Association Between Emphysema Score, Six-Minute Walk and Cardiopulmonary Exercise Tests in COPD

Table 1.: Characteristics of COPD Patients

Sex, M/F	17/0
Age, yr	73.5 ± 5.7 (61-79)
BMI	22.3± .5 (16.8 – 30.5)
Smoker/ever-smoker/Nonsmoker	5/12/0
GOLD Stage (I/II/III/IV)	1/6/6/4
FVC, L	1.7 ± 0.1
FVC, % predicted	54.5 ± 13.2
FEV1, L	0.9 ± 0.1
FEV1, % predicted	43.1 ± 16.2
FEV1/FVC	52.6 ± 9.9
BODE Index	4.1 ± 1.6 (0-7)
6MWT
Distance, m	380.6 ± 51.9 (272-468)
Baseline dyspnea Borg score	1 (0-3)
Post-exercise Dyspnea Borg Score	4.9 (3-8)
Baseline IC, L	1.15 ± 0.37
Post-exercise IC, L	1.16 ± 0.35
SaO₂	95.4 ± 1.6
HRCT Emphysema Score	17.1 ± 14.9 (2-51)
0-10	8
11-20	4
21-30	3
> 30	2
CPET
AT (Aerobic Threshold), ml/kg/min	4.6 ± 1.9
AT VO₂, ml/min	621.1 ± 120.0
AT VCO₂, ml/min	595.1 ± 110.0
VO₂max, ml/min	757.1 ± 168.8

Abbreviations: GOLD: Global initiative for lung disease; FVC: forced vital capacity; FEV1: Forced expiratory volume in 1 sec; L: liter; SaO₂: Saturation of oxygen; BODE: the body-mass index (B), the degree of airflow obstruction (O) and functional dyspnea (D), and exercise capacity (E).