Normothermic (n=252) Hypothermic (n=278) P Value OR [CI]*
Age (yrs) 6.4 ± 5.2 7.2 ± 5.6 0.064
Weight (kg) 27.8 ± 23.4 28.7 ± 22.7 0.065
Baseline (perioperative ) Temperature 36.27 ± 0.5 36.37 ± 0.54 0.043
ASA 1-2 ASA 3-4 210 (84%) 41 (16%) 218 (78%) 60 (22%) 0.15
Admission after surgery 201 (80%) 204 (73%) 0.084
Procedure type* Invasive Non-invasive 205 (81%) 47 (19%) 246 (89%) 32 (11%) 0.02 1.62 [1.1 – 2.5]
Temperature Monitoring Method Skin probe Core probe (bladder, esophageal or rectal) 115 (47%) 131 (53%) 158 (58%) 112 (42%) 0.008 1.26 [1.06 – 1.49]
*OR= Odds Ratio; CI= Confidence Interval; Presented for significant comparisons only Invasive procedures included those involving an incision; non-invasive included diagnostic (e.g. computerized axial tomography, radiography, or magnetic resonance imaging).
Table 2: Relationship between Patient and Perioperative Factors and Intraoperative Hypothermia.