Table 2.
Microorganisms isolated in bronchoalveolar lavage fluid
| Ventilator-associated pneumonia (≥104 CFU/mL; n=70) | Non-ventilator-associated pneumonia (<104 CFU/mL; n=139) | |
|---|---|---|
| Staphylococcus aureus | 26 | 21* |
| Haemophilus spp | 12 | 4 |
| Escherichia coli | 9 | 6 |
| Pseudomonas aeruginosa | 6 | 4 |
| Klebsiella spp | 5 | 15 |
| Proteus mirabilis | 5 | 3 |
| Stenotrophomonas maltophilia | 3 | 5 |
| Streptococcus pneumoniae | 3 | 1 |
| Yeasts | 3 | 13 |
| Candida spp | 2 | 17 |
| Citrobacter spp | 2 | 2 |
| Enterobacter spp | 2 | 8 |
| Serratia marcescens | 2 | 3 |
| Staphylococcus spp | 2 | 6 |
| Streptococcus spp | 2 | 2 |
| Acinetobacter spp | 1 | 2 |
| Anaerobes | 1 | 0 |
| Coliform | 1 | 3 |
| Corynebacterium spp | 1 | 0 |
| Enterococcus spp | 1 | 1 |
| Gram-positive cocci | 1 | 2 |
| Moraxella catarrhalis | 1 | 0 |
| Prevotella spp | 1 | 0 |
| Aspergillus fumigatus | 0 | 4 |
| Burkholderia vietnamiensis | 0 | 1 |
| Morganella morganii | 0 | 2 |
| Neisseria spp | 0 | 1 |
Data are n of isolates (in some bronchoalveolar lavage samples, more than one organism was isolated). 68 patients in the non-ventilator-associated pneumonia column had no growth. CFU=colony-forming units.
*
In one case the organism isolated was meticillin-resistant Staphylococcus aureus.