Table 5.
Responsible microorganisms according to the site of intensive care unit–acquired bloodstream infections
| Primary bloodstream infection, n (%) | Ventilator-associated pneumonia, n (%) | Catheter-related bloodstream infection, n (%) | Urinary, n (%) | Other, n (%) | Total, n (%) | |
|---|---|---|---|---|---|---|
| Gram-positive cocci | 25 (22.1) | 7 (10) | 17 (37.8) | 4 (21.1) | 4 (26.7) | 57 (21.8) |
| Staphylococcus aureus | 3 (2.7) | 7 (10) | 12 (26.7) | 2 (10.5) | 1 (6.7) | 25 (9.5) |
| Coagulase-negative staphylococci | 12 (10.6) | 0 | 2 (4.4) | 0 | 2 (13.3) | 16 (6.1) |
| Enterococcus faecalis | 6 (5.3) | 0 | 2 (4.4) | 1 (5.3) | 1 (6.7) | 10 (3.8) |
| Streptococcus spp. | 3 (2.7) | 0 | 1 (2.2) | 1 (5.3) | 0 | 5 (1.9) |
| Enterococcus faecium | 1 (0.9) | 0 | 0 | 0 | 0 | 1 (0.4) |
| Gram-negative bacilli | 81 (71.7) | 62 (88.6) | 26 (57.8) | 13 (68.4) | 11 (73.3) | 193 (73.7) |
| Enterobacteriaceae | 63 (55.8) | 48 (68.6) | 18 (40) | 13 (68.4) | 9 (60) | 151 (57.6) |
| Klebsiella pneumoniae | 21 (18.6) | 24 (34.3) | 9 (20) | 8 (42.1) | 3 (20) | 65 (24.8) |
| Enterobacter cloacae | 14 (12.4) | 14 (20) | 2 (4.4) | 0 | 2 (13.3) | 32 (12.2) |
| Escherichia coli | 8 (7.1) | 1 (1.4) | 0 | 4 (21.1) | 3 (20) | 16 (6.1) |
| Enterobacter aerogenes | 8 (7.1) | 1 (1.4) | 4 (8.9) | 1 (5.3) | 0 | 14 (5.3) |
| Serratia marcescens | 3 (2.7) | 5 (7.1) | 1 (2.2) | 0 | 0 | 9 (3.4) |
| Citrobacter koseri | 3 (2.7) | 2 (2.9) | 1 (2.2) | 0 | 0 | 6 (2.3) |
| Enterobacter asburiae | 1 (0.9) | 0 | 1 (2.2) | 0 | 0 | 2 (0.8) |
| Klebsiella varicola | 1 (0.9) | 1 (1.4) | 0 | 0 | 0 | 2 (0.8) |
| Citrobacter freundii | 1 (0.9) | 0 | 0 | 0 | 0 | 1 (0.4) |
| Citrobacter yougae | 1 (0.9) | 0 | 0 | 0 | 0 | 1 (0.4) |
| Morganella morganii | 0 | 0 | 0 | 0 | 1 (6.7) | 1 (0.4) |
| Pantoea dispersa | 1 (0.9) | 0 | 0 | 0 | 0 | 1 (0.4) |
| Proteus mirabilis | 1 (0.9) | 0 | 0 | 0 | 0 | 1 (0.4) |
| Non-fermentative Gram-negative bacilli | 18 (15.9) | 14 (20) | 8 (17.8) | 0 | 2 (13.3) | 42 (16) |
| Pseudomonas aeruginosa | 5 (4.4) | 9 (12.9) | 4 (8.9) | 0 | 1 (6.7) | 19 (7.3) |
| Acinetobacter baumannii | 6 (5.3) | 4 (5.7) | 1 (2.2) | 0 | 0 | 11 (4.2) |
| Acinetobacter nosocomialis | 4 (3.5) | 0 | 1 (2.2) | 0 | 0 | 5 (1.9) |
| Aeromonas hydrophila | 0 | 0 | 1 (2.2) | 0 | 1 (6.7) | 2 (0.8) |
| Stenotrophomonas maltophilia | 1 (0.9) | 1 (1.4) | 0 | 0 | 0 | 2 (0.8) |
| Acinetobacter xylosoxidans | 1 (0.9) | 0 | 0 | 0 | 0 | 1 (0.4) |
| Burkholderia cepacia | 1 (0.9) | 0 | 1 (2.2) | 0 | 0 | 2 (0.8) |
| Candida spp. | 6 (5.3) | 0 | 2 (4.4) | 2 (10.5) | 0 | 10 (3.8) |
| Other | 1 (0.9) | 1 (1.4) | 0 | 0 | 0 | 2 (0.8) |
| Clostridium | 1 (0.9) | 0 | 0 | 0 | 0 | 1 (0.4) |
| Haemophilus influenzae | 0 | 1 (1.4) | 0 | 0 | 0 | 1 (0.4) |
| Total | 113 (100) | 70 (100) | 45 (100) | 19 (100) | 15 (100) | 262 (100) |