Awake light-aided blind nasal intubation: prototype device

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Awake light-aided blind nasal intubation: prototype device O Nofal British Journal of Anaesthesia Volume 104, Issue 2, Pages 254-259 (February 2010) DOI: 10.1093/bja/aep367 Copyright © 2010 The Author(s) Terms and Conditions

Fig 1 The light-aiding device which consisted of a tightly inserted small light bulb (1) into a nasogastric (NG) tube (2) after welding the bulb to an electric wire passing through the NG tube. The wire is connected to (3) an AC–AD adaptor. The emitted light (4) is in a forward and in a lateral direction. British Journal of Anaesthesia 2010 104, 254-259DOI: (10.1093/bja/aep367) Copyright © 2010 The Author(s) Terms and Conditions

Fig 2 SGTA device in the form of suction catheter injected with coloured solution (1) representing LA. The tip of the catheter is closed (2) and its nearby distal part is punctured for a distance of 15–17 cm. The tip and the punctured parts of the catheter are wrapped by the cotton gauze that will be soaked (coloured patches) with the injected solution (3). British Journal of Anaesthesia 2010 104, 254-259DOI: (10.1093/bja/aep367) Copyright © 2010 The Author(s) Terms and Conditions

Fig 3 ET light-aiding unit shows a circumscribed glow at the lateral side of the neck (1) at the level of thyroid prominence (pyriform fossa) that cannot be pushed more against the lateral pharyngeal wall. The arrow 2 points to the cannula used for cricothyroid topical anaesthesia. British Journal of Anaesthesia 2010 104, 254-259DOI: (10.1093/bja/aep367) Copyright © 2010 The Author(s) Terms and Conditions

Fig 4 ET light-aiding unit had entered the glottic opening, showing a well-circumscribed glow (1) in the anterior neck below the thyroid prominence (2) and begins to disappear below the sternal notch. The arrow 3 points to the cannula used for cricothyroid topical anaesthesia. British Journal of Anaesthesia 2010 104, 254-259DOI: (10.1093/bja/aep367) Copyright © 2010 The Author(s) Terms and Conditions

Fig 5 ET light-aiding unit shows a well-circumscribed glow (1) in the anterior neck of a child just below the thyroid prominence that proved to be oesophageal and not tracheal (false glow). British Journal of Anaesthesia 2010 104, 254-259DOI: (10.1093/bja/aep367) Copyright © 2010 The Author(s) Terms and Conditions

Fig 6 The graphic presentation of the heat generated (mean value) at the light bulb of the device fixed at the tip of the ET with and without oxygen flow of 6 litre min−1. British Journal of Anaesthesia 2010 104, 254-259DOI: (10.1093/bja/aep367) Copyright © 2010 The Author(s) Terms and Conditions