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The Effects Of Antibacterial Resistance On Bacterial Infections Essay

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Ceftazidime is a third generation cephalosporin antibiotic used to treat a number of bacterial infections, particularly Pseudomonas and other Gram negatives, and its activity relies on binding of essential penicillin-binding proteins (PBPs) (1). Despite its effectiveness against certain bacteria, there have been reports of rapidly increasing incidences of antibacterial resistance to ceftazidime caused by extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae (2). Recently, a new beta-lactam/beta-lactamase inhibitor combination, ceftazidime-avibactam (AVYCAZ) has shown to have “in vitro activity against Enterobacteriaceae in the presence of some beta-lactamases and extended-spectrum beta-lactamases” and is FDA-approved for treating complicated intra-abdominal infections as well as complicated urinary tract infections (1). Due to the resistance frequency of inpatient Enterobacteriaceae isolates at the University of Washington Medical Center (4), susceptibility testing of Ceftazidime and Ceftazidime-Avibactam are crucial to ensure antibiotic treatment efficacy and to take action to reduce the spread of multi-drug resistant bacteria in a hospital setting. The current primary gold standard method for MIC determination of Ceftazidime in non-fastidious Gram negative isolates at University of Washington Medical Center, Microbiology Clinical Laboratory is TREK Sensitre® micro-broth dilution, a diagnostic tool that utilizes fluorescence technology to monitor the growth of

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