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Enhanced clearance of vancomycin by hemodialysis in a child
R Schoumacher1, R L Chevalier, R A Gomez
1Department of Pediatrics, University of Virginia, Medical Center, Charlottesville 22908.
Insights
Vancomycin clearance by hemodialysis was previously thought negligible. This study shows rapid vancomycin removal in pediatric patients undergoing hemodialysis, necessitating dosage adjustments.
Area of Science:
- Pharmacokinetics
- Nephrology
- Pediatric Medicine
Background:
- Vancomycin is a critical antibiotic for treating serious Gram-positive infections.
- Hemodialysis is a life-sustaining treatment for pediatric patients with kidney failure.
- Previous literature suggested minimal vancomycin clearance during hemodialysis.
Observation:
- A pediatric patient on chronic hemodialysis received intravenous vancomycin for staphylococcal bacteremia.
- The patient utilized a hollow fiber dialyzer with a cellulose acetate membrane.
- Serum vancomycin levels were monitored during hemodialysis sessions.
Findings:
- A significant decrease of over 90% in serum vancomycin half-life was observed during each hemodialysis session.
- This indicates rapid and substantial vancomycin clearance by hemodialysis in this pediatric patient.
- The findings contradict the previously held belief of negligible vancomycin removal.
Implications:
- Vancomycin dosage regimens require adjustment in pediatric patients undergoing chronic hemodialysis.
- This challenges current dosing guidelines and highlights the need for individualized treatment strategies.
- Further research is warranted to confirm these findings across a larger pediatric population and different dialysis membranes.
Abstract:
Clearance of vancomycin by hemodialysis has previously been reported to be negligible. We describe a child undergoing chronic hemodialysis using a hollow fiber dialyzer with cellulose acetate membrane. When the patient was treated with intravenous vancomycin for staphylococcal bacteremia, the serum vancomycin half-life was found to decrease by more than 90% during each course of hemodialysis. We conclude that, contrary to prevailing opinion, vancomycin can be rapidly cleared by hemodialysis in the small pediatric patient, and that the dosage should be adjusted accordingly.