Electroencephalographic background desynchronization during cerebral blood flow reduction

M. Cursi; M. V. Meraviglia; G. F. Fanelli; R. Chiesa; A. Tirelli; G. Comi; F. Minicucci

doi:10.1016/j.clinph.2005.06.026

Electroencephalographic background desynchronization during cerebral blood flow reduction

M. Cursi, M. V. Meraviglia, G. F. Fanelli, R. Chiesa, A. Tirelli, G. Comi, F. Minicucci

IRCCS Ospedale San Raffaele

Research output: Contribution to journal › Article › peer-review

Abstract

Objective: The aim of this study is to evaluate the usefulness of a spectral function detecting cerebral hypoperfusion. Methods: Continuous electroencephalographic monitoring was employed during 47 consecutive carotid endarterectomies. Patients were assigned to 3 different groups according to the entity of electroencephalographic changes during carotid clamping (major changes: group A; moderate changes: group B; no change: group C). The desynchronization function, indicating the reduction of the 8-15 Hz band power, and the desynchronization index were calculated. Results: Group A function decreased within 20 s from clamping, with a constant slope (7.14). Desynchronization indexes were: 76.85% (group A), 40.23% (group B) and 15.29% (group C). Difference among groups was statistically significant (P

Original language	English
Pages (from-to)	2577-2585
Number of pages	9
Journal	Clinical Neurophysiology
Volume	116
Issue number	11
DOIs	https://doi.org/10.1016/j.clinph.2005.06.026
Publication status	Published - Nov 2005

Keywords

Carotid endarterectomy
EEG computer analysis
Hypoperfusion
Intraoperative monitoring

ASJC Scopus subject areas

Clinical Neurology
Radiology Nuclear Medicine and imaging
Neurology
Sensory Systems
Physiology (medical)

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title = "Electroencephalographic background desynchronization during cerebral blood flow reduction",

abstract = "Objective: The aim of this study is to evaluate the usefulness of a spectral function detecting cerebral hypoperfusion. Methods: Continuous electroencephalographic monitoring was employed during 47 consecutive carotid endarterectomies. Patients were assigned to 3 different groups according to the entity of electroencephalographic changes during carotid clamping (major changes: group A; moderate changes: group B; no change: group C). The desynchronization function, indicating the reduction of the 8-15 Hz band power, and the desynchronization index were calculated. Results: Group A function decreased within 20 s from clamping, with a constant slope (7.14). Desynchronization indexes were: 76.85% (group A), 40.23% (group B) and 15.29% (group C). Difference among groups was statistically significant (P",

keywords = "Carotid endarterectomy, EEG computer analysis, Hypoperfusion, Intraoperative monitoring",

author = "M. Cursi and Meraviglia, {M. V.} and Fanelli, {G. F.} and R. Chiesa and A. Tirelli and G. Comi and F. Minicucci",

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AU - Cursi, M.

AU - Meraviglia, M. V.

AU - Fanelli, G. F.

AU - Chiesa, R.

AU - Tirelli, A.

AU - Comi, G.

AU - Minicucci, F.

PY - 2005/11

Y1 - 2005/11

N2 - Objective: The aim of this study is to evaluate the usefulness of a spectral function detecting cerebral hypoperfusion. Methods: Continuous electroencephalographic monitoring was employed during 47 consecutive carotid endarterectomies. Patients were assigned to 3 different groups according to the entity of electroencephalographic changes during carotid clamping (major changes: group A; moderate changes: group B; no change: group C). The desynchronization function, indicating the reduction of the 8-15 Hz band power, and the desynchronization index were calculated. Results: Group A function decreased within 20 s from clamping, with a constant slope (7.14). Desynchronization indexes were: 76.85% (group A), 40.23% (group B) and 15.29% (group C). Difference among groups was statistically significant (P

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KW - Carotid endarterectomy

KW - EEG computer analysis

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KW - Intraoperative monitoring

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