Comparison between kidney and continuous plasma perfusion for paraquat elimination

Area of Science:

• Toxicology
• Nephrology
• Critical Care Medicine

Background:

• Acute paraquat (PQ) poisoning remains a significant cause of mortality.
• Plasma perfusion (PP) is an emerging clinical detoxification technique.
• Limited data exists on the efficacy of PP in PQ poisoning management.

Purpose of the Study:

• To quantify paraquat clearance achieved by plasma perfusion.
• To assess the impact of plasma perfusion on blood paraquat concentrations in poisoned patients.

Main Methods:

• Prospective enrollment of 21 patients with acute PQ poisoning within 24 hours of ingestion.
• Continuous plasma perfusion sessions were conducted.
• Paraquat levels in plasma (inlet/outlet) and urine were measured before and after perfusion to calculate excretion rates.

Main Results:

• Plasma perfusion demonstrated significantly higher paraquat clearance rates (mL/min) compared to renal clearance across multiple sessions (P < 0.05).
• Survivors exhibited a greater plasma paraquat reduction rate (mg/L/hour) than non-survivors (P < 0.05).

Conclusions:

• Plasma perfusion therapy is effective in clearing paraquat from the bloodstream.
• PP shows potential as a valuable therapeutic intervention for acute paraquat intoxication.