Table 3.
Resistance patterns of MDR E. coli test isolates.
| Resistance pattern | No. of isolates displaying each pattern | No. of resistant markers | MAR indexa |
|---|---|---|---|
| AMP-TZP-CXM-CIP-LEV-SXT | 1 | 6 | 0.35 |
| AMP-TZP-CXM-CIP-GAT-CN-AK | 3 | 7 | 0.41 |
| AMP-AMC-TZP-CXM-CTX-CIP-LEV-SXT | 2 | 8 | 0.47 |
| AMP-AMC-TZP-CXM-IMP-CIP-LEV-GAT-SXT-C | 3 | 10 | 0.59 |
| AMP-TZP-CL-CXM-CRO-CTX-FOX-CIP-CN-AK-SXT-TE-C | 1 | 13 | 0.76 |
AMP: ampicillin; AMC: amoxicillin/clavulanate; TZP: piperacillin/tazobactam; CL: cefalexin; CXM: cefuroxime; CRO: ceftriaxone; CTX: cefotaxime; FOX: cefoxitin; CIP: ciprofloxacin; LEV: levofloxacin; GAT: gatifloxacin; CN: gentamicin; AK: amikacin; SXT: trimethoprim/sulfamethoxazole; IPM: imipenem; TE: tetracycline; C: chloramphenicol.
a
Regarding to the different 19 antimicrobial was tested and MAR index can be calculated by dividing the number of antimicrobials to which E. coli isolate was resistant by the total number of antimicrobials to which the isolate was exposed.