<prompt> After suxamethonium 50mg, apnea persists for one hourTreatment with cholnesterase is indicatedProbab1y an atypical cholinesterase is presentTreatment with stored blood is indicatedApnea may be due to low serum potassium concentration  <response>: Cholinesterase is a family of enzymes present in the central nervous system, particularly in of this enzyme in any tissue most likely has no significance in terms of health.Discriminates three phenotypes: Normal, intermediate, and atypical. 