Table 3 Distribution of microorganisms recovered at the time of the first sampling in 107 positive samples in the groups exposed and unexposed to antibiotics
Total patients with confirmed IPN n = 48 Species n = 162 (100%) | Exposed group n = 30 species n = 97 (60%) | Unexposed group n = 18 species n =65 (40%) | P value | |
|---|---|---|---|---|
Bacteria | ||||
Gram-negative enterobacteriaceae | 82 (50.6) | 49 (50.5) | 33 (50.5) | 1 |
Escherichia coli | 36 (22.2) | 16 | 20 | |
Klebsiella pneumoniae | 11 (6.8) | 4 | 7 | |
Klebsiella oxytoca | 10 (6.2) | 9 | 1 | |
Enterobacter cloacae complex | 14 (8.6) | 13 | 1 | |
Citrobacter freundii | 2 (1.3) | 0 | 2 | |
Morganella morganii | 3 (1.8) | 3 | 0 | |
Proteus mirabilis | 3 (1.8) | 2 | 1 | |
Enterobacter aerogenes | 2 (1.3) | 1 | 1 | |
Hafnia alvei | 1 (0.6) | 1 | 0 | |
Gram-negative aerobic and anaerobic bacteria | 13 (8.1) | 11 (11) | 2 (0.3) | 0.13 |
Pseudomonas aeruginosa | 10 (6.2) | 9 | 1 | |
Acinetobacter baumannii | 1 (0.6) | 1 | ||
Stenotrophomonas maltophilia | 2 (1.3) | 1 | 1 | |
Gram-negative anaerobic bacteria | 23 (14.2) | 8 (8) | 15 (23) | 0.03 |
Bacteroides fragilis | 10 (6.2) | 2 | 8 | |
Prevotella spp. | 10 (6.2) | 5 | 5 | |
Other anaerobes | 3 (1.8) | 1 | 2 | |
Gram-positive bacteria | 38 (23.4) | 22 (23) | 14 (21) | 0.85 |
Enterococcus faecalis | 18 (11.1) | 9 | 7 | |
Enterococcus faecium | 4 (2.4) | 3 | 1 | |
Streptococcus | 6 (3.7) | 4 | 2 | |
Staphylococcus aureus | 7 (4.4) | 5 | 2 | |
Staphylococcus epidermidis | 3 (1.8) | 1 | 2 | |
Fungi | ||||
Candida | 6 (3.7) | 5 (0.5) | 1 (0.2) | 0.4 |
C. albicans | 4 (2.4) | 3 | 1 | |
C. glabrata | 2 (1.3) | 2 | 0 | |