Published: 2020-01-23

A prospective evaluation of correlation between cholinesterase level and severity of organophosphorus poisoning

M. Deepak Phanindra, P. V. V. Satyanarayana, Anand Acharya


Background: Organophosphorus compounds are anticholinesterases by inhibiting cholinesterase it protects acetyl chorine from hydrolysis. So, acetylcholine accumulates at the synapses, and all the clinical manifestation are due to that. So, this study has been designed to establish the reactive between level of serum and prognosis of op poisoning patients.

Methods: Patient with history of organophosphorus poisoning admitted into the emergency department with following exclusion and inclusion criteria were included in this study. All patients were managed as per standard treatment protocol of op poisoning. Various parameters like demography of the patients, sign and symptoms, severity of intoxication, clinical and lab parameter manoring, Serum cholinesterase was measured every alternate day.

Results: 22(47.84%) patients have mild symptom out of that 20 patient’s serum cholinesterase was more than 2000 IU/L, and 2(4.3%) patients serum cholinesterase was between 1000-2000 IU/L. In eighteen patient’s severity as per POP scale was moderate, out of that 2(4.3%) patients have serum cholinesterase was below 1000 IU/L, 8 having serum cholinesterase between 1000 to 2000 IU/L, and remaining eight having serum cholinesterase above 2000 IU/L.

Conclusions: Serum cholinesterase was less in patient with high severity score or low serum concentration of cholinesterase was associated with high severity score. Serum cholinesterase was improved as days passes.


Correlation, Organophosphorus, Serum cholinesterase, Severity

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