Table 4.
Bacterial pathogens that developed new resistance distribution
| New resistance | |||||
|---|---|---|---|---|---|
| Cefepime (n=61) |
Meropenem (n=103) |
Piperacillin- tazobactam (n=108) |
|||
| Pathogens, n (%) | |||||
| Achromobacter species | 6 (9.8) | 2 (1.9) | 1 (1) | ||
| Acinetobacter baumannii | 12 (19.7) | 11 (10.7) | 5 (4.9) | ||
| Burkholderia cepacia | 0 (0) | 2 (1.9) | 0 (0) | ||
| Citrobacter species | 3 (4.9) | 0 (0) | 8 (7.8) | ||
| Enterobacter species | 8 (13.1) | 9 (8.7) | 44 (42.7) | ||
| Escherichia coli | 14 (23.0) | 2 (1.9) | 10 (9.7) | ||
| Klebsiella oxytoca | 2 (3.3) | 0 (0) | 4 (3.9) | ||
| Klebsiella pneumoniae | 3 (4.9) | 4 (3.9) | 14 (13.6) | ||
| Morganella morganii | 0 (0) | 0 (0) | 0 (0) | ||
| Proteus mirabilis | 1 (1.6) | 1 (1.0) | 0 (0) | ||
| Providencia species | 0 (0) | 1 (1.0) | 0 (0) | ||
| Pseudomonas aeruginosa | 11 (18.0) | 67 (65.0) | 13 (12.6) | ||
| Serratia species | 0 (0) | 0 (0) | 8 (7.8) | ||
| Stenotrophomonas maltophilia | 1 (1.6) | 3 (2.9) | 0 (0) | ||
| Other rare gram-negative pathogen | 0 (0) | 0 (0) | 1 (1.0) | ||
| Source of isolation, n (%)a | |||||
| Blood | 27 (23.1) | 20 (11.4) | 41 (16.9) | ||
| Respiratory specimen | 50 (42.7) | 88 (50.3) | 90 (37.0) | ||
| Urine | 27 (23.1) | 34 (19.4) | 41 (16.9) | ||
| Other | 13 (11.1) | 33 (18.9) | 71 (29.2) | ||
a
Different totals are due to some resistant pathogen being isolated from multiple culture sites in the same patient