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Anaesthesia. 1990 Feb;45(2):113-7.

The Bain, ADE, and Enclosed Magill breathing systems. A comparative study during controlled ventilation.

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Magill Department of Anaesthetics, Westminster Hospital, London.


The Enclosed Magill, Humphrey ADE and the Bain breathing systems are all used for controlled ventilation of the lungs. This study compares the three systems in vitro with a lung model and in clinical practice. No difference was observed, with ventilatory variables commonly used in clinical practice, between the Bain and the ADE, while significantly lower end-tidal carbon dioxide values were observed with the Enclosed Magill (about 7%). Lower fresh gas flows can be used under these circumstances to maintain normocapnia with the Enclosed Magill than either the Bain or the Humphrey ADE.

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