Table 2 Univariate Analysis of categorical and continuous predictors of core hypothermia
Variable | Hypotermic / non-hypothermic (n° or mean ± sd) | Odds ratio (95% CI) | p-value |
|---|---|---|---|
Age (years) | Â | Â | Â |
   < 65 | 44/35 | 1 |  |
   ≥ 65 | 63/43 | 0.9 (0.5–1.6) | 0.611 |
Gender | Â | Â | Â |
   Female | 39/34 | 1 |  |
   Male | 68/44 | 0.7 (0.4 – 1.4) | 0.327 |
Body weight (Kg) | 69.19 ± 16.79 / 68.49 ± 16.06 | 1,0 (1.0 – 1.0) | 0.771 |
Body mass index (Kg/m2) | 25.30 ± 5.77 / 25.58 ± 6.14 | 1,0 (0.9 – 1.0) | 0.750 |
Previous temperature in the ward (°C) | 36.28 ± 0.44 / 36.49 ± 0.54 | 0.4 (0.2 – 0.8) | 0.007 |
ASA Physical status | Â | Â | Â |
   I | 3/2 | 1 |  |
   II | 43/29 | 1.5 (0.2 – 11.2) | 0.693 |
   III | 52/38 | 1.5 (0.5 – 4.2) | 0.457 |
   IV | 9/9 | 1.4 (0.5 – 3.8) | 0.544 |
Emergency surgery | 18/11 | 0.8 (0.4 – 1.8) | 0.616 |
Magnitude of surgery | Â | Â | Â |
   Minor | 11/25 | 1 |  |
   Medium | 26/19 | 3.1 (1.2 – 7.8) | 0.016 |
   Major | 70/34 | 4.7 (2.1 – 10.6) | < 0.001 |
General anesthesia | 93/65 | 6,0 (1.9 – 18.8) | 0.002 |
Regional anesthesia | 4/15 | 1 | Â |
Combined anesthesia | 6/1 | 22.5 (2.1–244.8) | 0.011 |
Temperature monitoring | 19/3 | 0.2 (0.1–0.7) | 0.009 |
Warming technique | 55/26 | 0.5 (0.3 – 0.9) | 0.015 |
Intravenous crystalloids (L.) | 3.21 ± 1.75 / 2.37 ± 1.35 | 1.4 (1.2 – 1.8) | 0.001 |
Intravenous colloids (L.) | 0.08 ± 0.26 / 0.10 ± 0.26 | 0.7 (0.2 – 2.2) | 0.565 |
Packed erythrocytes (Units) | 0.92 ± 1.45 / 0.37 ± 0.81 | 1.6 (1.1 – 2.2) | 0.006 |
Fresh frozen plasma (Units) | 0.27 ± 0.81 / 0.19 ± 1.08 | 1.1 (0.8 – 1.6) | 0.575 |
Duration of anesthesia (min.) | Â | Â | Â |
   ≤ 180 min. | 46/45 | 1 |  |
   > 180 min. | 61/33 | 1.8 (1.0 – 3.3) | 0.049 |
Score of Acute Physiologic system (SAPS II) | 26.45 ± 14.95 / 21.51 ± 12.14 | 1.0 (1.0 – 1.1) | 0.020 |