Intranasal dexmedetomidine as a sedative premedication for patients undergoing suspension laryngoscopy: A randomized double-blind study

The date includes many items. Including: 1、Baseline Characteristic Data(Age Weight Height Sex ASA status ) 2、Duration time Duration from intranasal drug administration to arrival at operating room Duration from intranasal drug administration to anesthesia intubation Duration of anesthesia Duration of surgery 3、Modified OAA S scores（Before intranasal drugs At Pre-induction After extubation） Anxiety scores (Before intranasal drugs At Pre-induction) Satisfaction scores 4、Bradycardiac episode Tachycardiac episode Hypotensive episode Hypertensive episode 5、Predicted Effect-site Concentrations of Propofol Predicted Effect-site Concentrations of Remifentanil 6、Anesthesia recovery time 7、HR （Before Intranasal Drugs At Pre-induction） 8、Number of Participants With Anxiety Score >2 Number of participants with VAS >50 Number of participants with postoperative nausea Number of participants with Postoperative Vomiting Number of participants with Postoperative Shivering Number of participants with Intra-operative Awareness 9、 Visual Analogue Scale (VAS)