged phylogenically in the order of Rs→RS→rS or Rs (qRs) types. The shifting process in the wave forms of the QRS complex was the same as that observed ontogenically in the chick embryo and the rat foetus.

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