心房粗動の實驗的研究
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概要
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From the electrocardiographic analysis of the experimental flutter, induced by electrical stimulation with or without blocking the muscular bridge between the orifices of superior and inferior vena cavae and induced by aconitine injection, the following conclusions were obtained. 1) As advocated by Rosenbluth, auricular flutter is induced by electrical stimulation easily and certainly and persists, when the muscular bridge between the orifices of superior and inferior vena cavae is blocked. 2) In aconitine flutter excitation wave starts at an injected area and spreads over a whole auricular muscle. On the other hand, in the electrically induced flutter, excitation wave circulates around the orifices of superior and inferior vena cavae. Direction of circus movement has no specific relation to method of stimulation. 3) Flutter returns to sinus rhythm instantly, when the auricular muscle between the auriculo-ventricular border and the blocked area is opressed or cooled. It does not stop when only a stimulated area or neighborhood of taenia terminalis is opressed or cooled. Accordingly, circus pathway is not limitted to taenia terminalis. 4) Frequency of flutter wave decreases, when a blocked area is enlarged but not so much as expected. This indicates that the circus pathway is a zig-zag ring. 5) Therefore, the mechanism of electrically induced flutter is considered to differ from that of aconitine flutter. The former is circus movement but the latter ectopic impulse-formation.
- 社団法人日本循環器学会の論文
- 1954-12-20