Journal of neurosurgical anesthesiology
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J Neurosurg Anesthesiol · Jan 2024
Evaluating a Novel EEG-Based Index for Stroke Detection Under Anesthesia During Mechanical Thrombectomy.
The rapid identification of acute stroke (AS) during and after anesthesia might lead to early interventions and improved outcomes. We investigated a novel 2-channel electroencephalogram (EEG)-based marker for stroke detection-the lateral interconnection ratio (LIR)-in AS patients having endovascular thrombectomy (EVT) with general anesthesia (GA) or sedation. The LIR in 2 reference groups of patients without postoperative neurological complications was used for comparison. ⋯ We demonstrated the utility of using AS patients undergoing EVT as a platform for assessing a novel EEG marker for the identification of stroke during anesthesia. Further, large-scale studies in AS patients during EVT and in patients undergoing different surgeries and anesthesia are required to validate the LIR.
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J Neurosurg Anesthesiol · Jan 2024
Observational StudyEffect of Different Surgical Positions on the Changes in Cerebral Venous Drainage in Patients Undergoing Neurosurgery: A Prospective Observational Study.
Some patient positions employed to facilitate neurosurgery can compromise cerebral venous drainage and lead to increased intracranial pressure, intraoperative bleeding, and brain bulge. This study evaluated the impact of different surgical positions on internal jugular vein (IJV) flow as a measure of cerebral venous drainage and on optic nerve sheath diameter (ONSD) as an indirect assessment of intracranial pressure. ⋯ Mean IJV flow decreased from baseline following the final neurosurgical positioning. Ultrasound-guided assessment of IJV flow could be a useful tool to quantify position-related changes in IJV drainage.
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J Neurosurg Anesthesiol · Jan 2024
Clinical Effects and Adverse Events Associated With Desflurane Use in Adult Patients Undergoing Supratentorial Craniotomy: A Systematic Review.
Desflurane is an inhalational anesthetic agent with an appealing recovery profile. The present systematic review investigates the clinical effects and adverse events associated with desflurane use during supratentorial craniotomy for brain tumor resection in adults in comparison with other inhalational and intravenous anesthetic agents. A literature search was conducted across the MEDLINE, Library of Congress and LISTA (EBSCO) databases from January 2001 to January 2021. ⋯ Systemic hemodynamic variables (mean arterial pressure and heart rate) and cerebral hemodynamics (intracranial pressure and cerebrospinal fluid pressure) were comparable between desflurane and other anesthetic agents in each study. The results of this systematic review demonstrate that desflurane is associated with few adverse events when used for anesthesia maintenance in adult patients undergoing supratentorial brain tumor surgery. Large, prospective, comprehensive studies, utilizing standardized parameter evaluation could provide higher levels of evidence to support these findings.