GlideScope~R videolaryngoscope facilitates nasotracheal intubation

摘要

Increasing evidence indicates the emerging role of GlideScope~R videolaryngoscope (Diagnostic Ultrasound Corporation, Bothell, WA, USA) for both routine and difficult airway management. We recently undertook a clinical evaluation of GlideScope~R videolaryngoscopy (GV) to test its effectiveness for nasotracheal intubation performed by residents in training, comparing it with direct laryngoscopy (DL) using a #3 or #4 Macintosh blade and Magill forceps. After obtaining Ethics Committee approval, we studied 20 patients who required nasotracheal intubation for surgical convenience. After induction of anesthesia and establishing mask ventilation, a pre-warmed, lubricated endotracheal tube (Polar preformed tracheal tube, Portex Inc., Keene, NH, USA) was introduced into either the right or left nares, and either GV (n = 10) or DL (n = 10) was performed. Patients were randomly assigned to either group and allocation concealment was established using sealed envelopes. Under direct visualization, the laryngoscopist directed the tube tip into the glottis. If the tube could not be inserted into the glottis, Magill forceps were used to grasp the tube while an assistant advanced the tube by pushing on the nasal end. Each intubation was performed by trainees who had one to two months of training in airway management.