Pharmacokinetics in Critically Ill Children with Acute Kidney Injury

Area of Science:

• Pediatric Critical Care Medicine
• Clinical Pharmacology
• Nephrology

Background:

• Acute kidney injury (AKI) is a frequent complication in critically ill children, significantly impacting drug pharmacokinetics and pharmacodynamics.
• Altered drug disposition in pediatric AKI can lead to therapeutic failures or adverse events due to underdosing or overdosing.
• Existing drug dosing guidelines for AKI are often based on adult populations and may not be applicable to children, especially with evolving continuous renal replacement therapy (CRRT) technologies.

Purpose of the Study:

• To review the pharmacokinetic principles relevant to drug dosing in critically ill children with AKI.
• To discuss the complexities and challenges in managing drug therapy for pediatric AKI.
• To provide a framework for tailoring drug regimens in this vulnerable population.

Main Methods:

• Literature review focusing on pharmacokinetic alterations in pediatric AKI.
• Analysis of drug dosing considerations during continuous renal replacement therapy (CRRT) in children.
• Synthesis of current evidence to guide clinical practice.

Main Results:

• AKI significantly alters drug absorption, distribution, metabolism, and excretion in children.
• Specific pharmacokinetic changes necessitate individualized dosing adjustments for various drug classes.
• Advances in CRRT technology require updated approaches to drug dosing during renal replacement therapy.

Conclusions:

• A thorough understanding of pharmacokinetic principles is essential for optimizing drug therapy in pediatric AKI.
• Developing tailored dosing strategies is critical to ensure therapeutic efficacy and patient safety.
• This review offers a framework to enhance precision and ease in managing drug regimens for critically ill children with AKI.