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Digitale Medien

A study of electrical impedance of oedematous cerebral tissue during operations (1972)

Go, K. G. ; Veen, P. H. ; Ebels, E. J. ; [weitere]

Springer

Acta neurochirurgica 27 (1972), S. 113-124

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Details

ISSN: 0942-0940

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary In 11 patients, most of whom had cerebral tumours, electrical impedance was recorded during the introduction of an impedance electrode during operation. After removal of the lesion impedance was measured in the tissue adjacent to the walls of the wound cavity. The readings were correlated with water and electrolyte content and with histological findings in the specimens taken from the same places. Electrical impedance appeared to be lowered in regions invaded by tumour and also in the surrounding oedematous areas of white matter. Unless primarily affected, cerebral cortex usually did not show oedema. The increase of water in the oedematous area was accompanied by a proportional increase of tissue Na+ and a decrease of tissue K+. The method of impedance measurement does not allow the delineation of a tumour from the surrounding oedema.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01401876

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