Neuropsychobiology
Pharmacoelectroencephalography
Topographic Brain Mapping of EEG before and after Open-Heart SurgeryZeitlhofer J.a · Saleiu B.b · Anderer P.b · Asenbaum S.a · Spiss C.c · Mohl W.d · Kasall H.d · Wolner E.d · Deecke L.aaUniversity Clinic of Neurology (Head: Prof. L. Deecke), bUniversity Clinic of Psychiatry (Head: Prof. P. Berner), cUniversity Clinic of Anesthesiology and Intensive Care Medicine (Head: Prof. O. Mayrhofer-Krammel), d2nd University Clinic of Surgery (Head: Prof. E. Wolner), Vienna, Austria
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Article / Publication Details
Published online: February 20, 2008
Issue release date: 1988
Number of Print Pages: 6
Number of Figures: 0
Number of Tables: 0
ISSN: 0302-282X (Print)
eISSN: 1423-0224 (Online)
For additional information: https://www.karger.com/NPS
Abstract
The brain function of 60 patients undergoing open-heart surgery (36 patients receiving coronary artery bypass, 21 patients valve replacements, 3 both) was investigated before and 10 days after the operation utilizing topographic brain mapping of the electroencephalogramm (EEG). The postoperative EEG changes were characterized by a slight delta-theta increase, an alpha decrease [especially in the fast alpha (10.5–13 Hz) band] and a beta increase in the relative power. The total power and the absolute power of the delta-theta, alpha and beta showed a decrease, the dominant frequency a significant slowing from 9.7 to 9.3 Hz. The centroid of alpha and beta activity decreased as well. These results are similar to findings obtained in patients with organic brain syndrome. The EEG changes were prominent over the left hemisphere, which may be of particular clinical relevance.
© 1988 S. Karger AG, Basel
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Article / Publication Details
Published online: February 20, 2008
Issue release date: 1988
Number of Print Pages: 6
Number of Figures: 0
Number of Tables: 0
ISSN: 0302-282X (Print)
eISSN: 1423-0224 (Online)
For additional information: https://www.karger.com/NPS
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