Table 1.
Prevalence of Resistance Among the Main Gram-Negative Species According to the Analyzed Definitions
| E. coli (n = 941), No. (%) | K. pneumoniae (n = 326), No. (%) | P. aeruginosa (n = 130), No. (%) | A. baumannii (n = 33), No. (%) | |
|---|---|---|---|---|
| Resistance categories | ||||
| Non-MDR | 742 (78.9) | 133 (40.8) | 111 (85.4) | 11 (33.3) |
| MDR | 197 (20.9) | 69 (21.2) | 19 (14.6) | 3 (9.1) |
| XDR | 2 (0.2) | 117 (35.9) | 0 | 19 (57.6) |
| PDR | 0 | 7 (2.1) | 0 | 0 |
| Antibiotic class resistance | ||||
| BL/BLIR | 371 (39.5) | 215 (66) | 37 (38.5) | NA |
| ECR | 296 (31.5) | 207 (63.5) | 26 (20) | NA |
| CR | 1 (0.1) | 140 (42.9) | 36 (27.7) | 22 (66.7) |
| FQR | 438 (46.5) | 198 (60.7) | 33 (25.4) | 22 (66.7) |
| New definition | ||||
| DTR | 1 (0.1) | 138 (42.3) | 10 (7.7) | 22 (66.7) |
Abbreviations: BL/BLIR, betalactam/betalactamase inhibitor resistance; CR, carbapenem resistance; DTR, difficult-to-treat resistance; ECR, extended-spectrum cephalosporin resistance; FQR, fluoroquinolone resistance; MDR, multidrug resistance; PDR, pandrug resistance, XDR, extensive drug resistance.