Table of Contents
ISRN Anesthesiology
Volume 2012, Article ID 237949, 5 pages
Research Article

Evaluation of Airway Scope at Improving the Success Rate of the First Intubation Attempt by Nonexpert Physicians: A Randomized Crossover Manikin Study

1Department of Anesthesiology, Sakai Hospital, Faculty of Medicine, Kinki University, Sakai, Japan
2Division of Cardiology, National Cardiovascular Center, Suita, Japan
3Department of Biostatistics, Kyoto University School of Public Health, Kyoto, Japan
4Division of Cardiology, Shizuoka General Hospital, Shizuoka, Japan

Received 26 September 2012; Accepted 11 October 2012

Academic Editors: S. Baris and E. A. Ochroch

Copyright © 2012 Haruyuki Yuasa 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.


Purpose. The aim of the study was to assess the performance of Airway Scope (AWS) on the first attempt at intubation in manikins by nonexpert physicians. Methods. A randomized crossover trial involving seven scenarios. Participants: residents of a cardiovascular hospital. In group A, the AWS procedure was performed first followed by Machintouch Laryngoscopy (ML), while in group B the ML procedure was performed first and then the AWS. The primary outcome assessed was the success of first intubation attempt in a normal scenario. The secondary outcome assessments were success in six other scenarios, and also elapsed time and dental trauma caused in all scenarios. Results. There were 34 participants. All AWS-assisted intubations were successfully completed, but one ML-assisted intubation failed in the normal scenario ( ). The outcomes achieved by the AWS in scenarios involving cervical immobilization ( ), tongue edema ( ), pharyngeal obstruction ( ), and jaw trismus ( ) were superior to those obtained with the ML. Conclusions. Use of AWS-assisted intubation in manikin scenarios results in a significantly high intubation success rate on the first attempt by nonexpert physicians. These findings suggest this new device will be useful for nonexpert physicians in emergency situations.