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Korean Journal of Anesthesiology 1997;33(4):784-787.
DOI: https://doi.org/10.4097/kjae.1997.33.4.784   
Prolonged Apnea after Cesarean Section in Patient with Low Level of Plasma Cholinesterase Activity: A case report.
Il San Tae, Ji Han Rhyu, Kyu Ho Sim, Byung Don Chun, Sin Woo Lee
Succinylcholine-induced prolonged neuromuscular blockade may occur in patients with either a low level of plasma cholinesterase activity or genotypically abnormal form of that enzyme. We experienced a case of succinylcholine-induced prolonged apnea due to a low level of plasma cholinesterase activity. A 31-year-old woman, full term primigravida, underwent cesarean section for breech presentation under general anesthesia. Familial and past medical history were nonspecific and preoperative physical and laboratory findings were within normal range. After operation, delayed apnea was detected and lasted for about one hour. We performed controlled and assisted ventilation for two and half hours. Plasma cholinesterase activity measured 30.00 IU/L (colorimetric method, normal value: 1130~1960 IU/L) at the first postoperative day. She was discharged on 7th postoperative day without any sequelae. From follow-up study after six months, it measured 1.02 U/ml (EIA, normal value: 7~9 U/ml).
Key Words: Complications, apnea; Enzyme, plasma cholinesterase; Neuromuscular relaxants, succinylcholine


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