Asleep Deep Brain Stimulation Reduces Incidence of Intracranial Air during Electrode Implantation.
STEREOTACTIC AND FUNCTIONAL NEUROSURGERY(2018)
Abstract
Background: Asleep deep brain stimulation (aDBS) implantation replaces microelectrode recording for image-guided implantation, shortening the operative time and reducing cerebrospinal fluid egress. This may decrease pneumocephalus, thus decreasing brain shift during implantation. Objective: Jo compare the incidence and volume of pneumocephalus during awake (wkDBS) and aDBS procedures. Methods: A retrospective review of bilateral DBS cases performed at Oregon Health & Science University from 2009 to 2017 was undertaken. Postimplantation imaging was reviewed to determine the presence and volume of intracranial air and measure cortical brain shift. Results: Among 371 patients, pneumocephalus was noted in 66% of wkDBS and 15.6% of aDBS. The average volume of air was significantly higher in wkDBS than aDBS (8.0 vs. 1.8 mL). Volumes of air greaterthan 7 mL, which have previously been linked to brain shift, occurred significantly more frequently in wkDBS than aDBS (34 vs 5.6%). wkDBS resulted in significantly larger cortical brain shifts (5.8 vs. 1.2 mm). Conclusions: We show that a DBS reduces the incidence of intracranial air, larger air volumes, and cortical brain shift. Large volumes of intracranial air have been correlated to shifting of brain structures during DBS procedures, a variable that could impact accuracy of electrode placement. (C) 2018 S. Karger AG, Basel
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Key words
Deep brain stimulation,Asleep deep brain stimulation,Pneumocephalus,Brain shift,Stereotactic error
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