Division of Infectious Diseases, Department of Internal Medicine, Houston Methodist Hospital, Houston, Texas, USA.
Division of Infectious Diseases, Department of Internal Medicine, Oregon Health and Science University, Portland, Oregon, USA.
Antimicrob Agents Chemother. 2023 Aug 17;67(8):e0066323. doi: 10.1128/aac.00663-23. Epub 2023 Jul 3.
Multidrug-resistant/extensively drug-resistant (MDR/XDR) Pseudomonas aeruginosa (PA) are critical antimicrobial resistance threats. Despite their increasing prevalence, treatment options for metallo-β-lactamase (MBL)-producing PA are limited, especially for New Delhi metallo-β-lactamase (NDM) producers. Pending further clinical studies, this case provides support for limited-scope use of cefepime-zidebactam for treating disseminated infections secondary to NDM-producing XDR PA. Susceptibilities should be tested and/or alternative regimens considered when treating isolates with alternative MBLs or increased efflux pump expression because some data suggest associated loss of cefepime-zidebactam susceptibility.
多药耐药/广泛耐药(MDR/XDR)铜绿假单胞菌(PA)是严重的抗微生物药物耐药威胁。尽管其流行率不断增加,但对于产金属β-内酰胺酶(MBL)的 PA 的治疗选择有限,尤其是对于新德里金属β-内酰胺酶(NDM)产生菌。在进一步的临床研究之前,本病例为有限使用头孢吡肟-他唑巴坦治疗由产 NDM 的 XDR-PA 引起的播散性感染提供了支持。在治疗具有其他 MBL 或增加外排泵表达的分离株时,应进行药敏试验和/或考虑替代方案,因为一些数据表明与头孢吡肟-他唑巴坦的敏感性相关的丧失。