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Anaesthetic breathing systems in the accident and emergency department.
  1. M J McNeill,
  2. R Patey
  1. Anaesthetic Department, Royal Infirmary, Glasgow, Scotland.


    We report two cases where patients with an acute head injury developed hypercapnia as a result of the inappropriate use of the Magill breathing circuit. The Magill circuit is inefficient when used for controlled ventilation because the patient is ventilated with his own expired gas and develops hypercapnia. The suitability of alternative breathing systems are discussed.

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