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Antimicrobial Effectiveness01:28

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Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses
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Impact of a pilot multimodal intervention to decrease antibiotic use for respiratory infections in a geriatric

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Quality improvement initiatives reduced inappropriate antibiotic prescribing in older adults. Interventions included provider education and electronic order sets, leading to decreased overall antibiotic use and shorter prescription durations.

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Area of Science:

  • Geriatric Medicine
  • Infectious Diseases
  • Public Health

Background:

  • Over 80% of antibiotics are prescribed outpatient, with 30% being inappropriate.
  • Inappropriate antibiotic use is linked to adverse reactions and Clostridioides difficile infections, particularly in older adults.
  • National goals aim to reduce outpatient antibiotic use by 50% by 2020.

Purpose of the Study:

  • To evaluate the effectiveness of a quality improvement initiative in reducing antibiotic prescribing in an outpatient geriatric clinic.
  • To assess changes in the overall number and duration of antibiotic prescriptions for acute respiratory conditions.

Main Methods:

  • A before-and-after study design was employed at the University of Colorado Seniors Clinic.
  • Interventions included provider education on antibiotic guidelines and implementation of electronic antibiotic order sets with standardized stop dates.
  • Antibiotic use data were collected for six months pre- and post-intervention, with statistical analysis using descriptive statistics and linear mixed-effects regression models.

Main Results:

  • Total antibiotic prescriptions for acute respiratory conditions decreased from 137 to 112.
  • Prescriptions for broad-spectrum antibiotics, including levofloxacin and amoxicillin-clavulanate, declined.
  • Significant reductions in prescribed antibiotic durations were observed for sinusitis, pharyngitis, and otitis.

Conclusions:

  • Low-cost interventions successfully altered antibiotic prescribing patterns in older outpatient populations.
  • The initiative demonstrated initial success in decreasing overall antibiotic prescribing.
  • Further long-term studies are necessary to confirm the sustainability and clinical impact of these interventions.