Canadian Anaesthetists' Society journal
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The occurrence of an airway obstruction with a cuffed flexometallic tracheal tube is reported. The cause of the obstruction is attributed to internal herniation of the distal extremity of the tube secondary to diffusion of anaesthetic gases into the tracheal tube cuff and subsequently between the two layers of the distal extremity of the tube. Methods to avoid overdistension of the cuff volume are described.
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In decerebrate rabbits which were mechanically ventilated, both Althesin and thiopentone depressed preganglionic sympathetic activity and arterial pressure. Conduction through central baroreceptor pathways, tested by depressor nerve stimulation, showed a selective inhibition of the heart rate response by both agents. Effects were similar with Althesin injection in animals which were lightly anaesthetized with pentobarbitone. Depression of the arterial pressure and sympathetic components of the baroreceptor reflex was apparent only with high doses.
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Case Reports
Acute febrile reaction complicating spinal anaesthesia in a survivor of malignant hyperthermia.
A case report is presented of a survivor of malignant hyperthermia who suffered an acute febrile episode during the course of a spinal anaesthetic. It is suggested that the extreme degree of intra-operative anxiety may have triggered this event.