Median (IQR) | Median % predicted | |
---|---|---|
*All lung function measurements were performed after dual bronchodilation with inhaled nebulised salbutamol (2.5 mg) and ipratropium bromide (250 μg). | ||
FEV1, forced expiratory volume in 1 second; VC, vital capacity; RV, residual volume; TLC, total lung capacity (helium dilution); Kco, lung carbon monoxide transfer factor (mmol/min/kPa/l); UZ, upper zone scans; LZ, lower zone scans; Combined, average of upper and lower zone scans; Perc15, 15th percentile point; VI −950, voxel index at a threshold of −950 HU. | ||
Age | 51 (46–56) | N/A |
Pack years | 15 (0–28) | N/A |
FEV1 (l)* | 1.98 (1.5–2.4) | 48 |
VC (l)* | 4.0 (3.2–4.8) | 101 |
RV (l)* | 2.6 (2.1–3.4) | 130 |
TLC (l)* | 7.5 (6.2–8.4) | 119 |
Kco* | 1.0 (0.8–1.4) | 67 |
UZ Perc15 | −944.6 (−966.0 to −922.3) | N/A |
LZ Perc15 | −967.4 (−977.8 to −938.8) | N/A |
Combined Perc15 | −955.6 (−971.0 to −931.6) | N/A |
UZ VI −950 | 12.7 (5.3–23.8) | N/A |
LZ VI −950 | 26.6 (10.7–34.8) | N/A |
Combined VI −950 | 20.2 (8.1–28.7) | N/A |