Comparison of the streamlined pharynx airway liner with the conventional laryngeal mask airway for airway management during general anesthesia

Abstract

Objective To compare the performance of the streamlined pharynx airway liner (SLIPA~(TM)) with the conventional laryngeal mask airway(LMA) for airway management in minor surgery under general anesthesia. Methods Sixty fasted adult patients with ASA status Ⅰ～Ⅱ were randomly designed to establish SLIPA~(TM) airway (SLIPA~(TM) group) or LMA airway(LMA group) for airway management during anesthesia. Article airway handling, pharynx sealing, ventilation maintenance and adverse reactions with SLIPA~(TM) group and LMA group were assessed. Results SLIPA~(TM) had comparable total rate of successful insertion and airway placement difficulty to LMA(P>0.05). Maximum seal pressure was (22±5) cm H_20 and (24±6) cm H_2O in SLIPA~(TM) group and LMA group (P>0.05), respectively. A leak was noticed in 20% and 16.7% of patiemts in LMA group when patients' lungs were ventilated using intermittent positive pressure ventilation mode after airway mask placment and during surgery, and 3.3% and 0 in SLIPA~(TM) group (P<0.05). The incidence of sore trauma was similar in both groups. Conclusion SLIPA~(TM) is an acceptable and alternative method for LMA, exerting similar clinical performance with easier placement, less sore trauma and more stable IPPV during minor surgery. Key words: SLIPA~(TM); LMA; Airway management