title: Intra-operative rewarming with Hot Dog(®) resistive heating and forced-air heating: a trial of lower-body warming.
abstract: Resistive heating is an alternative to forced-air warming which is currently the most commonly used intra-operative warming system. We therefore tested the hypothesis that rewarming rates are similar with Hot Dog(®) (Augustine Biomedical) resistive and Bair Hugger(®) (Arizant) forced-air heating systems. We evaluated 28 patients having major maxillary tumour surgery. During the establishment of invasive monitoring, patients became hypothermic, dropping their core temperature to about 35 °C. They were then randomly assigned to rewarming with lower-body resistive (n = 14) or forced-air (n = 14) heating, with each system set to 'high'. Our primary outcome was the rewarming rate during active heating over a core temperature range from 35 to 37 °C. Morphometric characteristics were comparable in both groups. Temperature increased at twice the rate in patients assigned to forced-air warming, with an estimated mean (SE) slope of 0.49 (0.03) °C.h(-1) vs 0.24 (0.02) °C.h(-1) (p < 0.001). Resistive heating warmed at half the rate of forced air.
authors.affiliation: Department of Anaesthesiology, General Intensive Care, and Pain Medicine, Medical University of Vienna, Vienna, Austria.
authors.forename: G
authors.initials: G
authors.lastname: Röder
authors.forename: D I
authors.initials: DI
authors.lastname: Sessler
authors.forename: G
authors.initials: G
authors.lastname: Roth
authors.forename: C
authors.initials: C
authors.lastname: Schopper
authors.forename: E J
authors.initials: EJ
authors.lastname: Mascha
authors.forename: O
authors.initials: O
authors.lastname: Plattner
mesh_terms: D000328:Adult; D000368:Aged; D001831:Body Temperature / Q000502:physiology; D005260:Female; D006801:Humans; D007035:Hypothermia / Q000503:physiopathology / Q000628:therapy; D007430:Intraoperative Care / Q000379:methods*; D008297:Male; D008441:Maxillary Neoplasms / Q000601:surgery; D008875:Middle Aged; D017694:Rewarming / Q000295:instrumentation / Q000379:methods*; D013997:Time Factors