Efficacy of Coopdech videolaryngoscope: Comparisons with a Macintosh laryngoscope and the Airway Scope in a manikin with difficult airways
Department of Anesthesiology, Dokkyo Medical University, Koshigaya Hospital, 2-1-50 Minamikoshigaya, Koshigaya, Saitama, 343-8555, Japan.Journal of Anesthesia (Impact Factor: 1.18). 06/2012; 26(4):617-20. DOI: 10.1007/s00540-012-1380-z
We studied the efficacy of the Coopdech videolaryngoscope Portable VLP-100, by comparing it with a Macintosh laryngoscope, and another videolaryngoscope, the Airway Scope (AWS), in a manikin with four simulated difficult airways. In a randomized, crossover design, each of 50 residents inserted the three devices, in turn, and graded the view of the glottis at laryngoscopy. Time to see the glottis, time to intubate the trachea, and the success rate of tracheal intubation (within 120 s) were recorded. In all situations, the AWS provided a significantly shorter time to see the glottis. In a manikin with tongue edema, the AWS was associated with a significantly higher success rate of intubation than the VLP-100 and the Macintosh laryngoscope (P < 0.05). In a manikin with cervical spine rigidity or pharyngeal obstruction, the AWS and the VLP-100 provided significantly higher success rates of intubation than the Macintosh laryngoscope (P < 0.05). In a manikin with laryngospasm, no one could intubate the trachea using any device. Our results indicate that, in patients with difficult airways, the videolaryngoscopes (VLP-100 and AWS) would provide higher success rates of tracheal intubation than the Macintosh laryngoscope, but the VLP-100 may be inferior to the AWS.
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ABSTRACT: Purpose: American Heart Association (AHA) 2010 cardiopulmonary resuscitation guidelines recommend high-quality chest compressions (minimum interruption, a pace >100 compressions/min, and a depth more than 5 cm). They propose minor changes for pregnant women: manual left deviation of the uterus or a left-lateral incline of 27°-30° to alleviate pressure on the inferior vena cava. We examined the performance of the Pentax-AWS Airwayscope (AWS) and Macintosh laryngoscope (McL) for airway management during chest compressions on a 27° left-lateral tilt (27 LLT) operating table. Methods: The study included 18 novice doctors in our anesthesia department. They performed tracheal intubation on a manikin positioned on a 27 LLT operating table using the AWS or McL with or without chest compressions. We measured the intubation time and success rate for tracheal intubation. Results: Intubation success rate with the McL decreased with chest compressions compared to without chest compressions (12/18 vs. 18/18, P < 0.05). Intubation time with the McL was lengthened with chest compressions compared to without chest compressions (18.9 ± 4.0 s vs. 11.1 ± 1.0 s, P < 0.05). Intubation success rate was the same for the AWS with and without chest compressions (18/18 in both cases), and intubation time did not increase significantly without compressions compared to with compressions (11.6 ± 1.4 s vs. 12.6 ± 1.2 s, NS). Conclusions: The AWS is an effective tool for airway management during chest compressions in 27 LLT in a manikin, suggesting that the AWS may be a useful device for airway management during maternal resuscitation.
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ABSTRACT: The aim of this study was to evaluate the suitability of the KINGVISION videolaryngoscope for tracheal intubation. Endotracheal intubation was performed using the KINGVISION in 50 patients undergoing general anesthesia. We compared the percentage of glottic opening score between Coopdech Videolaryngoscope Portable VLP100 and the KINGVISION with staff anesthesiologist and novice personnel. The time to complete instrumentation and optimizing procedures were also recorded. The KINGVISION allowed visualization of the glottis and successful intubation in all patients, including 11 patients with difficult airway. There were no differences in the time to intubation between staff anesthesiologist and novice personnel. Furthermore, percentage of glottic opening score was higher with KINGVISION than with Coopdech Videolaryngoscope Portable VLP100 among staff anesthesiologist and novice personnel. The KINGVISION could be an effective aid to airway management in surgical patients.
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