To evaluate the clinical effect of streamlined liner of the pharynx airway (SLIPA) in respiratory management compared with LMA-Supreme.

A total of 70 patients from Beijing Friendship Hospital, during April 2009-April 2010, between American Society of Anesthesiologist, Ⅰ-Ⅱ receiving general anesthesia was selected, and divided into SLIPA group and LMA-Supreme group, including 37 patients in SLIPA group and 33 patients in LMA-Supreme group.The difficulty level of insertion, influence on hemodynamics, glottis position observed by fiber optic bronchoscopy, maximum sealing pressure, respiratory parameters and post-operative sore throat rate in 24 hours had been recorded and analyzed.

There was no significant difference in gender, age, BMI and Mallampatti score between the two groups.The result showed no significant difference in first time success rate, operating time, changing in blood pressure and heart rate, and peak airway pressure (P>0.05). There was significant difference in maximum sealing pressure (P<0.05). Group SLIPA (25.7±4.08) cmH₂O(1 cmH₂O=0.098 kPa) vs Group LMA-Supreme (28.5±3.14) cmH₂O, and the glottis position classification, 94.6% of Group SLIPA rated FOS 3-4, while 69.7% of Group LMA-Supreme (P<0.05). The incidence of post-operative throat complications in 24 hours had no significant difference (P>0.05).

SLIPA™ can be safely used in respiratory management of general anesthesia, itsplacement proved to be easy, and the design of the backflow cavity can reduce the risk of backflow and aspiration.

Anesthesia, general; Streamlined liner of the pharynx airway; Laryngeal mask airway; LMA-Supreme; Respiratory management