Table 2– Changes from baseline to 6 months later in pulmonary function, dynamic hyperinflation during exercise and work performed on cardiopulmonary exercise test
LVRSNon-LVRSp-value
Subjects166
ΔFEV1 L0.48 (0.16–0.68)-0.05 (-0.07–0.02)<0.001
ΔFEV1/FVC %5.0 (2.3–6.0)-2.5 (-3.3– -0.8)<0.001
ΔTLC % pred-7.5 (-18.0–3.3)-0.5 (-7.0–29.5)0.12
ΔRV % pred-35.0 (-72.8– -4.3)-6.5 (-22.8–24.5)0.1
ΔFRC/TLC %-10.0 (-15.9– -4.8)4.0 (-4.4–8.6)0.01
ΔEELV/TLC-0.09 (-0.12– -0.02)0.02 (-0.01–0.04)0.007
Δpower W10.0 (3.3–20.5)1.5 (-1.0–6.3)0.054
  • Data are expressed as n or median (interquartile range), unless otherwise stated. LVRS: lung volume reduction surgery; Δ: change; FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity; TLC: total lung capacity; % pred: % predicted; RV: residual volume; FRC: functional residual capacity; EELV: end-expiratory lung volume.