Pharmacokinetics in children with chronic kidney disease

Area of Science:

• Pediatric Nephrology
• Clinical Pharmacology
• Drug Metabolism and Pharmacokinetics

Background:

• Chronic kidney disease (CKD) in children often stems from congenital conditions and glomerular disorders.
• CKD induces physiological alterations impacting drug pharmacokinetics (PK), including reduced renal clearance due to decreased glomerular filtration rate.
• The effects of renal impairment extend beyond renal excretion, influencing drug absorption, distribution, transport, and metabolism.

Purpose of the Study:

• To review known pharmacokinetic alterations associated with CKD.
• To apply existing knowledge to the pediatric CKD population.
• To provide clinical guidance for drug selection and dosing in pediatric CKD patients.

Main Methods:

• Literature review of pharmacokinetic changes in CKD.
• Extrapolation of findings to pediatric populations.
• Synthesis of evidence to inform clinical practice.

Main Results:

• CKD significantly alters multiple pharmacokinetic parameters in children.
• Drug absorption, distribution, metabolism, and excretion are all potentially affected by renal dysfunction.
• Maturation also plays a crucial role in drug disposition and action in pediatric patients.

Conclusions:

• Evidence for guiding drug dosing in pediatric CKD patients is currently insufficient.
• Clinicians must consider PK changes and developmental factors when prescribing medications to pediatric CKD patients.
• Adjusting drug selection and dosage is critical to prevent toxicity and enhance therapeutic efficacy in this population.