Table 1

Descriptive physiology before and after lung volume reduction surgery (LVRS)

Before LVRS (16M/5F) 3 months after LVRS
FVC=forced vital capacity; FEV1=forced expiratory volume in 1 second; RV=residual volume; TLC=total lung capacity; FRC=functional residual capacity; Tlco=carbon monoxide transfer factor.
*p<0.0001 v preoperative value.
Age (years) 62.3 (7.7)
FVC (l) 2.7 (0.7) 3.3 (0.7)*
FEV1 (l) 0.8 (0.2) 1.1 (0.8)*
RV (l) 5.2 (0.9) 3.5 (0.7)*
TLC (l) 8.2 (1.2) 7.0 (1.1)*
FRC (l) 6.3 (1.0) 4.8 (0.8)*
Tlco (mmol/min/kPa) 3.3 (1.8) 3.2 (1.1)
Cardiopulmonary exercise test (Watts) 26.2 (22.8) 44.4 (27.1)*