With the continuous development of microsurgery, supporting laryngoscopy acoustic polyp removal has become a very mature clinical operation. The operation has small trauma, short operation time, fast turnover and needing to wake up as soon as possible, but the supporting laryngoscopy has great stimulation to the throat and great hemodynamic fluctuations. This study aims to evaluate the efficacy of ultrasound guided superior laryngeal nerve block as an adjuvant to general anesthesia during vocal cord polypectomy by laryngoscopy.
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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
The degree of severity of sore-throat at just before extubation (bucking on the ETT)
Timeframe: At just before extubation (bucking on the ETT).
The degree of severity of sore-throat at the time point of 10 minutes after extubation
Timeframe: At the time point of 10 minutes after extubation.
The degree of severity of sore-throat at the time point of 1 hour after extubation
Timeframe: At the time point of 1 hour after extubation.
The degree of severity of sore-throat at the time point of 4 hour after extubation
Timeframe: At the time point of 4 hour after extubation.
The degree of severity of cough at the time point of 30 minutes following extubation
Timeframe: At the time point of 30 minutes following extubation.
The degree of severity of cough at the time point of 2 hours following extubation
Timeframe: At the time point of 2 hours following extubation.
The degree of severity of cough at the time point of 4 hours following extubation
Timeframe: At at the time point of 4 hours following extubation.
The degree of severity of cough at the time point of 24 hours following extubation
Timeframe: At the time point of 24 hours following extubation.
The degree of severity of hoarseness at the time point of 30 minutes following extubation.
Timeframe: At the time point of 30 minutes following extubation.
The degree of severity of hoarseness at the time point of 2 hours following extubation.
Timeframe: At the time point of 2 hours following extubation.
The degree of severity of hoarseness at the time point of 4 hours following extubation.
Timeframe: At the time points of 4 hours following extubation.
The degree of severity of hoarseness at the time point of 24 hours following extubation.
Timeframe: At the time point of 24 hours following extubation.