Grace J. Paik, Hiroko Henker, MD, Sheila Alexander, PhD, RN, FCCM, Susan M. Sereika PhD, Richard Henker PhD, CRNA, FAAN University of Pittsburgh School of Nursing Department of Anesthesia 3500 Victoria St, Pittsburgh, PA 15213

Introduction: Cold operating room temperatures and the effects of anesthetic medications on thermoregulation put surgical patients at risk for decreased core body temperature. Considering the significant complications associated with perioperative hypothermia, it is important for anesthesia providers to avoid these risks. The purpose of this study was to identify factors associated with changes in core body temperature during surgery. Methods: A prospective repeated measures design was used in a convenience sample of subjects =18 years old undergoing a surgical procedure with planned esophageal temperature monitoring and administration of general anesthesia. Esophageal temperatures were recorded on patients at induction and at emergence using the Model ES400-18 (Smiths Medical., Rockland MA). All patients were warmed with upper or lower body convective warming. Multiple linear regression was used to identify surgical and clinical factors associated with temperature change during surgery. Results: The sample (N=54) was mostly Caucasian (n=45, 83%) and 50% (n=27) male with a mean age of 50.2 (SD=15.9). Surgical procedures lasted an average of 116 minutes (SD=78.4). Esophageal temperature averages increased from 36.06oC (SD=0.62oC) during induction of anesthesia to 36.53oC (SD=0.67oC) on emergence from anesthesia. Multiple regression analysis indicated that duration of surgery (mins) was associated with a greater increase in core body temperature (b=-0.00456, p=0.004). There was a trend for neck surgeries to be associated with an increase in core body temperature (b=-0.734, p=0.059). Conclusions: Despite receiving general anesthesia, core body temperature increased in subjects after induction, most likely due to intraoperative convective warming. Of interest is the low core body temperature (< 37 oC) during induction. Preoperative warming measures immediately prior to surgery could help prevent low core body temperature.

Additional Abstract Information

Presenter: Grace Paik

Institution: University of Pittsburgh School of Nursing

Type: Oral

Subject: Nursing

Status: Approved

Time and Location

Session: Oral 6
Date/Time: Fri 10:05am-10:25am
Location: Old North 211
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