Advertisement
Research article| Volume 119, ISSUE 1, P8-17, October 1993

Transient ischemic attacks: Electrophysiological (conventional and topographic EEG) and radiological (CCT) evaluation

DOI:https://doi.org/10.1016/0022-510X(93)90186-3
Transient ischemic attacks: Electrophysiological (conventional and topographic EEG) and radiological (CCT) evaluation
Previous ArticleCerebral vasospasm following post-traumatic subarachnoid hemorrhage evaluated by transcranial Doppler ultrasonography
Next ArticleA histometrical study on the globus pallidus in Huntington's disease
      This paper is only available as a PDF. To read, Please Download here.

      Abstract

      The value of electrophysiological tests: conventional electroencephalography (EEG), topographic EEG analysis as well as computerized tomography (CT) in the diagnosis and evaluation of 25 patients with manifestations of transient ischemic attacks (TIA) in the domain of the carotid system was assessed. Normal CT was the rule in TIA patients except in 8% of the cases, where nonspecific changes of brain atrophy were described. Conventional EEG, topographic EEG and spectral analysis could detect abnormalities in 48%, 80% and 64% of TIA cases respectively. None of the abnormal EEG records could be missed by topographic EEG analysis. 32% of the records were diagnosed as abnormal by topographic EEG, while conventional EEG failed to detect abnormalities. Spectral analysis of the EEG results revealed a significant decrease regarding mean high limit alpha percent power, and a significant increase regarding mean low and high limit theta percent power, as well as a significant increase of the mean high limit of the slow activities Math Eq activities (alpha + beta) percent power ratio in the TIA group as compared to the normal control group.

      Keywords

      To read this article in full you will need to make a payment

      Purchase one-time access:

      Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online access
      One-time access price info
      • For academic or personal research use, select 'Academic and Personal'
      • For corporate R&D use, select 'Corporate R&D Professionals'

      Subscribe:

      Subscribe to Journal of the Neurological Sciences
      Already a print subscriber? Claim online access
      Already an online subscriber? Sign in
      Register: Create an account
      Institutional Access: Sign in to ScienceDirect

      References

        • Biller J.
        • Laster D.W.
        • Howard G.
        • Toole J.F.
        • McHenry L.C.
        Cranial computerized tomography in carotid artery transient ischemic attacks.
        Eur. Neurol. 1982; 21: 98-101
        • Bradac G.B.
        • Obserson R.
        C.T. and angiography in cases with occlusive disease of supratentorial carotid vessels.
        J. Neuroradiol. 1980; 19: 193-200
        • Castle W.M.
        Statistics in Small Doses.
        2nd edn. Churchill Livingstone, New York1977
        • Duffy F.H.
        • Burchfiel J.L.
        • Lombroso C.T.
        Brain electrical activity mapping (BEAM): a method for extending the clinical utility of EEG and evoked potential data.
        Ann. Neurol. 1979; 5: 309-321
      5. Duffy F.H. Iyer V.G. Surwillo W.W. EEG in clinical diagnosis and its relationship to other neurological tests. Clinical Electroencephalography and Topographic Brain Mapping, Technology and Practice. Springer-Verlag, New York/Berlin1989: 243-252 (Chapter 21)
        • Elwan O.
        • Madkour O.
        • Kamal I.
        • Abdallah M.
        Electroencephalographic changes following steroid contraceptives.
        Clin. Electroencephalogr. 1973; 4: 185-196
        • Elwan O.
        • Taher Y.
        • Barradah O.
        Electroencephalographic changes in chronic cerebrovascular occlusive disorders.
        Clin Electroencephalogr. 1974; 5: 92-102
        • Eng S.
        • Lechner H.
        • Logar C.
        • Ladurner G.
        Clinical value of EEG in transient ischemic attacks.
        in: Lechner H. Aranibar A. EEG and Clinical Neurophysiology. Excerpta Medica, Amsterdam1980: 173-180
        • Gotman J.
        • Gloor P.
        • Ray W.F.
        A quantitative comparison of traditional reading of the EEG and interpretation of computer extracted features in patients with supratentorial brain lesions.
        Electroenceph. Clin. Neurophysiol. 1975; 38: 623-639
        • Harrison M.J.G.
        Investigation of strokes.
        in: Russel R.W. Vascular diseases of the CNS. Churchill, Livingstone1983: 154-168 (chapter 8)
        • Jonkman E.J.
        • Dieren A.V.
        • Veering M.M.
        • Ponsen L.
        • Lopes Da Silva F.H.
        • Tulleken C.A.F.
        EEG and CBF in cerebral ischemia. Follow-up studies in human and monkeys.
        in: Pfurtscheller G. Jonkman E.H. Lopes Da Silva F.H. Brain Ischemia: Quantitative EEG and Imaging Techniques. Elsevier, Amsterdam1984: 145-171
        • Kowada M.
        • Goto T.
        A dynamic topography composed of EP and background EEG preliminary note.
        in: Matsuoka S. Soejima T. Yokota A. Clinical Topography Electroencephalography and Evoked Potential. Shindan-To-Chiryo Co., Ltd, Tokyo1986: 192-196
        • Levine R.L.
        • Lagreze H.L.
        • Dobkin J.A.
        • Hanson J.M.
        • Satter M.R.
        • Rowe B.R.
        • Nickles R.J.
        Cerebral vasocapacitance and TIAS.
        Neurology. 1980; 39: 25-29
        • Mies G.
        • Hoppe G.
        • Hossmann K.A.
        Limitations of EEG frequency analysis in the diagnosis of intracerebral diseases.
        in: Pfurtscheller G. Jonkman E.J. Lopes Da Silva F.H. Brain Ischemia: Quantitative EEG and Imaging Techniques. Elsevier, Amsterdam1984: 85-106
        • Nagata K.
        • Yunoki K.
        • Araki G.
        • Mizukami M.
        Topographic electroencephalographic study of transient ischemic attacks.
        Electroenceph. Clin. Neurophysiol. 1984; 58: 291-301
        • Nagata K.
        • Tagawa K.
        • Shishido F.
        • Uemura K.
        Topographic EEG correlates of cerebral blood flow and oxygen consumption in patients with neuropsychological disorders.
        in: Duffy F.H. Topographic Mapping of Brain Electrical Activity. Butterworths, London1986: 357-370
        • Nuwer M.R.
        • Jordan S.E.
        • Ahn S.S.
        Evaluation of stroke using EEG frequency analysis and topographic mapping.
        Neurology. 1987; 37: 1153-1159
        • Ott E.
        • Lechner H.
        • Marguc K.
        • Bertha G.
        • Aranibar A.
        • Ladurner G.
        Correlation of EEG and CT findings with cerebral blood flow measurements in patients with cerebrovascular disorders.
        in: Lechner H. Aranibar A. EEG and Clinical Neurophysiology. Excerpta Medica, Amsterdam1980: 143-147
        • Ottonello G.A.
        • Regeasta G.
        • Tanganelli P.
        Correlation between computed tomography and EEG findings in acute cerebrovascular disorders.
        in: Lechner H. Aranibar A. EEG and Clinical Neurophysiology. Excerpta Medica, Amsterdam1980: 148-162
        • Pfurtscheller G.
        • Ladurner G.
        • Maresch H.
        • Vollmer R.
        Brain electrical activity mapping in normal and ischemic brain.
        in: Pfurtscheller G. Jonkman E.H. Lopes Da Silva F.H. Brain Ischemia: Quantitative EEG and Imaging Techniques. Elsevier, Amsterdam1984: 287-302
        • Scheinberg P.
        Controversies in the management of cerebral vascular disease.
        Neurology. 1988; 38: 1609-1616
        • Toole J.F.
        Transients ischemic attacks.
        in: Cerebrovascular Disorders. 4th edn. Raven Press, New York1990: 129
        • Van Der Drift J.H.A.
        The EEG in cerebrovascular disease.
        in: Handbook of Clinical Neurology. Vol. II. North-Holland Publ. Co, Amsterdam1980: 267-291
        • Van Huffelen A.C.
        • Poortvliet D.C.J.
        • Van Der Wulp C.J.M.
        Quantitative electroencephalography in cerebral ischemia. Detection of abnormalities in “normal EEGs”.
        in: Pfurtscheller G. Jonkman E.H. Lopes Da Silva F.H. Brain Ischemia: Quantitative EEG and Imaging Techniques. Elsevier, Amsterdam1984: 3-28

      Article info

      Publication history

      Accepted: April 10, 1993
      Received in revised form: March 31, 1993
      Received: August 31, 1992

      Identification

      DOI: https://doi.org/10.1016/0022-510X(93)90186-3

      Copyright

      © 1993 Published by Elsevier Inc.

      ScienceDirect

      Access this article on ScienceDirect
      We use cookies to help provide and enhance our service and tailor content. To update your cookie settings, please visit the for this site.
      Copyright © 2023 Elsevier Inc. except certain content provided by third parties. The content on this site is intended for healthcare professionals.


      RELX