<qa>  What is the purpose of this study?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. 