Table 3.
Bacteria associated with ventilator-associated tracheobronchitis episodes
| Intention to treat | Modified intention to treat | |||
| Antibiotic treatment n = 22 |
No antibiotic treatment n = 36 |
Antibiotic treatment n = 18 |
No antibiotic treatment n = 26 |
|
| Microorganisms, number | 27 | 39 | 22 | 29 |
| Polymicrobial VAT | 5 (22) | 3 (8) | 4 (22) | 3 (11) |
| MDR bacteria | 10 (45) | 17 (47) | 9 (50) | 14 (53) |
| Gram-negative | 20 (90) | 27 (75) | 16 (88) | 20 (76) |
| Pseudomonas aeruginosa | 8 (36) | 11 (30) | 7 (31) | 9 (34) |
| Enterobacter species | 2 (9) | 3 (8) | 2 (11) | 3 (11) |
| Escherichia coli | 3 (13) | 3 (8) | 1 (5) | 2 (7) |
| Proteus mirabilis | 3 (13) | 1 (2) | 2 (11) | 1 (3) |
| Citrobacter freundii | 1 (4) | 2 (5) | 1 (5) | 1 (3) |
| Acinetobacter baumannii | 0 (0) | 2 (5) | 0 (0) | 2 (7) |
| Morganella morgani | 1 (4) | 2 (5) | 1 (5) | 1 (3) |
| Hemophilus influenzae | 0 (0) | 1 (2) | 0 (0) | 1 (3) |
| Stenotrophomonas maltophilia | 1 (4) | 1 (2) | 1 (5) | 0 (0) |
| Klebsiella oxytoca | 1 (4) | 1 (2) | 1 (5) | 0 (0) |
| Gram-positive | 7 (31) | 12 (33) | 6 (33) | 9 (34) |
| Methicillin-resistant Staphylococcus aureus | 3 (13) | 6 (16) | 3 (16) | 5 (19) |
| Methicillin-sensitive S. aureus | 3 (13) | 4 (11) | 2 (11) | 4 (15) |
| Streptococcus pneumoniae | 1 (4) | 2 (5) | 1 (5) | 0 (0) |
P > 0.2 for all comparisons (antibiotic versus no antibiotic treatment). Results are presented as number (percentage) unless otherwise indicated. MDR, multidrug-resistant; VAT, ventilator-associated tracheobronchitis.