Hereditary Butyrylcholinesterase deficiency (BCHED) results from the mutations of BCHE gene. Butyrylcholinesterase is an ester hydrolase produced mainly by the liver, hydrolyzes certain short-acting neuromuscular blocking agents, like succinylcholine and mivacurium that are widely used during anesthesia. Patients with BCHED are possibly in danger of postanesthetic apnea.