Table 4.
The variables associated with decrease in postoperative lung volumes (in % of the preoperative value), (n = 107). Univariate analyses.
| Independent variables | Dependent variables | ||
|---|---|---|---|
| VC | FEV1 | IC | |
| B (95% CI) | B (95% CI) | B (95% CI) | |
| Male versus female | — | — | 7.24 (−0.25, 14.7)† |
| Diabetes | — | −9.22 (−18.2, −0.21)∗ | — |
| Airflow obstruction | −9.72 (−19.9, 0.51)† | ||
| Smoker versus no smoker | — | — | −15.5 (−26.8, −4.20)∗ |
| Postoperative weight gain (hyperhydration), kg | — | −1.16 (−2.41, 0.09)† | — |
| ICU time/4 h | — | 0.73 (0.54, 1.00)∗ | — |
VC: vital capacity, FEV1: forced expiratory volume in 1 second, IC: inspiratory capacity, airflow obstruction: defined as FEV1/VC or FVC < 70% or asthma, smoking (current smoker, smoker versus no smoker or nerver smoked), postoperative weight gain: relation between pre- and second postoperative day, ICU: intensive care unit. ∗ P < 0.05, † P = 0.05–0.10, B: regression coefficient, CI: confidence interval.