Risk Factors Associated With Nephrotoxicity During Outpatient Intravenous Vancomycin Administration
Karen M Krueger1, Lisa LaCloche2, Amy Buros Stein3
1Division of Infectious Diseases, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
Summary
Vancomycin-associated nephrotoxicity is common in outpatient IV antibiotic therapy. Risk factors include fluoroquinolone co-administration, other nephrotoxic drugs, and high vancomycin trough levels.
Area of Science:
- Pharmacology
- Nephrology
- Infectious Diseases
Background:
- Intravenous vancomycin is linked to nephrotoxicity, primarily studied in hospitalized patients.
- Outpatient Parenteral Antimicrobial Therapy (OPAT) is increasing, presenting unique challenges.
- Limited data exists on vancomycin-associated nephrotoxicity specifically within the outpatient setting.
Purpose of the Study:
- To identify risk factors for vancomycin-associated nephrotoxicity in patients receiving treatment via an OPAT program.
- To determine the incidence of acute kidney injury (AKI) during outpatient vancomycin therapy.
Main Methods:
- A case-control study design was employed.
- Patients receiving intravenous vancomycin through an OPAT program were analyzed.
- Development of AKI during treatment was the primary outcome assessed.
Main Results:
- 28.5% of patients (37 out of 130) developed AKI.
- Increased risk of AKI was associated with longer vancomycin therapy duration.
- Higher maximum vancomycin trough concentrations and co-administration of fluoroquinolones or metronidazole increased AKI risk.
Conclusions:
- Vancomycin-associated nephrotoxicity is a significant concern in outpatient IV antibiotic therapy.
- Co-administration of fluoroquinolones, any nephrotoxic medication, and elevated vancomycin trough levels are key risk factors for AKI.
- Further research is required to understand long-term outcomes and develop strategies to mitigate nephrotoxicity risk.
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