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OBJECTIVE	To compare the efficacy of laryngeal mask airway-Supreme ( TM ) versus common laryngeal mask airway in children with general anesthesia .
METHODS	With local research ethics committee 's approval and written informed parental consent , 100 children were randomly divided into groups L ( size 2.0 common laryngeal mask airway ) and S ( size 2.0 laryngeal mask airway-Supreme ( TM ) ) according to random number ( n = 50 each ) .
METHODS	After anesthesia induction , a common laryngeal mask airway or laryngeal mask airway-Supreme ( TM ) was inserted and mechanically ventilated .
METHODS	Time and ease for insertion , insertion success rate , airway leak pressure , success rate and ease of disposal sputum collecting tube insertion in group S , quality of airway during anesthetic maintenance , abdominal circumference changes and complications within 24 h post-operation were measured .
RESULTS	Compared with group L , abdominal circumference increased less in group S ( 0.90 0.35 vs 0.43 0.18 cm , n = 46 , P < 0.01 ) .
RESULTS	No significant inter-group differences existed for other measurements .
RESULTS	Disposal sputum collecting tube was successfully placed in group S ( 100 % ) .
CONCLUSIONS	In children with mechanical ventilation , laryngeal mask airway-Supreme ( TM ) can be effectively applied to maintain a good airway .
CONCLUSIONS	And the incidence of gastric insufflation is lower .
CONCLUSIONS	It is particularly useful for those requiring evacuation of gastric contents during general anesthesia .

