Comparison between kidney and hemoperfusion for paraquat elimination

Area of Science:

• Toxicology
• Nephrology
• Critical Care Medicine

Background:

• Acute paraquat (PQ) poisoning has a high mortality rate, influenced by blood PQ concentration.
• Kidneys are primary PQ eliminators, but acute intoxication often causes early renal function deterioration.
• Comparing PQ elimination via hemoperfusion (HP) and native kidney function is crucial, especially with impaired renal function.

Purpose of the Study:

• To compare the efficacy of paraquat (PQ) elimination by hemoperfusion (HP) versus renal excretion in patients with acute PQ intoxication.
• To evaluate the impact of deteriorating renal function on PQ elimination methods.
• To determine the optimal timing for HP in acute PQ poisoning management.

Main Methods:

• Measurement of renal and HP excretion of PQ during HP procedures in acute PQ intoxication patients.
• Calculation of PQ clearance and actual PQ elimination amounts for both HP and renal routes.
• Correlation analysis between creatinine clearance and PQ elimination efficiency by HP and kidneys.

Main Results:

• Hemoperfusion (HP) demonstrated a PQ clearance of 111+/-11 mL/min and eliminated 251.4+/-506.3 mg of PQ.
• Renal elimination showed a PQ clearance of 79.8+/-56.0 mL/min and eliminated 75.4+/-73.6 mg of PQ.
• PQ elimination by HP was as effective as or superior to renal elimination, particularly as creatinine clearance decreased.

Conclusions:

• Early hemoperfusion (HP) is a vital life-saving intervention for patients with acute paraquat (PQ) intoxication.
• HP effectively enhances PQ elimination, compensating for diminished renal function.
• Prompt initiation of HP is recommended for managing acute PQ poisoning.