Table 4 Microbiological techniques and complementary studies used to the diagnosis of ventilator-associated tracheobronchitis
Questions | Global | SPF group | Latin American group | P value | OR (95% CI) |
|---|---|---|---|---|---|
n = 288 | n = 141 | n = 147 | |||
n (%) | n (%) | n (%) | |||
Quantitative cultures | |||||
Yes | 217 (75.3) | 97 (68.8)a | 120 (81.6) | 0.01 | 0.5 (0.3-0.9) |
No | 66 (22.9) | 42 (29.8)a | 24 (16.4) | 0.01 | 2.2 (1.9-3.9) |
NR | 5 (1.7) | 2 (1.4) | 3 (2.0) | 1.00 | ND |
Gram stain technique | |||||
Yes | 116 (40.3) | 62 (44.0) | 54 (36.7) | 0.25 | ND |
No | 170 (59.0) | 78 (55.3) | 92 (62.6) | 0.25 | ND |
NR | 2 (0.7) | 1 (0.7) | 1 (0.7) | 1.00 | ND |
Bronchoscopy for the diagnosis of VAT | |||||
Never | 151 (52.4) | 73 (51.8) | 78 (53.1) | 0.92 | ND |
Only when the chest x-ray is not conclusive | 103 (35.8) | 50 (35.5) | 53 (36.1) | 1.00 | ND |
Only if I decide to start ATBs | 25 (8.7) | 13 (9.2) | 12 (8.2) | 0.91 | ND |
Always | 9 (3.1) | 5 (3.5) | 4 (2.7) | 0.95 | ND |
CT scan for the diagnosis of VAT | |||||
Never | 142 (49.2) | 82 (58.2)a | 60 (40.8) | 0.005 | 2.0 (1.2-3.3) |
Only when the chest x-ray is not conclusive | 139 (48.3) | 58 (41.1)a | 81 (55.1) | 0.02 | 0.5 (0.3-0.9) |
Always | 7 (2.4) | 1 (0.7) | 6 (4.1) | 0.14 | ND |