Table 2a.
Agreement between direct AST and automated VITEK-2 AST among enterobacteriaceae (n = 73).
| Antimicrobial agent | Number of isolates tested |
|||
|---|---|---|---|---|
| Agreement | VME | ME | mE | |
| Ampicillin | 73 | |||
| Amoxicillin/clavulanic acid | 72 | 1 | ||
| Cefuroxime | 72 | 1 | ||
| Piperacillin/tazobactam | 73 | |||
| Ceftriaxone | 73 | |||
| Cefepime | 72 | 1 | ||
| Ertapenem | 73 | |||
| Imipenem | 72 | 1 | ||
| Meropenem | 72 | 1 | ||
| Amikacin | 73 | |||
| Gentamicin | 70 | 1 | 2 | |
| Ciprofloxacin | 73 | |||
| Trimethoprim/sulfamethoxazole | 71 | 1 | 1 | |
| Overall agreement for isolate antimicrobial combinations (%)a | 939 (98.95) | 2 (0.21) | 4 (0.42) | 4 (0.42) |
AST, antimicrobial susceptibility test; VME, very major error; ME, major error; mE, minor error.
a
Total number of isolate antimicrobial combinations = 949 (73 isolates × 13 antimicrobials).