The supraglottic airway device (SAD) is currently widely used in patients undergoing general anaesthesia as a method of securing the airway. The usage of SAD does not require the patient to be paralysed prior to insertion, as opposed to an endotracheal tube. Five tests have been recommend to ensure that the SAD can be used for advanced procedure after a blind insertion. These tests however are not confirmed with visual validation and hence the confirmation of optimal position can be misleading. This study is conducted to validate by video laryngoscopy the five recommended tests for confirming the placement and efficacy of a SAD, thus enabling its safe application in institutions with limited availability of video laryngoscopes. Subjects for this study will consist of patients scheduled for procedures under general anaesthesia in the University of Malaya Medical Centre (UMMC) who are amenable to supraglottic airway management.
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To evaluate the accuracy of the performance and placement tests for predicting SAD position in the hypopharynx as confirmed with video laryngoscopy
Timeframe: Intraoperative (from commencement of SAD insertion until confirmation of satisfactory SAD placement via video-laryngoscopy)