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- D Lister, G M Hall, and J N Lucke.
- Br J Anaesth. 1976 Sep 1;48(9):831-8.
AbstractThe effects of the establishment of an adrenergic blockade on suxamethonium-induced porcine malignant hyperthermia (MH) were investigated in Pietrain pigs. Six animals were fed reserpine 10 mg daily for 7 days and then challenged with suxamethonium. Three survived but the remainder developed fatal MH. In a further study of 10 pigs, either phentolamine 40 mug/kg/min or propranolol 50 mug/kg/min were administered for 30 min before suxamethonium stimulation and continued for the duration of the experiment. The five year beta-blocked pigs all became hyperthermic and died whereas the phentolamine-treated group survived. However, both alpha adrenergic blockade and successful reserpinization failed to prevent the abnormal muscle response to the first dose of suxamethonium.
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