Brain Shift During Successful Implantation of the Electrode at One Time Following Bilateral Deep Brain Stimulation Surgery

Abstract

Objective: To determine how brain shift during successful implantation of electrode at one time influences the electrode tracts and lead tips' displacement. Methods: A retrospective study was performed of 155 patients undergoing bilateral deep brain stimulation (DBS) from February 2017 to May 2019. 145 patients with successful implantation of electrode at one time was included. The electrode tracts and lead tips' displacement on each side was compared and the relationship between the volume of intracranial air (ICA) and change of lead tips' deviation from 2 hours to 1 week postoperatively was analyzed. Results: Brain shift caused electrode tracts posterior curving postoperatively and then to be straight after ICA resolved. There were significant differences in deviations of lead tips between 2 hours and 1 week postoperatively in total displacement (p 25 cm3 (p=0.3515) groups was not significant, while was significant between ICA volume 25 cm3 groups (p=0.0062). Conclusion: Brain shift can cause the electrode tracts posterior curving and lead tips' deviation following successful implantation of electrode at one time. The deviation of lead tips in Y vector significantly correlates with the amount of ICA. Funding Statement: This study is supported by National Natural Science Foundation of China (Grant No. 81870890) and Key Program of Scientific Natural Funding of Liaoning Province (Grant No. 20170540935). Declaration of Interests: All authors state that there are no conflicts of interest to disclose. Ethics Approval Statement: The study was approved by the institutional review board and the ethics committee of the General Hospital of Northern Theater Command.