Abstract:Objective To investigate the safety and effectiveness of the application of the flexible shaped-lightwand in nasotracheal intubation. Methods A total of 90 patients who received tonsillectomy or vocal polypectomy under general anesthesia at E.N.T.Department from June 2018 to May 2019 were selected.All the patients were older than 18 years,ASA grade was Ⅰ or Ⅱ,Mallampati grade was Ⅰ to Ⅲ,BMI ≤32.The patients were divided into flexible shaped-lightwand group(group F),traditional lightwand group(group S) and laryngoscope group(group L) randomly (n=30,each).The number of successful intubation for the first time,the total number of successful intubation,the first intubation time,the bleeding and injury of mouth,nose,pharyngeal mucosa and patients′ teeth during intubation were recorded,the blood pressure and heart rate were observed and recorded before anesthesia induction,after anesthesia induction,during the first intubation and 2 minutes after intubation.The adverse reactions such as sore throat and hoarseness were followed up after operation. Results The total success rate of intubation was 100%in all the three groups.The differents in success rate of the first intubation between group F (96.67%),group S (93.33%) and group L (76.67%) was statistically significant (P<0.05),and the highest in group F;the difference in the first intubation time between the three groups was statistically significant (P<0.01),and the shortest in group F;the incidence of complications during and after operation in group F (3.33%),group S (20.00%) and group L (30.00%) was statistically significant (P<0.05),and the lowest in group F. ConclusionThe flexible shaped-lightwand used in nasotracheal intubation has the advantages of simple operation,fast and safe intubation,high success rate and stable hemodynamics during intubation.