An oesophageal thermal tube for rewarming in hypothermia.
Five dogs were cooled externally with ice-bags to rectal temperatures of 21.8-24.8 degrees C. Rewarming was performed with a specially constructed double-lumen oesophageal tube with circulating water at 42 degrees C. With this device, rewarming of the dogs to 30 degrees C took place in 60-102 min (mean 82 min). Up to a temperature of 31 degrees C (the "cardiac safety temperature"), the rise in blood temperature was 4.5 degrees C/h +/- 0.79 (s.d.). Calculation of a "rewarming efficiency index" showed an inverse relationship between surface area and temperature rise per hour. The efficiency of this rewarming method is comparable to that of peritoneal dialysis. No after-drop in temperature was observed and there were no other complications during these experiments. Rewarming with an oesophageal thermal tube is very simple and safe to use.
D000818:Animals; D001145:Arrhythmias, Cardiac / Q000503:physiopathology; D001831:Body Temperature; D004285:Dogs; D004562:Electrocardiography; D004573:Electrolytes / Q000097:blood; D004947:Esophagus; D005260:Female; D006439:Hemodynamics; D006358:Hot Temperature / Q000627:therapeutic use*; D007035:Hypothermia / Q000503:physiopathology / Q000628:therapy*; D007440:Intubation / Q000295:instrumentation*; D008297:Male; D013997:Time Factors
D004573:Electrolytes