Use of a Clinical Decision Support System Alert to Prevent Supratherapeutic Vancomycin Concentrations

Area of Science:

• Pharmacology
• Nephrology
• Health Informatics

Background:

• Acute kidney injury (AKI) is a risk for patients on nephrotoxic drugs like vancomycin.
• Clinical decision support systems (CDSS) can potentially mitigate this risk.
• Early detection of serum creatinine changes is key to preventing vancomycin-associated nephrotoxicity.

Purpose of the Study:

• To evaluate the effectiveness of a pharmacist-led CDSS alert system.
• To determine if early serum creatinine increase alerts reduce severe vancomycin concentrations.
• To assess the impact on preventing vancomycin-related kidney injury.

Main Methods:

• Retrospective analysis of a prospectively reviewed CDSS alert system.
• Identified patients with a 25% serum creatinine increase within 24 hours.
• Compared vancomycin concentrations (>30 mg/L) before (control) and after (study) alert implementation.

Main Results:

• The proportion of severely elevated vancomycin concentrations decreased from 5.3% to 3.7% after alert implementation.
• A statistically significant reduction (P = .04) in high vancomycin levels was observed.
• 696 CDSS alerts triggered during the study period.

Conclusions:

• Implementing CDSS alerts based on early serum creatinine detection significantly reduces severe vancomycin concentrations.
• This novel CDSS application shows promise in preventing vancomycin-induced kidney injury.
• Pharmacist-driven CDSS alerts are effective in managing nephrotoxic drug therapy.