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Παρασκευή 18 Μαΐου 2018

Lack of improvement in antimicrobial prescribing after a diagnosis of Clostridium difficile and impact on recurrence

Publication date: Available online 18 May 2018
Source:American Journal of Infection Control
Author(s): Richard L. Watson, Christopher J. Graber
BackgroundAntimicrobial use is one of the largest modifiable risk factors for development of Clostridium difficile infection (CDI). We sought to determine if a recent diagnosis of CDI affected the appropriateness of subsequent antimicrobial prescribing.MethodsThis study is a retrospective electronic chart review of the Greater Los Angeles Veterans Administration. Medication administration records were reviewed for all patients with new CDI from 2015-2016 to determine the appropriateness (drug choice, duration, and dosage) of all non-CDI antimicrobials prescribed within 90 days pre- and post-initial CDI (iCDI) positive testing.ResultsOf the 210 patients diagnosed with new-onset iCDI, 140 met inclusion criteria. Of antimicrobial courses prescribed, 40.6% of pre-iCDI were inappropriate compared with 43.1% of post-iCDI, demonstrating no difference in prescribing habits (P = .717). Thirty-three patients developed recurrent CDI (rCDI). After adjustment for other known risk factors, inappropriate antimicrobial use was associated with a significant increased risk of recurrence compared with appropriate use alone (odds ratio [OR], 6.19; 95% confidence interval [CI], 1.45-26.42). Antimicrobial use in general was associated with increased recurrence compared with no antimicrobial use post-iCDI (OR, 2.6; 95% CI, 1.16-5.84); however, after adjustment, it was no longer significant (OR, 2.13; 95% CI, 0.90-5.04).ConclusionsThe appropriateness of antimicrobial prescribing was not affected by the diagnosis of recent CDI. Inappropriate antimicrobial use after iCDI was associated with higher risk of rCDI.



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