A 5 year old boy suffering from Duchenne muscular dystrophy has to undergo tendon lengthening procedure. The most approp-riate anaesthetic would be:
Induction with intravenous thiopentone and N20; and halothane for maintenance Induction with intravenous suxamethonim and N20; and oxygen for maintenance Induction with intravenous suxamethonium and N20; and halothane for maintenance Inhalation induction with inhalation halothane and N20; oxygen for maintenance