• Anesthesia and analgesia · Oct 2017

    Randomized Controlled Trial

    Effect of Endotracheal Tube Cuff Shape on Postoperative Sore Throat After Endotracheal Intubation.

    • Jee-Eun Chang, Hyerim Kim, Sung-Hee Han, Jung-Man Lee, Sanghwan Ji, and Jin-Young Hwang.
    • From the *Department of Anesthesiology and Pain Medicine, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea; †Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Gyeonggido, Republic of Korea; and ‡Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea.
    • Anesth. Analg. 2017 Oct 1; 125 (4): 1240-1245.

    BackgroundAlthough minor, a sore throat after endotracheal intubation can adversely affect patient satisfaction and postoperative function. We compared the effects of 2 endotracheal tube cuff shapes on postoperative sore throat.MethodsOne hundred ninety-one adult patients were included in the study. After induction of anesthesia, patients were randomized to endotracheal intubation with a conventional cylindrical-shaped cuff (Group C, n = 95) or a tapered-shaped cuff (Group T, n = 96). The number of intubation attempts, time to achieve endotracheal intubation, and duration of intubation were recorded. Postoperative sore throat and hoarseness were assessed at 1, 6, and 24 hours after surgery. A 0- to 100-mm visual analog scale was used to evaluate sore throat severity. The primary outcome of this study was the overall cumulative incidence of postoperative sore throat in the 24-hour evaluation period in the 2 groups.ResultsThe overall incidence of postoperative sore throat was lower in Group T than in Group C (32% vs 54%; relative risk = 0.60, 95% confidence interval: 0.43-0.85; P= .003). At 6 hours after surgery, the incidence and severity of postoperative sore throat were lower in Group T compared with Group C (Bonferroni-corrected P< .05). Postoperative hoarseness also occurred less frequently in Group T compared with Group C (19% vs 37%; P= .006). Group T had lower incidence of hoarseness at 1 and 6 hours after surgery than Group C (Bonferroni-corrected P< .05), but the incidence of hoarseness at 24 hours after surgery did not differ between groups.ConclusionsIntubation using an endotracheal tube with a tapered cuff reduced the incidence and severity of postoperative sore throat and the incidence of hoarseness after surgery when compared with an endotracheal tube with a cylindrical cuff.

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