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Canadian Journal of Anesthesia, Vol 10, 241-243, Copyright © 1963 by Canadian Anesthesiologists' Society
1 Hôpital Général, Université de Witwatersrand, Johannesburg, Afrique du Sud
The place of hexamethylene-l, 6-biscarbaminoylcholine (Imbretil) as a relaxant in anaesthesia is controversial, particularly after reports1,2 appeared which left doubt as to its reversibility in as consistent and conclusive a manner as is the case with tubocurarine. This preliminary report describes the effectiveness of hexafluorenium (Mylaxen) in blocking the depressant action of hexacarbacholine on the respiration in 18 patients, and in antagonizing the effect of hexabiscarbacholine at varying times up to approximately 15 minutes after administration of hexabiscarbacholine in a further 7 patients. When this antagonism became attenuated neostigmine reversibility became apparent. This antagonism, and similarly a tachycardia which was constantly observed after hexafluorenium administration, cannot be explained by the current theories on the mode of action of these drugs.
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