Lung Function before and Two Days after Open-Heart Surgery

Table 3

The variables associated with postoperative lung volumes (expressed as percent of predicted values), (𝑛=107). Multivariate analyses.

Independent variables	Dependent variables
	VC	FEV1	IC
	𝐵 (95% CI)	𝐵 (95% CI)	𝐵 (95% CI)
Male versus female	−5.35 (−10.7, 0.004)	—	−20.0 (−25.8, −14.2)^*
Age/10 years	3.17 (0.72, 5.62)^*	1.70 (−1.08, 4.49)	—
BMI weight (kg)/length m^2	—	−0.58 (−1.24, 0.74)	−0.86 (−1.51, −0.21)^*
CABG versus valve surgery	—	3.63 (−1.25, 8.16)	—
ICU time/4 h	—	−0.24 (−0.56, 0.08)	—
𝑅^2	0.07	0.09	0.33

VC: vital capacity, FEV₁: forced expiratory volume in 1 second, IC: inspiratory capacity, BMI: body mass index, type of surgery (CABG: coronary artery bypass grafting, valve: aorta, mitralis, or tricuspidalis valve surgery), ICU: intensive care unit. ^*𝑃<0.05, 𝐵: regression coefficient, CI: confidence interval, 𝑅²: adjusted 𝑅 square.