Dosing nucleoside reverse transcriptase inhibitors in adults receiving continuous veno-venous hemofiltration

Area of Science:

• Pharmacology
• Nephrology
• Critical Care Medicine

Background:

• Nucleoside reverse transcriptase inhibitors (NRTIs) are susceptible to removal by continuous veno-venous hemofiltration (CVVH).
• Standard anephric doses may lead to suboptimal NRTI concentrations during CVVH.
• This poses a challenge for managing HIV-infected patients requiring renal replacement therapy.

Purpose of the Study:

• To develop evidence-based dosing recommendations for NRTIs in adult patients undergoing CVVH.
• To address the potential for drug removal and sub-therapeutic levels of NRTIs during CVVH.
• To guide clinicians in optimizing NRTI therapy for critically ill patients with renal failure.

Main Methods:

• Utilized a mathematical formula to estimate NRTI removal during CVVH at various flow rates.
• Calculated the necessary supplemental NRTI dosage to maintain therapeutic drug concentrations.
• Developed a dosing table based on these calculations.

Main Results:

• A table of proposed NRTI dosing recommendations for use during CVVH is presented.
• The recommendations aim to counteract drug elimination by CVVH.
• This provides a practical tool for clinicians.

Conclusions:

• Clinicians should apply these NRTI dosing recommendations judiciously, considering individual patient factors and illness severity.
• Further pharmacokinetic research is needed to correlate plasma and intracellular NRTI concentrations during CVVH.
• Optimizing NRTI dosing during CVVH is crucial for effective HIV management in critically ill patients.