Utility of the Pentax-AWS without interruption of chest compression: comparison of the Macintosh laryngoscope with the Pentax-AWS in manikin model.

Emergency airway management in suboptimal conditions can result in difficulties in tracheal intubation. The video laryngoscope (Pentax-AWS) has potential advantages during difficult tracheal intubations. According to the 2005 guidelines for cardiopulmonary resuscitation (CPR), all rescuers should minimize interruption of chest compressions. Our hypothesis is that tracheal intubation using the Pentax-AWS is possible without interruption of chest compressions. We tested this using tracheal intubation performed by less experienced medical personnel in a manikin model. Thirty-two less experienced (<10 tracheal intubations) medical interns performed intubation using the Pentax-AWS and the Macintosh laryngoscope in an ALS simulator (Laerdal, Stavanger, Norway) in each of three scenarios. The three scenarios were: (1) normal airway without chest compression, (2) normal airway with continuous chest compression, and (3) difficult airway with continuous chest compression. The success rate, time required to complete tracheal intubation and to visualize vocal cords, POGO (percentage of glottic opening) score, dental compression and the ease of intubation were recorded. All participants performed successful intubation with the Pentax-AWS in the three scenarios. In the two continuous chest compression scenarios (scenarios 2 and 3), the success rate was significantly higher with the Pentax-AWS than with the Macintosh laryngoscope. The Pentax-AWS was an effective tool for endotracheal intubation during chest compression performed by less experienced medical personnel in a manikin model simulating cardiac arrest, both under conditions of normal and difficult airways.

Han SK ，Shin DH ，Choi PC 《-》

Tracheal intubation during chest compressions using Pentax-AWS(®), GlideScope (®), and Macintosh laryngoscope: a randomized crossover trial using a mannequin.

Shin DH ，Choi PC ，Han SK 《-》

Comparison of Pentax-AWS Airwayscope video laryngoscope, Airtraq optic laryngoscope, and Macintosh laryngoscope during cardiopulmonary resuscitation under cervical stabilization: a manikin study.

Komasawa N ，Ueki R ，Kohama H ，Nishi S ，Kaminoh Y ... -  《-》

Tracheal intubation during chest compressions performed by qualified emergency physicians unfamiliar with the Pentax-Airwayscope.

Shin DH ，Han SK ，Choi PC ，Sim MS ，Lee JH ，Park SO ... -  《-》

Tracheal intubation using Macintosh and 2 video laryngoscopes with and without chest compressions.

The aim of the study was to compare the time taken for intubation (TTI) using the Macintosh and 2 video laryngoscopes (VLs) (GlideScope [GVL]; Saturn Biomedical System, Burnaby, British Columbia, Canada, and Airway Scope [AWS]; Pentax, Tokyo, Japan) with and without chest compressions by experienced intubators in a mannequin model. This was a randomized crossover study. Twenty-two experienced physicians who have limited experience in the VLs participated in the study. The TTI using 3 laryngoscopes with and without compressions were compared. Median TTI difference between 2 conditions was only significant in the AWS (1.64 seconds; P = .01). There were no significant differences in the TTI between the Macintosh and the GVL or the AWS during compressions. In a mannequin model, the Macintosh or the GVL was not affected by chest compressions. The TTI using the AWS was delayed by compressions but not clinically significant. Considering the lack of experience, 2 VLs may be useful adjuncts for intubation by experienced intubators during chest compressions.

Kim YM ，Kim JH ，Kang HG ，Chung HS ，Yim HW ，Jeong SH ... -  《-》