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Forced-Air Warming Provides Better Control of Body Temperature in Porcine Surgical Patients

1
College of Veterinary Medicine, The Ohio State University, Columbus, OH 43210, USA
2
Ethicon, Inc., Cincinnati, OH 45242, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Patrick Butaye
Vet. Sci. 2016, 3(3), 22; https://doi.org/10.3390/vetsci3030022
Received: 22 April 2016 / Revised: 17 August 2016 / Accepted: 7 September 2016 / Published: 9 September 2016
Background: Maintaining normothermia during porcine surgery is critical in ensuring subject welfare and recovery, reducing the risk of immune system compromise and surgical-site infection that can result from hypothermia. In humans, various methods of patient heating have been demonstrated to be useful, but less evaluation has been performed in techniques to prevent hypothermia perioperatively in pigs. Methods: We compared body temperature regulation during surgery before and after modification of the ambient temperature of the operating laboratories. Three different methods of heating were then compared; a standard circulating water mattress, a resistive fabric blanket, and a forced hot air system. The primary measure was percentage of temperature readings outside a specification range of 36.7–40.0 °C. Results: Tighter control of the ambient temperature while using a circulating water mattress reduced the occurrence of out-of-specification body temperature readings from 20.8% to 5.0%, with most of these the result of hypothermia. Use of a resistive fabric blanket further reduced out-of-specification readings to 1.5%, with a slight increase in the occurrence of hyperthermia. Use of a forced air system reduced out-of-specification readings to less 0.1%. Conclusions: Maintenance of normothermia perioperatively in pig can be improved by tightly controlling ambient temperatures. Use of a resistive blanket or a forced air system can lead to better control than a circulating water mattress, with the forced air system providing a faster response to temperature variations and less chance of hyperthermia. View Full-Text
Keywords: porcine; surgery; body temperature; hypothermia; resistive blanket; forced air heating porcine; surgery; body temperature; hypothermia; resistive blanket; forced air heating
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Dent, B.T.; Stevens, K.A.; Clymer, J.W. Forced-Air Warming Provides Better Control of Body Temperature in Porcine Surgical Patients. Vet. Sci. 2016, 3, 22.

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