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The Annals of Thoracic Surgery, Vol 21, 151-157, Copyright © 1976 by The Society of Thoracic Surgeons

ARTICLES

Hypothermia and rewarming by peritoneal dialysis and temperature- controlled inhalate

DR Sperling and AV Beran

In 12 rabbits hypothermia and rewarming were induced with temperature- controlled circulating peritoneal dialysis in combination with temperature-controlled hypoxic and hypercapnic gas mixtures. The average cooling time necessary for the esophageal temperature to decrease from 37.7 degrees +/- 0.7 to 20.6 degrees +/- 1.0 degrees C was 81 +/- 34 minutes with a range of 41 to 150 minutes. The average warming time for esophageal temperature to increase from 20.6 degrees +/- 1.0 degrees C to 35.2 degrees +/- 1.8 degrees C was 90 +/- 35 minutes. Time of cooling was related to the proportions of inspired carbon dioxide and oxygen. In contrast to surface and bypass methods, esophageal and muscular temperatures agreed very closely, suggesting an absence of regional temperature gradients.