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Table 2 Antibiotic susceptibility

From: An international multicenter retrospective study of Pseudomonas aeruginosa nosocomial pneumonia: impact of multidrug resistance

Antibiotic class Multidrug-resistant (n = 226) Non-multidrug-resistant (n = 514) P -value
Aminoglycosides 226 (29.2%) 505 (91.1%) <0.001
Antipseudomonal carbapenems 226 (15.0%) 508 (84.6%) <0.001
Antipseudomonal cephalosporins 226 (26.5%) 504 (93.7%) <0.001
Antipseudomonal fluoroquinolones 222 (21.5%) 502 (88.4%) <0.001
Antipseudomonal penicillins + 221 (22.2%) 502 (89.0%) <0.001
β-lactamase inhibitors
Monobactams 158 (13.9%) 208 (81.2%) <0.001
Phosphonic acids 86 (40.7%) 105 (81.0%) <0.001
Polymyxins 159 (97.5%) 215 (92.1%) 0.025
  1. Data presented as number of isolates tested (% susceptible). Multidrug-resistant: non-susceptible to one or more agents in three or more antibiotic classes.