Advertisement

The Italian Journal of Neurological Sciences

, Volume 8, Issue 1, pp 55–58 | Cite as

A case of cortical blindness due to carbon monoxide poisoning

  • Quattrocolo G. 
  • Leotta D. 
  • Appendino L. 
  • Tarenzi L. 
  • Duca S. 
Case Reports

Abstract

We report a case of cortical blindness occurring 7 days after acute CO poisoning with no other neurological or psychic deficits apart from denial of the blindness with visual confabulation and slight loss of retentive memory. There was scant correlation between the course of the clinical pattern, which cleared completely within 6 days, and the electroencephalographic pattern with marked and diffuse slowing, which did not recede completely during 3 months observation. CT scanning of the skull, initially within normal limits, displayed 2 weeks later a faint but diffuse hypodensity of the white substance, more marked in the occipital region, which was no longer present 80 days after the first scan.

Key-Words

Cortical blindness CO poisoning 

Sommario

Viene descritto un caso di cecità corticale comparsa sette giorni dopo un 'intossicazione acuta da CO, senza altri deficit neurologici e psichici, tranne anosognosia con confabulazioni limitate alla sfera visiva e lieve deficit della memoria di fissazione.

Si rileva una scarsa corrispondenza tra l'evoluzione del quadro clinico, risoltosi completamente entro il sesto giorno dall'esordio, e la persistenza di marcati rallentamenti elettroencefalografici diffusi, non completamente regrediti nei tre mesi successivi di osservazione.

L'esame TC del cranio, inizialmente nella norma, evidenzia, dopo due settimane, una sfumata ipodensità diffusa della sostanza bianca, più marcata a livello occipitale, che scompare al successivo controllo effettuato dopo 80 giorni.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    Ali-Cherif A., Royere M.L., Gosset, A., Poncet M., Salamon G., Khalil R.:Troubles du comportement et de l'activité mentale après intoxication oxicarbonée. Rev. Neurol. (Paris) 140/6–7: 401–405, 1984.Google Scholar
  2. [2]
    Barnet A., Manson J., Wilner E. Acute cerebral blindness in childhood. Neurology 20: 1147–1156, 1970.PubMedGoogle Scholar
  3. [3]
    Bergman P.:Cerebral Blindness. A.M.A. Arch. Neurol. and Psychiat. 78: 568–584, 1957.Google Scholar
  4. [4]
    Bianco F., Floris R., Bozzao L.:Computerized tomography in CO poisoning. Ital. J. Neurol. Sci. 6: 221–224, 1985.CrossRefPubMedGoogle Scholar
  5. [5]
    Bodis-Wollner I.:Recovery from cerebral blindness: evoked potential and psychophysical measurements. E.E.G. Clin. Neurophysiol. 42: 178–184, 1977.Google Scholar
  6. [6]
    Choi S.:Delayed Neurological Sequelae in Carbon Monoxide Intoxication. Arch. Neurol. 40: 433–435, 1983.PubMedGoogle Scholar
  7. [7]
    Garlan H., Pierce J.:Neurological complications of carbon monoxide poisoning. Quart. J. Med., 36, 445, 1967.Google Scholar
  8. [8]
    Hecaen H.:Introduction à la Neuropsychologie. Paris, Larousse pp. 173–180, 1972.Google Scholar
  9. [9]
    Lennox M., Bender Petersen P.:Electroencephalographic findings in acute carbon monoxide poisoning. E.E.G. Clin. Neurophysiol. 10: 63–68, 1958.Google Scholar
  10. [10]
    Miura T. Mitomo M., Kawai R., Harada K.:CT of the brain in Acute Carbon Monoxide Intoxication. A.J.N.R. 6: 739–742, 1985.Google Scholar
  11. [11]
    Ogawa M., Minami T., Katsurada K., Sugimoto T.:Early electroencephalographic change following acute carbon monoxide poisoning in relation to cerebral metabolism. Med. J. Osaka Univ. 24: 85–90, 1974.Google Scholar
  12. [12]
    Redlich F.C., Dorsey J.F.:Denial of blindness by patients with cerebral disease. Arch. Neurol. and Psychiat. 53, 6: 407–417 1945.Google Scholar

Copyright information

© Masson Italia Periodici 1987

Authors and Affiliations

  • Quattrocolo G. 
    • 1
  • Leotta D. 
    • 1
  • Appendino L. 
    • 1
  • Tarenzi L. 
    • 1
  • Duca S. 
    • 1
  1. 1.Istituto di Clinica NeurologicaUniversità di TorinoTorino

Personalised recommendations