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Effect of continuous cuff pressure regulator on postoperative sore throat in patients undergoing laparoscopic
Renhong He1, Chaomin Wu1, Haiyan Lan1
1Department of Anesthesiology, Lishui People's Hospital, The First Affiliated Hospital of Lishui University, Wenzhou Medical University Lishui Hospital, No. 1188, Liyang Street, Lishui, 323000, Zhejiang, People's Republic of China.
Background:
The aim of this study was to investigate the effect of continuous regulation of laryngeal mask cuff pressure on postoperative sore throat (POST) after laparoscopic cholecystectomy.
Methods:
Patients underwent laparoscopic cholecystectomy were randomly divided into group E or group C in a 1:1 ratio. Laryngeal mask was inserted after successful induction of general anaesthesia. The product of laryngeal mask used in this study was Hope laryngeal mask airway (H-LMA). Group E: the continuous cuff pressure regulator was used to continuously control the cuff pressure of the laryngeal mask at 40 cmH2O. Group C: without the continuous cuff pressure regulator. The primary outcome was the incidence of POST within 24 h of extubation. Secondary outcomes included other postoperative pharyngolaryngeal adverse events 30 min and 24 h after extubation.
Results:
A total of 100 adult patients completed the study. The incidence of POST 30 min and within 24 h of extubation was lower in group E than in group C (12% vs. 36%; P = 0.009) (10% vs. 32%; P = 0.013). The severity of POST 30 min and within 24 h after extubation was also lower in group E than in group C (all P<0.05). The incidence of dysphagia 30 min and within 24 h after extubation was lower in group E than in group C (all P<0.05).
Conclusions:
In conclusion, the incidence of POST can be reduced by continuously controlling the laryngeal mask cuff pressure at 40 cmH2O with the continuous cuff pressure regulator.
Trial Registration:
Chinese Clinical Trial Registry identifier: ChiCTR2400093522. (Principal investigator: Gongchen Duan; registration date: 6 December 2024).
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