Vocal cord polyp
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: The patient who are ASAI and ready for undergoing laryngeal microsurgery. At the same time the age of the patient must between 18 to 60 and the BMI must be less than 30.
Exclusion criteria
Exclusion criteria: The patient complicated with 1. Difficult intubation; 2. Hypertension; 3. Heart and lung disease; 4. Consumption of alpha 2 adrenergic agonist or Antagonist recently, will be excluded.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Narcotrend Index;heart rate;Target concentration of propofol;Blood Pressure; | — |
Secondary
| Measure | Time frame |
|---|---|
| Target concentration of remifentani; | — |
Countries
China