Comparison of peri-operative core temperature in obese and non-obese patients*

Author(s)

Fernandes, L. A. ; Braz, L. G. ; Koga, F. A. ; Kakuda, C. M. ; Modolo, N. S. P. ; de Carvalho, L. R. ; Vianna, P. T. G. ; Braz, J. R. C.

• Document type: Journal article
• Source: ANAESTHESIA; v. 67, n. 12, p. 6-pg., 2012-12-01.

Abstract

Our aim was to compare peri-operative core temperatures and the incidence of hypothermia in obese and non-obese women with active forced-air warming. Twenty female patients scheduled for abdominal surgery were allocated to two groups according to body mass index. Ten obese (30.034.9 kg.m-2) and 10 non-obese (18.524.9 kg.m-2) women received forced-air warming on their lower limbs. At the end of surgery, the mean (SD) core temperatures were 36.7 (0.5) degrees C in the obese group and 36.0 (0.6)degrees C in the non-obese group (p < 0.001). Only in the non-obese group was there a significant decrease in the intra-operative core temperature values (p < 0.001). The incidences of intra-operative hypothermia were lower in the obese group (10%) compared with non-obese group (60%; p = 0.019). In the postoperative recovery phase, the mean (SD) core temperature data were higher in the obese group than in the non-obese group (36.2 (0.4) vs 35.6 (0.5)degrees C, respectively (p < 0.001)). In conclusion, obese female patients have higher peri-operative core temperature and a lower incidence of hypothermia compared with non-obese female patients during abdominal surgery with active forced-air warming. (AU)