Comparison of the applicability and safety of the cobra perilaryngeal airway and the laryngeal mask airway classic in anesthetized and paralyzed patients

ABSTRACT

To compare two supraglottic airway devices [SAD], laryngeal mask airway classic [LMA- Classic] and cobra perilaryngeal airway [Cobra-PLA], in terms of insetion characteristics, sealing pressure, hemodynamic effects and post-operative complications. Prospective study. Okmeydani Teaching and Research Hospital, Istanbul, Turkey. A total of sixty patients were included in our study. Patients were randomly divided into two groups as Group Cobra-PLA and Group LMA-Classic.upon successful insertion, the cuff was inflated with air to a pressure of 60 cm H[2]O by using manometer. A maximum of two attempts were made to insert the SAD. In case of failure, orotracheal intubation was the SAD devices, the duration of insertion, the number of attempts, the insertion complications, ventilation parameters, hemodynamic parameters and postoperative adverse effects were recorded for each group. In Group Cobra-PLA and Group LMA-Classic, the SAD were successfully inserted respectively in 26 [86.7%] and 28 [93.3%] patients. The duration of insertion was shorter in group LMA-Classic [p < 0.05]. The seal pressure was significantly higher in group Cobra-PLA [p < 0.001]. Bleeding was less frequently observed in patients with LMA-Classic group [p < 0.05]. Both SAD can safely be used as an alternative to endotracheal intubation. According to the results of our study, LAM-Classic seems to be a more practical device regarding the insertion characteristics and the postoperative complications; however, it should be noted that sealing pressure is higher in Cobra-PLA