Practical Geriatrics ›› 2024, Vol. 38 ›› Issue (8): 808-811.doi: 10.3969/j.issn.1003-9198.2024.08.012

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Effect of low-dose lidocaine combined with propofol on motor evoked potential in elderly patients undergoing intracranial tumor resection

LIU Meijuan, WANG Ning, WANG Dong, LU Fangzhou, LIU Juan   

  1. Department of Anesthesiology (LIU Meijuan, WANG Ning, LU Fangzhou, LIU Juan); Department of Neurosurgery (WANG Dong),Affiliated Brain Hospital of Nanjing Medical University,Nanjing 210029,China
  • Received:2023-11-03 Online:2024-08-20 Published:2024-08-26
  • Contact: LIU Juan,Email: 544607917@qq.com

Abstract: Objective To investigate the effect of low-dose lidocaine combined with propofol on motor evoked potential(MEP) in the elderly patients undergoing intracranial tumor resection. Methods A total of 44 elderly patients receiving intracranial tumor resection monitored by MEP under general anesthesia were enrolled in this study, and were divided into lidocaine group (group L) and control group (group C) by random number table method, with 22 cases in each group.All patients were anesthetized with propofol. The patients in group L received low-dose lidocaine additionally, while the patients in group C was given equal amount of normal saline. The mean arterial pressure(MAP), heart rate(HR), depth of anesthesia, MEP amplitude and latency, propofol dosage and the occurrence of adverse reactions were recorded and compared between the two groups at different time during anesthesia. Results The levels of HR and MAP at different time showed statistically significant differences in group C (P<0.05), while showing no significant differences in group L(P>0.05). During anesthesia, there were no significant differences in MEP amplitude and latency between the two groups (P>0.05), but the dosage of propofol and the incidence rate of adverse reactions in group L were significantly lower than those in group C (P<0.05). Conclusions Low-dose lidocaine has no significant effect on the amplitude and latency of MEP in the elderly patients undergoing surgery for intracranial tumor, which is conductive to maintain hemodynamic stability, reduce intraoperative propofol dosage and the incidence of adverse reactions.

Key words: lidocaine, propofol, aged, intracranial tumors, transcranial electrical stimulation, motor evoked potential

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