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Korean J Anesthesiol > Volume 21(2); 1988 > Article
Korean Journal of Anesthesiology 1988;21(2):318-320.
DOI: https://doi.org/10.4097/kjae.1988.21.2.318   
Changes in Psedocholinesterase Activity Following IV Bolus Administration of Succinylcholine .
Dae Lim Jee, Jung In Bae, Jae Kyu Cheun
Department of Anesthesiology, Keimyung University School of Medicine, Taegu, Korea.
Plasma cholinesterase was assayed during the period immediately following IV bolus injection of succinylcholine 1mg/kg to test the effect of succinylcholine on pseudocholinesterase activity. Twenty healthy adult patients scheduled for elective surgery were studied. The resutls were as follows: The mean value of pre-injection pseudocholinesterase activity was 1124.15 IU/L, and the activity following succinylcholin injection was 1159.55IU/L during fasciculation, 982.70 at 1 min, 936.60 at 3 min, 891.25 at 5 min, 926.80 at 7 min, 1015.45 at 10 min, and 1007.70 at 15 min. It was concluded that the tendency to increase pseuducholinesterase activity during fasciculation seems to be due to choline, the metabolite of succinylcholine, however the cause of the significant decrease in pseudocholinesterase activity after fasciculation is uncertain. The only suggested mechanism is due to the inhibition of pseudocholinesterase by succinylcholine and its metabolites.
Key Words: Muscle relaxant; Succinylcholine; Pseudocholinesterase activity
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