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Article
September 1962

Hypothermia with Intrathoracic RewarmingUse in Open-Heart Surgery

Author Affiliations

NAGOYA, JAPAN

Arch Surg. 1962;85(3):371-376. doi:10.1001/archsurg.1962.01310030019003
Abstract

Introduction  For open-heart surgery, we have found advantages of hypothermia with intrathoracic rewarming technique, through animal experiments, which assured safety even for the operation of the animal with myocardial damages.2 It should be reasonable to keep the temperature of the thoracic region higher than that of the body surface under hypothermia, because, when the heart is cooled, the contracting force of the heart muscle becomes weakened with decreased cardiac output. If the temperature of the thoracic cavity is much lower than that of the body surface, it may be difficult to maintain proper circulation to the peripheral tissue at higher temperature. This is a difficult problem at the time of rewarming but can be protected by intrathoracic rewarming. This communication is to present the technique and clinical results of intrathoracic rewarming for open heart surgery.

Technique  Hypothermia was carried out with either immersion technique or blanket cooling. Ether was

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