 The objective of this study is to evaluate the feasibility of dexmedetomidine infusion for oral cancer patients undergoing awake fiberoptic nasal intubation. We hypothesized that a loading dose of intravenous dexmedetomidine before awake fiberoptic nasal intubation for oral cancer patients undergoing general anesthesia will provide adequate sedation and analgesia without respiratory depression and upper airway obstruction. 