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HOME > J Korean Soc Clin Toxicol > Volume 4(2); 2006 > Article
Time-variable Analysis of Cholinesterase Levels in Patients with Severe Organophosphate Poisoning
Han-Joon Kim, Kyu-Nam Park, Mi-Jin Lee
Journal of The Korean Society of Clinical Toxicology 2006;4(2):113-121
DOI: https://doi.org/
Published online: December 31, 2006
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1Department of Emergency Medicine, College of Medicine, The Catholic University of Korea
2Department of Emergency Medicine, College of Medicine, The Catholic University of Korea
3Department of Emergency Medicine, College of Medicine, The Catholic University of Korea

Purpose: Previous studies have reported that plasma cholinesterase (AchE) concentration can serve as a useful prognostic parameter in cases of acute organophosphate (OP) poisoning. However, there has been considerable disagreement regarding the degree of its prognostic value. Earlier cross-sectional and one- time point studies were plagued with methodologic flaws, making it difficult to interpret their results. The purpose of this study was to clarify the prognostic value of time-variable cholinesterase levels and their relationship with clinical outcomes in OP poisoning. Methods: We reviewed medical and intensive care records of patients with acute OP poisoning admitted to our emergency department between March 1998 and Sep 2006. We collected patient information regarding poisoning, clinical, and demographic features. Patients were assessed for clinical outcomes and AchE concentrations on days 1, 2, 3, 5, and 7 and on the final day. Results: During the study period, 58 patients were enrolled in this study. There was a statistically significant difference in the AchE differentials on 1-3 days for patients requiring mechanical ventilation and for patients with mild poisoning (p<0.05). Also, the decrease in the log AchE concentration correlated with longer durations of mechanical ventilation (r=-0.411, p=0.002). Conclusion: In severe OP poising, measurements of time-variable AchE concentrations can be helpful in the prediction of mortality, the development of intermediate syndrome, and duration of mechanical ventilation.


JKSCT : Journal of The Korean Society of Clinical Toxicology