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  • Title: A comparison of edrophonium and neostigmine for the antagonism of atracurium-induced neuromuscular block.
    Author: Lavery GG, Mirakhur RK, Gibson FM.
    Journal: Anesth Analg; 1985 Sep; 64(9):867-70. PubMed ID: 3161421.
    Abstract:
    Edrophonium, 0.5 mg/kg, or neostigmine, 0.05 mg/kg, was administered to groups of 20 patients each, for antagonism of atracurium-induced block at varying degrees of spontaneous recovery. Neuromuscular block was studied using train-of-four (TOF) stimulation. Adequate reversal of neuromuscular block (TOF ratio of 0.7) was achieved in all patients given neostigmine but only in 13 of the 20 given edrophonium. The onset of action of edrophonium (23 sec) was significantly more rapid than that of neostigmine (40 sec), as was the time taken to attain a TOF ratio of 0.7 in those in whom adequate antagonism was achieved (68 sec for edrophonium and 246 sec for neostigmine). Five of the seven patients in the edrophonium group who failed to be reversed adequately had shown three or fewer twitches to a TOF stimulation. It is concluded that edrophonium in a dose of 0.5 mg/kg does not consistently antagonize neuromuscular blockade induced by atracurium, particularly if all four responses to a TOF stimulation are not elicited prior to antagonism of the block.
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