Pulmonary function tests, arterial blood gas analysis and systolic pulmonary arterial pressure (sPAP) data of the study population

FEV1 % pred75.76±20.60
FVC % pred72.92±19.95
FEV1/FVC %82.90±9.73
DLCO % pred42.35±17.38
TLC % pred66.43±16.80
RV % pred64.18±22.08
PaO2 mmHg68.28±11.31
PA–aO2 mmHg36.66±19.39
sPAP mmHg41.92±19.69
Pulmonary hypertension yes/no40/28
LV ejection fraction %62.02±9.44
LVDD mm36.23±7.89
LVSD mm32.80±7.83
RV basal diameter mm36.57±6.45
6MWD m335.41±159.26

Data are presented as mean±sd, unless otherwise stated. FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity; DLCO: diffusing capacity of the lung for carbon monoxide; TLC: total lung capacity; RV: residual volume; PaO2: arterial oxygen tension; PA–aO2: aveolar–arterial oxygen tension gradient; LV: left ventricular; DD: end-diastolic dimension; SD: end-systolic dimension; RV: right ventricular; 6MWD: 6-min walking distance.