Pulmonary Function after Weight Loss in Obese Women Undergoing Roux-en-Y Gastric Bypass: One-Year Followup

Table 2

Values of lung volumes (spirometry).

Variable	Preoperative	Postoperative (1 year)	%Δ	𝑃
VC (L)	3.10 ± 0.65	3.21 ± 0.62	3.55	0.0356
% VC	92.29 ± 10.47	95.42 ± 12.44	3.39	0.0796
VT (L)	0.69 ± 0.28	0.70 ± 0.29	1.45	0.4357
IRV (L)	1.86 ± 0.39	1.48 ± 0.46	−20.43	<0.0001
ERV (L)	0.54 ± 0.33	1.02 ± 0.49	88.89	<0.0001
IC (L)	2.54 ± 0.45	2.17 ± 0.45	−14.57	<0.0001
FVC (L)	3.10 ± 0.70	3.33 ± 0.56	7.42	0.0009
% FVC	92.01 ± 13.07	98.88 ± 10.71	7.47	0.003
FEV1 (L)	2.49 ± 0.59	2.74 ± 0.48	10.04	<0.0001
% FEV1	88.79 ± 12.43	98.13 ± 10.58	10.52	0.0004
MVV (L)	101.59 ± 19.68	108.62 ± 14.25	6.92	0.0078
% MVV	86.50 ± 16.02	94.79 ± 22.22	9.58	0.0026

CV: vital capacity; VT: tidal volume; IRV: inspiratory reserve volume; ERV: expiratory reserve volume; IC: inspiratory capacity; FVC: forced vital capacity; FEV₁: forced expiratory volume in one second; MVV: maximum voluntary ventilation.