Intracerebral Hemorrhage and Venous Infarction after Deep Brain Stimulation Lead Placement

[2],[7],[8] In this study, the authors retrospectively investigated factors possibly affecting the risk of cerebral vascular events (ICH or venous infarction) during DBS surgery in 268 patients (518 DBS electrodes), including patient age, sex, anatomic target, use or nonuse of microelectrode recording (MER), number of MERs performed, number of channels used in MER, and other parameters. [...]the second imaging examination, which always involved a CT scan on the postoperative day 2–7 (routine cerebral CT scan before discharge or CT scan due to symptoms), showed low-density lesions (cerebral edema) surrounding the superficial aspect of the implanted lead. [12] analyzed 109 studies (6237 patients and 9890 trajectories to deep nuclei) and found a significant positive relationship between MER and ICH; the estimated per-trajectory ICH rate was 1.57% (95% confidence interval, 1.26–1.95%)[12] In the present study, the application of intraoperative MER significantly increased the risk of vascular injury. [...]patients aged ≥60 years are more likely to develop vascular injury, which more readily occurs in the cortex and puncture channel.