Table 4.
Chest HRCT scan characteristics of study cohort (17 patients did not perform HRCT and are not considered here)
| Oxygen only (N = 56) |
CPAP (N = 129) |
IMV (N = 85) |
p | |
|---|---|---|---|---|
| N(%) | N(%) | N(%) | ||
| Abnormal chest HRCT, N (%) | 26 (46) | 84 (65) | 68 (80) | < 0.001 |
| Abnormalities | ||||
| Air-space consolidation | 2 (4) | 4 (3) | 2 (2) | 0.90 |
| Ground-glass attenuation | 17 (30) | 62 (48) | 60 (71) | < 0.001 |
| GGO with traction bronchiectasis | 9 | 28 | 24 | |
| Reticular abnormalities | 15 (27) | 41 (32) | 42 (49) | 0.01 |
| Honeycombing | 0 (0) | 2 (2) | 1 (1) | 1.00 |
| Emphysema | 1 (2) | 18 (14) | 11 (13) | 0.02 |
| Centrilobular emphysema | 1 (100) | 14 (65) | 7 (64) | 1.00 |
| Panlobular emphysema | 0 (0) | 1 (10) | 0 (0) | |
| Paraseptal emphysema | 0 (0) | 3 (25) | 7 (70) | |
| Bronchiectasisa | 2 (4) | 3 (2) | 9 (11) | 0.03 |
| Mediumb bronchial enlargement | 0 (0) | 1 (33) | 7 (78) | |
| Moderatec bronchial enlargement | 2 (100) | 1 (33) | 1 (11) | |
| Severed bronchial enlargement | 0 (0) | 1 (33) | 1 (11) | |
| Organizing pneumonia | 0 | 0 | 0 | – |
| Lung lobes involved | ||||
| Left upper lobe | 14 (25) | 46 (36) | 56 (66) | – |
| Right upper lobe | 15 (27) | 55 (43) | 56 (66) | – |
| Right middle lobe | 6 (11) | 24 (19) | 39 (46) | – |
| Lingula | 4 (7) | 19 (15) | 36 (42) | – |
| Left lower lobe | 16 (29) | 53 (41) | 39 (46) | – |
| Right lower lobe | 20 (36) | 60 (47) | 47 (55) | – |
HRCT high-resolution computed tomography, GGO ground glass opacities
aExclusion of traction bronchiectasis
bLuminal diameter slightly larger than the adjacent vessel
cBronchial diameter between 2 and 3 times the diameter of the adjacent vessels
dBronchus is more than 3 times the diameter of the adjacent vessel