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Anesthesiology Research and Practice
Volume 2016 (2016), Article ID 7318595, 8 pages
Clinical Study

Intubation Success through I-Gel® and Intubating Laryngeal Mask Airway® Using Flexible Silicone Tubes: A Randomised Noninferiority Trial

1Department of Anaesthesia and Intensive Care Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh 160012, India
2Department of Anesthesia and Perioperative Medicine, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada N6A 5A5

Received 31 December 2015; Revised 12 May 2016; Accepted 1 June 2016

Academic Editor: Kouichiro Minami

Copyright © 2016 Latha Naik et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Introduction. The study aims to test whether flexible silicone tubes (FST) improve performance and provide similar intubation success through I-Gel as compared to ILMA. Our trial is registered in CTRI and the registration number is “CTRI/2016/06/006997.” Methods. One hundred and twenty ASA status I-II patients scheduled for elective surgical procedures needing tracheal intubation were randomised to endotracheal intubation using FST through either I-Gel or ILMA. In the ILMA group (), intubation was attempted through ILMA using FST and, in the I-Gel group (), FST was inserted through I-Gel airway. Results. Successful intubation was achieved in 36.67% (95% CI 24.48%–48.86%) on first attempt through I-Gel () compared to 68.33% (95% CI 56.56%–80.1%) in ILMA () (). The overall intubation success rate was also lower with I-Gel group [58.3% (95% CI 45.82%–70.78%); ] compared to ILMA [90% (95% CI 82.41%–97.59%); ] (). The number of attempts, ease of intubation, and time to intubation were longer with I-Gel compared to ILMA. There were no differences in the other secondary outcomes. Conclusion. The first pass success rate and overall success of FST through an I-Gel airway were inferior to those of ILMA.