Table 3.
Multivariate logistic regression analysis for risk factors associated with postoperative hypoxaemia.
| Risk factors | Adjusted odds ratio (95%CI) | p |
|---|---|---|
| BMI (kg/m2) | ||
| 18.5–23.9 | 1.0 (reference) | |
| <18.5 | 1.718 (0.699–4.223) | 0.239 |
| 24.0–27.9 | 1.260 (0.565–5.279) | 0.437 |
| ≥28.0 | 1.501 (1.098–3.421) | 0.012* |
| Expectoration symptoms | 1.345 (1.127–2.908) | 0.001* |
| Preoperative hypoxaemia | 2.335 (1.442–3.815) | <0.001* |
| ASA classification | ||
| I | 1.0 (reference) | |
| II | 1.021 (0.655–1.991) | 0.079 |
| III | 1.434 (1.023–2.010) | 0.037* |
| Time between recovery from COVID-19 and surgery (weeks) | ||
| >4 | 1.0 (reference) | |
| 2–4 | 1.776 (0.472–1.977) | 0.218 |
| ≤2 | 1.695 (1.319–2.817) | 0.001* |
| Anesthetic mode | ||
| Intraspinal anesthesia | 1.0 (reference) | |
| General anesthesia | 2.516 (1.902–3.897) | 0.018* |
BMI, body mass index; ASA, American Society of Anesthesiologists; COVID-19, novel coronavirus disease 2019. *p < 0.05.