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Table 1 Resistance rates of E. coli

From: Community acquired multi-drug resistant clinical isolates of Escherichia coli in a tertiary care center of Nepal

Antibiotics No. of resistant isolates (%) MDR (n = 156) XDR (n = 14)
No. of resistant isolates (%) No. of resistant isolates (%)
Penicillins    
Ampicillin 148 (74) 130 (83.3) 14 (100.0)
Penicillins with β-lactamase inhibitors    
Ampicillin-sulbactam 114 (57) 100 (64.1) 14 (100.0)
Narrow spectrum cephalosporins    
Cefazolin 142 (71) 122 (78.2) 14 (100.0)
Extended spectrum cephalosporins    
Ceftazidime 104 (52) 84 (53.8) 14 (100.0)
Ceftriaxone 82 (41) 68 (43.6) 14 (100.0)
Cefepime 62 (31) 68 (43.6) 14 (100.0)
Cephamycins    
Cefoxitin 82 (41) 66 (42.3) 14 (100.0)
Antipseudomonal penicillins with β-lactamase inhibitors    
Piperacillin-tazobactam 48 (24) 34 (21.8) 14 (100.0)
Ticarcillin-clavulanic acid 114 (57) 100 (64.1) 14 (100.0)
Amoxicillin-clavulanic acid 200 (100) 156 (100.0) 14 (100.0)
Monobactams    
Aztreonam 72 (36) 58 (37.2) 14 (100.0)
Carbapenems    
Imipenem 14 (7) 0 (0) 14 (100.0)
Meropenem 74 (37) 60 (38.5) 14 (100.0)
Aminoglycosides    
Gentamicin 40 (20) 26 (16.7) 14 (100.0)
Amikacin 20 (10) 6 (3.8) 14 (100.0)
Tobramycin 44 (22) 32 (20.5) 12 (85.7)
Fluoroquinolones    
Ciprofloxacin 154 (77) 142 (91.0) 14 (100.0)
Ofloxacin 94 (47) 78 (25.0) 14 (100.0)
Folate pathway inhibitors    
Cotrimoxazole 118 (59) 102 (65.4) 14 (100.0)
Phenicols    
Chloramphenicol 34 (17) 20 (12.8) 12 (85.7%)
Polymyxins    
Colistin 0 (0) 0 (0) 0 (0)