• Tomohiro Kusunoki, Toshiyuki Sawai, Nobuyasu Komasawa, Yuichiro Shimoyama, and Toshiaki Minami.
• Department of Anesthesiology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan.
• J Clin Anesth. 2016 Sep 1; 33: 37-40.

Study ObjectiveTo examine postoperative sore throat resulting from tracheal intubation stylet removal.DesignProspective cohort study.SettingOperating rooms and hospital ward.PatientsA total of 50 American Society of Anesthesiologists physical status 1 and 2 patients who underwent elective abdominal and/or orthopedic surgery under general anesthesia.InterventionsPatients were allocated to 2 groups: those who developed sore throat postoperatively (ST group) and those who did not (NST group). Comparative analysis of these 2 groups was performed to identify risk factors of the development of sore throat.MeasurementsThe extraction force during stylet removal was measured using a force measuring device. Postoperative sore throat was assessed by an anesthesiologist.Main ResultsNine patients (18%) complained of postoperative sore throat. Increased extraction force (P=.0054; odds ratio, 1.84; 95% confidence interval, 1.20-2.84) was the only significant risk factor for the development of postoperative sore throat. An extraction force of >10.3N was determined as a cutoff for developing postoperative sore throat.ConclusionPostoperative sore throat was significantly related to increased extraction force during stylet removal.Copyright © 2016 Elsevier Inc. All rights reserved.

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