Antimicrobial resistance is a global health emergency estimated to be responsible for 700,000 deaths per year worldwide, and it is well known that previous antibiotic exposure is the single most contributing factor. For example, the use of non-antipseudomonal agents can increase risk for any P. aeruginosa strain; however, the use of an agent with antipseudomonal activity would select for resistance to that particular antimicrobial agent or class. Demonstrated that each additional day of exposure to any antipseudomonal beta-lactam is associated with an increased risk of new resistance development. The study seeks to determine whether the choice of empiric therapy (i.e., the same agent versus a different agent from prior antibiotic exposure) has any effect on the likelihood of in vitro activity against GN pathogens (GNPs) in a subsequent infection.
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Rates of resistance
Timeframe: charts from 4/1/2017 to 3/31/2021