Role of pre-incisional external bilateral ultrasound guide glossopharyngeal nerve block with diluted bupivacaine mixture in pain management in oropharyngeal surgery: A randomized control trial.

Unlabelled: The glossopharyngeal nerve block (GNB) was evaluated for pain control together with the magnitude of obtunded gag reflex as a useful clinical sign of GNB.

Methods: 400 patients scheduled for oropharyngeal surgery were randomly allocated into 2 groups (200 patients in each group), Group1 patients received bilateral GNB with 0.125% bupivacaine, 0.