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Canadian Journal of Anesthesia, Vol 36, 530-532, Copyright © 1989 by Canadian Anesthesiologists' Society

ARTICLES

Malignant hyperthermia and the clean machine

TT McGraw and TP Keon
Department of Anaesthesia, University of Pennsylvania, Philadelphia.

Following use with halothane, ten anaesthestic machines were sampled using infrared analysis for halothane contamination. Baseline measurements of halothane were made in the room and at the machine's common gas outlet. Five per cent halothane with four litres per minute oxygen flow was delivered for ten minutes into a scavenged breathing circuit. Halothane was then discontinued, an oxygen flow rate of 12 litres per minute was begun, and continuous measurements were made until the halothane concentration became undetectable. Baseline measurements of the rooms and anaesthestic machines ranged from 0 to 0.8 parts per million. Following the oxygen flow, the halothane concentration decreased to undetectable levels within six minutes in all ten machines.


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H. Prinzhausen, M. W. Crawford, J. O'Rourke, and G. C. Petroz
Preparation of the Drager Primus anesthetic machine for malignant hyperthermia-susceptible patients: [La preparation de l'appareil a anesthesie Drager Primus pour les patients susceptibles d'hyperthermie maligne].
Can J Anesth, September 1, 2006; 53(9): 885 - 890.
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Copyright © 1989 by the Canadian Anesthesiologists' Society.