Continuous Quantitative EEG Monitoring in Hemispheric Stroke Patients Using the Brain Symmetry Index

Background and Purpose— There is increased awareness that continuous brain monitoring might benefit neurological patients, because it may allow detection of derangement of brain function in a possible reversible state, allowing early intervention. Here, we explore if quantitative continuous electroe...

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Bibliographic Details
Published in:Stroke (1970) 2004-11, Vol.35 (11), p.2489-2492
Main Authors: van Putten, Michel J.A.M., Tavy, De[Combining Acute Accent]nes L.J.
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy
Biological and medical sciences
Electroencephalography
Emergency and intensive cardiocirculatory care. Cardiogenic shock. Coronary intensive care
Female
Headache. Facial pains. Syncopes. Epilepsia. Intracranial hypertension. Brain oedema. Cerebral palsy
Humans
Intensive care medicine
Male
Medical sciences
Middle Aged
Monitoring, Physiologic
Nervous system (semeiology, syndromes)
Neurology
Stroke - physiopathology
Vascular diseases and vascular malformations of the nervous system
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Summary:Background and Purpose— There is increased awareness that continuous brain monitoring might benefit neurological patients, because it may allow detection of derangement of brain function in a possible reversible state, allowing early intervention. Here, we explore if quantitative continuous electroencephalography (cEEG) monitoring is technically feasible and possibly clinically relevant in patients with acute ischemic hemispheric stroke.Materials— Twenty-one consecutive patients with an acute hemispheric stroke were monitored in our stroke unit, using cEEG for 12 to 24 hours on the day of admission. EEGs were quantified using a particular measure for symmetry, the brain symmetry index (BSI). This measure was subsequently correlated with the clinical condition of the patient using the National Institute of Health Stroke Scale (NIHSS).Results— cEEG was technically feasible. We found a most satisfying positive correlation between the BSI and the NIHSS, with ρ≈0.86 (P
ISSN:0039-2499
1524-4628
DOI:10.1161/01.STR.0000144649.49861.1d