Efficacy of ultrasonograpy-guided bilateral superior laryngeal nerve block for polypectomy of vocal cord by laryngoscope
- VernacularTitle:超声引导下喉上神经阻滞用于支撑喉镜下声带息肉摘除术中的效果
- Author:
Yan SHEN
1
;
Yong ZHANG
;
Qian ZHAO
;
Zhaojing FANG
;
Xiaoliang WANG
Author Information
- Keywords: Ultrasonograpy-guided; Bilateral superior laryngeal nerve block; Laryngoscope; Polypectomy of vocal cord
- From: The Journal of Clinical Anesthesiology 2018;34(5):452-455
- CountryChina
- Language:Chinese
- Abstract: Objective To investigate the effect of ultrasonograpy (US )-guided bilateral superior laryngeal nerve (SLN)block by different concentrations of lidocaine combined with intrave-nous anesthesia for polypectomy of vocal cord by laryngoscope.Methods Sixty patients,aged 18-65 years, ASA physical status Ⅰ or Ⅱ, scheduled for elective polypectomy of vocal cord by laryngoscope were divided into 3 groups (n=20 each)using a random number table:US-guided bilat-eral SLN block by 2% lidocaine (group A),S-guided bilateral SLN block by 1% lidocaine (group B), and traditional SLN block by 2% lidocaine (group C).HR,MAP,SpO2and plasma concentration of NE were detected at the time of patients entering the operating room (T0),immediately after intuba-tion(T1),suspensing laryngoscopy (T2),5 min after suspensing laryngoscopy (T3),immediately af-ter extubation(T4),5 min after extubation(T5).Extubation time and side effects such as dysphagia and dyspnea in two hours after extubation were recorded as well.Results HR and MAP in the three groups at T1-T5were increased compared to T0(P<0.05).Compared with group C,HR and MAP in groups A and B were decreased at T1-T5(P<0.05).Plasma concentration of NE of groups A and B was more significantly decreased than group C (P<0.05),and extubation time of groups A and B was less than that of group C (P <0.05 ).Conclusion US-guided bilateral SLN block by 1% lidocaine has definite effect and better comfort level,with stable haemodynamics and less extubation time.
