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British Journal of Anaesthesia, Vol 78, Issue 2 220-221, Copyright © 1997 by The Board of Management and Trustees of the British Journal of Anaesthesia

SHORT COMMUNICATIONS

The laryngeal mask airway and the tracheal route for drug administration

R. Alexander, H. Swales, A. Pickford and G. B. Smith
Departments of Anaesthetics and Intensive Care, Queen Alexandra Hospital, Southwick Hill Road, Cosham, Portsmouth

We undertook a study to observe if a preformed curved plastic cannula, the Trachojet, could be passed blindly down a laryngeal mask airway into the trachea in 100 anaesthetized patients. Using air aspiration and a fibreoptic scope to confirm placement of the cannula, it passed into the trachea in only 27% of patients. The air aspiration technique used for detecting tracheal cannulation was 100% successful when the cannula was inserted fully. We conclude that it may not be possible to gain access to the trachea with a Trachojet for drug administration if a laryngeal mask airway is used to maintain the patient's airway.
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