Volatile agent use: perception and practice A survey of agent use over a 3‐year period

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Abstract
We calculated the quantity, as MAC hours and MAC hours anaesthetic, of halothane, enflurane and isoflurane, used in this Health District over a 3-year period. Halothane accounted for 77% of anaesthesia in the first year and for 57% in the final year. Overall usage of volatile agents decreased. Fifteen consultants and 19 senior registrars perceived, in a survey of practice, only a change in relative use of volatile anaesthetic agents with a large swing from halothane to both enflurane and isoflurane. Half the anaesthetists stated that the medicolegal consideration was the prime reason for their change. The perceived total demise of halothane does not appear to have been realised, despite individual anaesthetist's perceptions.

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