Table 1.

Preoperative and postoperative testing [postoperative cardiopulmonary exercise testing was done 8 months after LVRS]

	Preoperative	3 months after first LVRS	2 months after second LVRS	5 months after second LVRS
FEV1/FVC	26.36	31.4	30	27
Pre BD FEV1 (l, % predicted)	0.54 l (17%)	0.91 l (29%)	1 l (40%)	0.95 l (31%)
Pre BD FVC (l, % predicted)	2.1 l (46%)	2.9 l (67%)	3.3 l (80%)	3.5 l (85%)
TLC (% predicted)	133%	84%	116%	96%
RV (% predicted)	289%	113%	190%	132%
DLCO (% predicted)	33%	40%	40%	43%
6-min walk distance (m)	119 m	325 m	341 m	345 m
Work rate	33 W			50 W*