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Objective: This study presents real-life experience with cefiderocol used on a compassionate basis for treatment of three patients with severe infections caused by extensively/pan-drug resistant (XDR/PDR) Acinetobacter baumannii (Ab).
Methods: Serum bactericidal activity was determined and considered as a surrogate of cefiderocol susceptibility.
Results: Clinical improvement and microbiological eradication of A. baumannii were observed in all three patients, who were affected by extremely complex conditions either for type of infection, adverse effect or resistance profile of A. baumannii.
Conclusion: Cefiderocol for XDR/PDR-Ab infections might be reconsidered, especially in light of the recent disappointing results of the CREDIBLE-CR study.
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http://dx.doi.org/10.1016/j.jgar.2020.09.019 | DOI Listing |
JAC Antimicrob Resist
August 2025
Division of Infectious Diseases and Center for Infectious Diseases, Houston Methodist Hospital and Houston Methodist Research Institute, Houston, TX, USA.
Background: Infections due to antimicrobial-resistant Gram-negative organisms present increasingly difficult therapeutic challenges, especially in the presence of metallo-β-lactamases. We present the case of a patient with cholangitis due to and isolates that developed cefiderocol resistance on therapy treated successfully with cefepime-zidebactam.
Methods: Serial clinical isolates recovered from biliary fluid and ascitic fluid were tested for susceptibility to cefiderocol, aztreonam-avibactam, cefepime-taniborbactam, cefepime-zidebactam, and cefiderocol-xeruborbactam by broth microdilution.
Front Pharmacol
May 2025
Servicio Antimicrobianos, National Reference Laboratory for Antimicrobial Resistance, Instituto Nacional de Enfermedades Infecciosas, ANLIS "Dr. Carlos Malbrán", Buenos Aires, Argentina.
Introduction: The spread pan-drug resistant pathogens pose a critical challenge to current therapies, resulting in high mortality and necessitating alternative approaches.
Methods: We report pan-drug resistant Klebsiella pneumoniae isolates from five patients in a single hospital, including resistance to cefiderocol and cefepime-zidebactam in one isolate.
Results: Whole-genome sequencing identified blaNDM-5 and blaCTX-M-15 genes in all isolates, explaining carbapenemase and extended-spectrum β- lactamase phenotypes, with blaKPC-2 in one isolate.
Infection
December 2024
M.I.T.O. (Infections in Traumatology and Orthopedics Surgery) Study Group, Policlinico Umberto I Hospital, Viale del Policlinico 155, 00161, Rome, Italy.
Infection
December 2024
M.I.T.O. (Infections in Traumatology and Orthopedics Surgery) Study Group, Policlinico Umberto I Hospital, Viale del Policlinico 155, 00161, Rome, Italy.
Purpose: Fracture-related infections (FRI) pose a difficult management problem, as they require numerous surgical interventions and extended antibiotic treatments, especially when a multidrug-resistant organism is involved, with a paucity of available literature that provides guidance.
Results: A 42 year-old male presents an open diaphyseal tibia and fibula fracture, complicated by soft tissue necrosis and infections caused by extensively drug-resistant Acinetobacter baumannii (XDR-Ab). Initially treated with a damage control external fixator, the patient underwent multiple surgical procedures, including radical debridement, negative pressure wound therapy, external fixator revisions and reconstructive surgery using a latissimus dorsi free flap.
Open Forum Infect Dis
October 2023
Division of Infectious Diseases, Department of Medicine, LSU Health Shreveport, Shreveport, Louisiana, USA.