Laboratory practices for reporting bacterial susceptibility tests that affect antibiotic therapy

Area of Science:

• Medical Microbiology
• Infectious Diseases
• Clinical Pharmacy

Background:

• Antimicrobial resistance necessitates optimized antibiotic therapy.
• Effective communication between laboratory results and clinical practice is crucial for patient outcomes.
• Current reporting methods may delay appropriate antimicrobial adjustments.

Purpose of the Study:

• To assess a laboratory process integrating antimicrobial susceptibility, pharmacy, and clinical data.
• To evaluate the impact of rapid physician notification on patient care for bacterial infections.
• To determine if this integrated approach improves treatment outcomes.

Main Methods:

• A randomized case-control study design was employed.
• Comparison between standard microbiology reporting and a targeted notification procedure.
• Data included antimicrobial susceptibility, pharmacy records, and clinical information.

Main Results:

• A discordance between susceptibility results and antibiotic therapy was found in 55% of cases.
• Clinical review confirmed 19% of these cases required intervention.
• Targeted notification resulted in significantly earlier and more appropriate antibiotic therapy changes.

Conclusions:

• Integrating clinical and therapeutic information enhances the utilization of antimicrobial susceptibility results.
• Physician notification based on integrated data improves timeliness and appropriateness of antibiotic treatment.
• This approach is effective in optimizing patient care for bacterial infections.