Efficacy of continuous intravenous infusion of lidocaine on postoperative sore throat after laryngeal mask insertion: a randomized controlled trial

Abstract Background This randomized controlled trial was performed to explore efficacy of continuous intravenous infusion of lidocaine on postoperative sore throat after laryngeal mask insertion. Methods In this prospective trial one hundred and sixty general anesthesia surgery patients (20 to 60 ye...

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Main Authors: Jianxin Jiang, Jimin Wu, Shuqi Shi, Xiaoli Dong, Jiaxiang Yin, Yini Wu
Format: Article
Language:English
Published: BMC 2025-02-01
Series:BMC Anesthesiology
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Online Access:https://doi.org/10.1186/s12871-025-02937-y
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author Jianxin Jiang
Jimin Wu
Shuqi Shi
Xiaoli Dong
Jiaxiang Yin
Yini Wu
author_facet Jianxin Jiang
Jimin Wu
Shuqi Shi
Xiaoli Dong
Jiaxiang Yin
Yini Wu
author_sort Jianxin Jiang
collection DOAJ
description Abstract Background This randomized controlled trial was performed to explore efficacy of continuous intravenous infusion of lidocaine on postoperative sore throat after laryngeal mask insertion. Methods In this prospective trial one hundred and sixty general anesthesia surgery patients (20 to 60 years) using laryngeal mask airway were randomly divided into control group (Group C, saline as placebo), lidocaine gel group (Group LG, lidocaine gel applied to the surface of the laryngeal mask), single intravenous lidocaine group (Group SL, intravenous lidocaine 1.5 mg/kg at induction of anesthesia) and continuous infusion of lidocaine group (Group CL, a bolus of 1.5 mg/kg, followed by an infusion of 2 mg/kg/h until the end of the surgical). The primary outcomes were the incidence and severity of POST at the time of laryngeal mask removal (T1), 2 h (T2), 6 h (T3), and 24 h (T4) after removal. The secondary outcomes included the incidence of adverse events such as hoarseness, cough, and tongue numbness. Result Within 24 h after extubation, the incidence and severity of POST was significantly lower in group CL than that in group C at all time points. In contrast, compared with group C, the incidence and severity of POST in group SL was lower only at T1. The incidence of hoarseness and cough in group CL were significantly lower than that in group C at T1 and T2. In group SL, the incidence of hoarseness and cough was lower than that in the group C only at T1. In group LG, the incidence of tongue numbness was significantly higher than that in group C only at T1, and there were no significant difference in the four groups at the other time points. Conclusion Continuous infusion of lidocaine is effective in reducing the incidence and severity of POST after laryngeal mask ventilation, as well as reducing the incidence of adverse effects such as hoarseness and cough. Trial Registration Chinese Clinical Trial Registry (ChiCTR2300070339,04/10/2023).
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spelling doaj-art-94d940d3272b43e588544ebf7b7d54272025-02-09T12:51:56ZengBMCBMC Anesthesiology1471-22532025-02-012511710.1186/s12871-025-02937-yEfficacy of continuous intravenous infusion of lidocaine on postoperative sore throat after laryngeal mask insertion: a randomized controlled trialJianxin Jiang0Jimin Wu1Shuqi Shi2Xiaoli Dong3Jiaxiang Yin4Yini Wu5Department of Anesthesia, Lishui City People’s HospitalDepartment of Anesthesia, Lishui City People’s HospitalDepartment of Anesthesia, Lishui City People’s HospitalDepartment of Anesthesia, Lishui City People’s HospitalDepartment of Anesthesia, Lishui City People’s HospitalDepartment of Anesthesia, Lishui City People’s HospitalAbstract Background This randomized controlled trial was performed to explore efficacy of continuous intravenous infusion of lidocaine on postoperative sore throat after laryngeal mask insertion. Methods In this prospective trial one hundred and sixty general anesthesia surgery patients (20 to 60 years) using laryngeal mask airway were randomly divided into control group (Group C, saline as placebo), lidocaine gel group (Group LG, lidocaine gel applied to the surface of the laryngeal mask), single intravenous lidocaine group (Group SL, intravenous lidocaine 1.5 mg/kg at induction of anesthesia) and continuous infusion of lidocaine group (Group CL, a bolus of 1.5 mg/kg, followed by an infusion of 2 mg/kg/h until the end of the surgical). The primary outcomes were the incidence and severity of POST at the time of laryngeal mask removal (T1), 2 h (T2), 6 h (T3), and 24 h (T4) after removal. The secondary outcomes included the incidence of adverse events such as hoarseness, cough, and tongue numbness. Result Within 24 h after extubation, the incidence and severity of POST was significantly lower in group CL than that in group C at all time points. In contrast, compared with group C, the incidence and severity of POST in group SL was lower only at T1. The incidence of hoarseness and cough in group CL were significantly lower than that in group C at T1 and T2. In group SL, the incidence of hoarseness and cough was lower than that in the group C only at T1. In group LG, the incidence of tongue numbness was significantly higher than that in group C only at T1, and there were no significant difference in the four groups at the other time points. Conclusion Continuous infusion of lidocaine is effective in reducing the incidence and severity of POST after laryngeal mask ventilation, as well as reducing the incidence of adverse effects such as hoarseness and cough. Trial Registration Chinese Clinical Trial Registry (ChiCTR2300070339,04/10/2023).https://doi.org/10.1186/s12871-025-02937-yAnaesthesiaLaryngeal maskPostoperative sore throatLidocaine
spellingShingle Jianxin Jiang
Jimin Wu
Shuqi Shi
Xiaoli Dong
Jiaxiang Yin
Yini Wu
Efficacy of continuous intravenous infusion of lidocaine on postoperative sore throat after laryngeal mask insertion: a randomized controlled trial
BMC Anesthesiology
Anaesthesia
Laryngeal mask
Postoperative sore throat
Lidocaine
title Efficacy of continuous intravenous infusion of lidocaine on postoperative sore throat after laryngeal mask insertion: a randomized controlled trial
title_full Efficacy of continuous intravenous infusion of lidocaine on postoperative sore throat after laryngeal mask insertion: a randomized controlled trial
title_fullStr Efficacy of continuous intravenous infusion of lidocaine on postoperative sore throat after laryngeal mask insertion: a randomized controlled trial
title_full_unstemmed Efficacy of continuous intravenous infusion of lidocaine on postoperative sore throat after laryngeal mask insertion: a randomized controlled trial
title_short Efficacy of continuous intravenous infusion of lidocaine on postoperative sore throat after laryngeal mask insertion: a randomized controlled trial
title_sort efficacy of continuous intravenous infusion of lidocaine on postoperative sore throat after laryngeal mask insertion a randomized controlled trial
topic Anaesthesia
Laryngeal mask
Postoperative sore throat
Lidocaine
url https://doi.org/10.1186/s12871-025-02937-y
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