Table 2.
Microorganisms isolated from blood cultures in patients with severe sepsis and septic shock according to outcome.
| Microorganism | All patients (n = 184) |
Survivors (n = 89, 48.4%) |
Nonsurvivors (n = 95, 51.6%) |
P value |
|---|---|---|---|---|
| Blood culture positive, n (%) | 63 (34.2) | 22 (24.7) | 41 (43.2) | 0.008 |
| Gram-positive, n (%) | 49 (26.6) | 18 (20.2) | 31 (32.6) | 0.36 |
| Gram-negative, n (%) | 14 (7.6) | 4 (4.5) | 10 (10.5) | |
| Gram-positive, n (%) | ||||
| Staphylococcus aureus | 29 (15.8) | 12 (13.5) | 17 (17.9) | 0.33 |
| Streptococcus pneumoniae | 11 (6.0) | 4 (4.5) | 7 (7.4) | |
| Enterococcus species | 6 (3.3) | 1 (1.1) | 5 (5.3) | |
| Listeria monocytogenes | 2 (1.1) | 1 (1.1) | 1 (1.1) | |
| Streptococcus viridans | 1 (0.5) | 0 (0) | 1 (1.1) | |
| Gram-negative, n (%) | ||||
| Escherichia coli | 6 (3.3) | 2 (2.2) | 4 (4.2) | |
| Klebsiella pneumoniae | 3 (1.6) | 1 (1.1) | 2 (2.1) | |
| Pseudomonas aeruginosa | 3 (1.6) | 1 (1.1) | 2 (2.1) | |
| Proteus mirabilis | 2 (1.1) | 0 (0) | 2 (2.1) |