• BMC anesthesiology · Apr 2020

    Randomized Controlled Trial

    Effects of benzydamine hydrochloride on postoperative sore throat after extubation in children: a randomized controlled trial.

    • Hyung-Been Yhim, Soo-Hyuk Yoon, Young-Eun Jang, Ji-Hyun Lee, Eun-Hee Kim, Jin-Tae Kim, and Hee-Soo Kim.
    • Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, #101 Daehakno, Jongnogu, Seoul, 03080, Korea.
    • BMC Anesthesiol. 2020 Apr 4; 20 (1): 7777.

    BackgroundPostoperative sore throat (POST) is a common, undesirable result of endotracheal intubation during general anaesthesia. This study aimed to evaluate the effectiveness of benzydamine hydrochloride (BH) spray in reducing the incidence of POST in paediatric patients.MethodsThis randomized, double-blind, prospective study included 142 children 6-12 years of age, who were randomly assigned to receive either BH spray or control. After induction of anaesthesia, direct laryngoscope was placed and BH spray was applied to the upper trachea and vocal cord in the BH group and intubation was performed using a cuffed tube lubricated with normal saline. Intubation in the control group was performed using a cuffed tube lubricated with normal saline without any intervention. The balloon was inflated to a pressure of 20 cmH2O. Patients were extubated after fully awakened and transferred to the post-anaesthetic care unit (PACU), where they were examined for the presence of POST and any adverse events 30 min after arrival to the PACU. Postoperative pain was evaluated using a smartphone application.ResultsSeventy-one patients were allocated to each group. The incidence of POST in the BH group did not differ from that in the control group (control: BH = 35 (49.3%): 42 (59.2%); P = 0.238); postoperative pain was also similar between the groups. Other complications, such as breath holding, secretions, coughing, laryngospasm and desaturation events, did not differ between the groups.ConclusionsApplication of prophylactic BH spray to the vocal cords and upper trachea was not proven to reduce POST in paediatric patients.Trial RegistryNCT03074968 (ClinicalTrials.gov, Feb 26, 2017).

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