Antibiotic susceptibility

CH Chienhsiu Huang
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Antibiotic susceptibility was tested using the VITEK® II system with VITEK® II Gram Negative Susceptibility cards (bioMérieux, Marcy-l’Étoile, France) with Clinical & Laboratory Standards Institute interpretive criteria M100–25. One Gram-negative (GN) identification card and another VITEK II AST-N322 card (for susceptibility testing of aerobic GN bacilli against specified antimicrobials) were placed in the neighboring slots, along with the transfer tube and the corresponding suspension tube [29]. The complete list of antibiotics used in susceptibility testing for A. faecalis, including piperacillin, piperacillin-tazobactam, ceftazidime, cefepime, cefotaxime, ceftriaxone, ampicillin-sulbactam, imipenem, meropenem, gentamicin, amikacin, ciprofloxacin, levofloxacin in our microbiology laboratory which was reference from clinical and laboratory standards institute (30th edition). Our microbiology laboratory susceptibility test report for A. faecalis included piperacillin-tazobactam, ceftazidime, cefepime, imipenem, meropenem, gentamicin, amikacin, ciprofloxacin, and ampicillin-sulbactam. If the susceptibility test showed resistant to all antibiotics, tigecycline susceptibility in A. faecalis would be done by the disc diffusion method.

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The definition of MDR/XDR cites the literature of Maggiorakos et al. [30]

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