• Yuenong Zhang, Zhiwen Zeng, Guangwen Xiao, Weiqiang Zhang, Weixiong Lin, and Jingdan Deng.
• First Department of Anesthesiology, People's Hospital of Meizhou City, Meizhou, Guangdong Province, China.
• BMC Anesthesiol. 2019 Nov 15; 19 (1): 211.

BackgroundWe aimed to evaluate a modified endotracheal tube containing upper and lower balloons for anesthetic administration among patients undergoing laparoscopic cholecystectomy.MethodsNinety patients scheduled to undergo laparoscopic cholecystectomy were randomly allocated to 3 equal groups: group A (conventional tracheal intubation without endotracheal anesthesia); B (conventional tracheal intubation with endotracheal anesthesia); and C (tracheal intubation using a modified catheter under study). Blood pressure, heart rate, angiotensin II level, blood glucose level, airway pressure before anesthesia (T1) were measured immediately after intubation (T2), 5 min after intubation (T3), and immediately after extubation (T4). The post-extubation pain experienced was evaluated using the Wong-Baker Face Pain scale. Adverse reactions within 30 min after extubation were recorded.ResultsSystolic blood pressure, diastolic blood pressure, angiotensin II, and blood sugar level in group C at T2, T3 and T4, and heart rate at T2 and T4 were significantly lower than those in group A (P < 0.05); systolic blood pressure and blood sugar at T4, and angiotensin II levels at T2, T3, and T4 were significantly lower than those in group B (P < 0.05). Patients in group C reported the lowest post-extubation pain (P < 0.05 vs. Group A), and the lowest incidence of adverse events such as nausea, vomiting, and sore throat than that in groups A and B (P < 0.05).ConclusionThe modified endotracheal anesthesia tube under study is effective in reducing cardiovascular and tracheal stress response, and increasing patient comfort, without inducing an increase in airway resistance.Trial RegistrationThe clinical trial was retrospectively registered at the Chinese Clinical Trial Registry with the Registration Number ChiCTR1900020832 at January 20th 2019.

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