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  • Title: [Potential of succinylcholine-induced neuromuscular blockade by nitrous oxide].
    Author: Tsuchiya A.
    Journal: Masui; 1995 Dec; 44(12):1608-13. PubMed ID: 8583653.
    Abstract:
    To evaluate the potentiating effect of nitrous oxide on the succinylcholine (SCh)-induced neuromuscular blockade, 0.16, 0.20, 0.25 or 0.31 mg.kg-1 of Sch was given during thiamylal-fentanyl anesthesia with or without nitrous oxide, and the evoked electromyograph of hypothenar muscles was measured. ED50 and ED95 in the group receiving nitrous oxide were 0.187 and 0.301 mg.kg-1, and 0.218 and 0.389 mg.kg-1 in the group not receiving nitrous oxide respectively. In the presence of nitrous oxide, the dose-response curve (DRC) was shifted to the left significantly (P < 0.01). By the multiple regression analysis, the degree of the neuromuscular blockade was shown to be affected by dose and nitrous oxide. It was demonstrated that nitrous oxide decreased electromyographically measured SCh requirements by 16.1%. In addition, the dose-effect relationship for SCh-induced neuromuscular blockade varied widely, and gender did not affect the degree of block.
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