ArticleWorld journal of emergency medicine2026
Clearance effects of blood purification on chlorfenapyr and tralopyril in chlorfenapyr poisoning patients.
Article in World journal of emergency medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThis study is to evaluate clearance effects of hemoperfusion (HP), continuous renal replacement therapy (CRRT), and plasma exchange (PE) for chlorfenapyr and its metabolite tralopyril in patients with acute poisoning.
methodsThis retrospective study included 18 patients with acute oral chlorfenapyr poisoning treated at our department between January 2022 and January 2024. All patients received conventional therapies combined with blood purification, including HP, CRRT, and PE. HP was performed three sessions within the first 24 h, followed by CRRT and PE. Serial blood samples were collected to measure plasma concentrations of chlorfenapyr and tralopyril using gas chromatography/liquid chromatography-mass spectrometry (GC/LC-MS). The toxin-clearance effects were assessed using a linear mixed-effects (LME) model.
resultsThe hourly decline rate of the plasma chlorfenapyr concentration (median [IQR]) was 8.83% (1.79%) for HP, 4.12% (1.26%) for CRRT, and 6.85% (1.44%) for PE. LME analysis showed higher decline rate in the plasma concentration with HP (
conclusionIn our study, HP was associated with a higher decline rate in plasma chlorfenapyr concentration compared to CRRT and PE, supporting HP as a preferred early intervention. However, all three methods showed limited efficacy in reducing tralopyril levels. Further research into the toxicokinetics and mechanisms of chlorfenapyr is warranted to optimize purification strategies.
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