What is the purpose of routine cholinesterase monitoring?

• A. To monitor for liver function
• B. To enable a physician to recognize excessive exposure to organophosphates and carbamates
• C. To assess respiratory rate
• D. To determine skin sensitivity

Answer: (B)

Cholinesterase monitoring checks the activity of the cholinesterase enzyme in the blood because certain pesticides, like organophosphates and carbamates, inhibit this enzyme. When exposure happens, the enzyme’s activity drops, often before obvious symptoms appear. Having a baseline test and regular follow-ups lets a clinician detect a meaningful decrease, indicating excessive exposure and prompting timely medical evaluation and protective actions. It isn’t about liver function, respiratory rate, or skin sensitivity, which are assessed by other tests and observations.