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Japanese

A Study on the Threshold in Sensation of Pain : Alleviation of Chlorpromazin Shoichi Sadakata 1 1Department of Surgery, Faculty of Medicine, Tohoku University pp.629-634
Published Date 1957/10/1
DOI https://doi.org/10.11477/mf.1406200610
  • Abstract
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Chlorpromazin used clinically alleviation of the pain was studied from two aspects: 1) the influence of the pain threshold and 2) the pain reducing effect.

In the former the Hardy-Wolff-Goodell dolorimeter and self-made coild spring esthe-siometer were used to measure the pain threshold and its alternation which was acieved by the intramusc lar injectiou of Chlorpromazine (1mg/kg) was investigated for two hours.

The result, which was measured in ten subjects, showed that perception and reaction threshold generally inclined to descend, and the threshold at 30 and 60 minutes was lowest, then it returned gradually to the normal threshold.

On the other hand, the deep pain threshold was in the normal range.

Hewer and Keele's method was applied for the study of the pain reducing effect. The power of analgesics to relieve pain experi-mentally induced by the contraction of is-chemic muscle were tested by this method, therefore it would be lain somewhere between the usual threshold studies and clinical obser-vation on the effectiveness of analgesics.


Copyright © 1957, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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