The LMA CTrach™, a new laryngeal mask airway for endotracheal intubation under vision: evaluation in 100 patients

• Published in: British journal of anaesthesia : BJA Vol. 96; no. 3; pp. 396 - 400
• Main Authors: Liu, E.H.C., Goy, R.W.L., Chen, F.G.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.03.2006; Oxford University Press; Oxford Publishing Limited (England)
• Subjects: Adult; Aged; Aged, 80 and over; Anesthesia; Anesthesia, General - methods; Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy; Biological and medical sciences; endotracheal; Equipment Design; equipment, laryngeal masks; equipment, LMA CTrach; Female; Fiber Optic Technology - instrumentation; Humans; intubation; intubation, endotracheal; Intubation, Intratracheal - methods; Laryngeal Masks; Laryngoscopy; LMA CTrach; Male; Medical sciences; Middle Aged; intubation, endotracheal; equipment, LMA CTrach; equipment, laryngeal masks; Human; Immunopathology; Prognosis; General surgery; LMA CTrach#; intubation; Mask; AIDS; equipment; laryngeal masks; equipment; endotracheal; Immune deficiency; Infection; Viral disease; Vision; Anesthesia; Larynx; Intubation; Expectation; Direct laryngoscopy; Oxygenation
• ISSN: 0007-0912; 1471-6771
• DOI: 10.1093/bja/ael001

The LMA CTrach™ is a new laryngeal mask system consisting of an LMA CTrach™ Airway with integrated fibreoptic channels, and a detachable LMA CTrach™ Viewer. This system enables viewing of the larynx and aids endotracheal intubation through a laryngeal mask airway. We used and evaluated this system in 100 adult patients undergoing general anaesthesia for elective surgery. Our primary outcomes were the success rates of LMA CTrach™ Airway insertion and endotracheal intubation with this system. We were able to insert the LMA CTrach™ Airway in and to ventilate all 100 patients. We were successful in endotracheal intubation, either under vision or blind, in 96 patients. We were able to view the larynx in 84 patients, but the quality of the best view obtained was very variable. The median (inter quartile range) time for the complete intubation process was 166 (114–233) s. The system allowed nearly continuous ventilation and oxygenation during the process. The LMA CTrach™ system has potential advantages over the LMA Fastrach™ system, including the ability to align the LMA outlet with the larynx and a high first intubation attempt success rate. However, it was difficult to view the larynx with the LMA CTrach™ compared with direct laryngoscopy, and expectations must be moderated.