The challenges of multiple organ dysfunction syndrome and extra-corporeal circuits for drug delivery in critically...

Area of Science:

• Critical Care Medicine
• Clinical Pharmacology
• Nephrology

Background:

• Multiple organ dysfunction syndrome (MODS) is a leading cause of mortality in intensive care units (ICUs).
• Organ dysfunction, particularly in the liver and kidneys, profoundly impacts drug pharmacokinetics (PKs).
• Altered PKs can cause subtherapeutic drug levels or toxic accumulation, complicating patient management.

Purpose of the Study:

• To review the main pharmacokinetic changes in critically ill patients with MODS.
• To discuss the impact of organ dysfunction and extracorporeal circuits on drug concentrations.
• To highlight the clinical implications of PK alterations in ICU settings.

Main Methods:

• Literature review focusing on pharmacokinetic alterations in MODS.
• Analysis of drug disposition changes due to liver and kidney dysfunction.
• Consideration of the effects of extracorporeal circuits like ECMO and CRRT.

Main Results:

• MODS significantly alters drug absorption, distribution, metabolism, and excretion.
• Extracorporeal circuits (ECMO, CRRT) introduce further pharmacokinetic variability.
• Drug concentrations may become insufficient or toxic, impacting therapeutic efficacy and safety.

Conclusions:

• Clinicians must recognize PK abnormalities in MODS patients to address unexpected therapeutic challenges.
• Current evidence from large prospective studies is insufficient for specific drug regimen adjustments.
• Understanding PK changes is essential for optimizing drug therapy in critically ill patients with multiple organ dysfunction.