Conditions: Benign Neoplasm of Vocal Fold - Glottis
Keywords: intranasal dexmedetomidine early recovery suspension laryngoscopy
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 81
Healthy volunteers: no

Brief summary:
Most patients with preoperative varying degrees of stress, anxiety, which makes the stress response in patients and affect the normal conduct of anesthesia and surgery.The sympathetic system hyperexcitability prone to cause adverse cardiovascular events and affect postoperative recovery. However, phenobarbital, as the traditional premedication, has less sedative, weak anxiolytic and other shortcomings. Midazolam accompanied by inhibition of respiration,excessive sedation, easily induced delirium,prolonged recovery time and so on. Dexmedetomidine is a highly selective α2-adrenergic receptor agonist, it has sedative, anxiolytic, no inhibition of respiration, and also colorless, odorless, non-mucosal stimulation, nasal drip ease of administration, patient acceptance, comfortable. Therefore, dexmedetomidine as premedication has certain advantages. The purpose of this research is to study sedative effect, safety and the impact of anesthesia recovery period of intranasal dexmedetomidine premedication for suspension laryngoscopy.

Detailed description:
All patients received intranasal dexmedetomidine (1μg.kg-1) or placebo at approximately 45 min before induction of anesthesia.The study drug was prepared in a 1-ml syringe.An equal volume of dexmedetomidine or placebo was dropped into each nostril by a blinded research assistant in the supine position.Automatic sphygmomanometer measure blood pressure.Oxygen saturation and heart rate were measured by a pulse oximeter. Respiratory rate, sedation score and anxiety levels regularly assessed. Patients with general anesthesia, suspension laryngoscopy surgery and postoperative care, standard monitoring are unified.

Arms:
arm 1: intranasal dexmedetomidine arm 2: intranasal saline

Interventions: intervention 1: Dexmedetomidine intervention 2: placebo
Intervention descriptions: intervention 1: intranasal dexmedetomidine 1μg.kg-1，0.9% saline was added to make a final volume of 1 mL.all patients received intranasal medication at approximately 45-60 min before induction of anesthesia. intervention 2: 0.9% saline 1 mL all patients received intranasal medication at approximately 45-60 min before induction of anesthesia.

Protocol document: