Issn Print: 0265-0215

Publication Date: 2006/06/01


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Comparison of the new perilaryngeal airway (CobraPLATM) with the laryngeal mask airway (LMATM) by an anesthesia beginner: A-950

N. Kanaya; K. Kazui; N. Kamada; N. Hirata; M. Nakayama; A. Namiki

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Background and Goal of Study: The Laryngeal Mask Airway (LMATM) is a well established supraglottic airway that is frequently used when endotracheal intubation is not required(1). The perilaryngeal airway (CobraPLATM) is a novel cuffed airway device. Actually, it is difficult for most of anesthesiologists to evaluate LMATM and CobraPLATM equally because they have enough experience in using LMA(2). Therefore, we compared the CobraPLATM with the LMATM in regard to insertion time, airway sealing pressure and recovery characteristics by anesthesia beginners.
Materials and Methods: Forty ASA physical status I-II patients having minor elective orthopedic surgery were randomized to receive LMATM or CobraPLATM. Two of the investigators, all of whom had <2yr clinical anesthesia and hardly experience in LMATM, were selected to insert the airways; these investigators were trained with 5 CobraPLATM and LMATM insertions before the study started. Anesthesia was induced with propofol, and either airway was inserted. We measured insertion time, airway sealing pressure, number of attempts. Postanesthetic complications (bleeding, sore throat, dysphonia, and dysphagia) were also evaluated. Results were presented as means ± SD or actual numbers; P < 0.05 was considered statistically significant.
Results and Discussions: Patients characteristics were almost identical between the two airway groups. Insertion time was significantly shorter with CobraPLATM than LMATM. Airway sealing pressure was significantly greater with CobraPLATM than LMATM. Number of attempts, and postanesthetic complications were similar in both groups.
Conclusion(s): CobraPLATM has better insertion characteristics and airway sealing capabilities than LMATM.
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