MONDO_0015270 (butyrylcholinesterase deficiency) can be described as follows. Butyrylcholinesterase (BChE) deficiency is a metabolic disorder characterized by prolonged apnoea after the use of certain anesthetic drugs, including the muscle relaxants succinylcholine or mivacurium and other ester local anesthetics. The duration of the prolonged apnoea varies significantly depending on the extent of the enzyme deficiency. Also known as: apnea, postanesthetic, susceptibility to, due to BCHE deficiency.