Determinants of aciclovir-induced nephrotoxicity in children
Ruth Schreiber1, Jacob Wolpin, Gideon Koren
1Division of Clinical Pharmacology/Toxicology, Hospital for Sick Children and University of Toronto, Toronto, Ontario, Canada.
Insights
Aciclovir can cause kidney damage in children. Risk factors include using other nephrotoxic drugs and having a lower baseline glomerular filtration rate (GFR).
Area of Science:
- Pediatric Nephrology
- Pharmacology
- Infectious Diseases
Background:
- Aciclovir is a primary treatment for severe herpes virus infections.
- Nephrotoxicity is a known adverse effect of Aciclovir.
- Limited data exists on Aciclovir-induced nephrotoxicity in children.
Purpose of the Study:
- To determine risk factors for Aciclovir-associated nephrotoxicity in pediatric patients.
- To investigate the impact of concomitant medications and baseline kidney function on Aciclovir nephrotoxicity.
Main Methods:
- Retrospective review of 126 pediatric patients treated with Aciclovir.
- Calculation of glomerular filtration rate (GFR) using Schwartz's method at baseline and peak creatinine.
- Analysis of patient data including age, sex, immunosuppression status, and co-administered drugs.
Main Results:
- Aciclovir treatment significantly increased serum creatinine and decreased GFR in pediatric patients (p
- Children receiving other nephrotoxic drugs experienced more severe nephrotoxicity.
- Concomitant use of nephrotoxic drugs (p = 0.02) and impaired baseline GFR (p = 0.04) were significant predictors of nephrotoxicity.
Conclusions:
- Aciclovir dosage per kg, age, or sex did not influence nephrotoxicity within recommended schedules.
- Concomitant nephrotoxic drug use and impaired baseline GFR are key predictors of Aciclovir-induced nephrotoxicity in children.
- These findings highlight the importance of monitoring kidney function and reviewing concurrent medications in pediatric patients receiving Aciclovir.
Background:
Aciclovir is the drug of choice for severe systemic herpes virus infections. Nephrotoxicity is one of the clinically significant adverse effects of this drug, but studies examining nephrotoxicity in children are scarce.
Objective:
To identify risk factors for aciclovir-associated nephrotoxicity in the pediatric population.
Patients And Methods:
A retrospective review was conducted on all children (mean age 81 months; n = 126 [74 boys]) who were treated with aciclovir in a tertiary center between July 2005 and January 2006 and who met our inclusion criteria. Glomerular filtration rate (GFR) was calculated on the first day of treatment and at the peak measured creatinine level while on therapy, using Schwartz's method.
Results:
Aciclovir therapy was associated with a significant increase in serum creatinine levels and a parallel decrease in GFR (n = 93; both p
Conclusions:
Within the recommended age-dependent dosage schedule of aciclovir there was no effect of dose per kg, age, or sex on nephrotoxicity. The predictors of aciclovir nephrotoxicity were the concomitant use of nephrotoxic drugs and impaired GFR at baseline.
Related Concept Videos
Pharmacokinetics in Pediatric Patients: Drug Excretion
Antiviral Nucleoside Inhibitors
Acute Kidney Injury IV: Diagnostic Studies and Prevention
Renal Failure: Dose Adjustments
Reduced renal clearance and elimination rate are common outcomes of renal impairment. These alterations lead to a prolonged elimination half-life and an altered apparent volume of distribution for drugs. As a result, dosage adjustments are typically necessary to maintain optimal drug levels in the body.
However, dosage adjustments...
Drug Dosing in Renal Diseases: Dose Adjustments Based on Drug Clearance and Elimination Rate Constant
Acute Kidney Injury III: Clinical Manifestations
