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Titolo:
Intracranial electroencephalographic changes in deep anesthesia
Autore:
Karasawa, H; Sakaida, K; Noguchi, S; Hatayama, K; Naito, H; Hirota, N; Sugiyama, K; Ueno, J; Nakajima, H; Fukada, Y; Kin, H;
Indirizzi:
Funabashi Municipal Med Ctr, Dept Neurosurg, Funabashi, Chiba 2738588, Japan Funabashi Municipal Med Ctr Funabashi Chiba Japan 2738588 2738588, Japan Funabashi Municipal Med Ctr, Dept Crit Care Med, Funabashi, Chiba 2738588,Japan Funabashi Municipal Med Ctr Funabashi Chiba Japan 2738588 a 2738588,Japan
Titolo Testata:
CLINICAL NEUROPHYSIOLOGY
fascicolo: 1, volume: 112, anno: 2001,
pagine: 25 - 30
SICI:
1388-2457(200101)112:1<25:IECIDA>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
TEMPORAL-LOBE EPILEPSY; ISOFLURANE; PATTERNS; DEPTH;
Keywords:
electroencephalogram; electrocorticogram; anesthesia; monitoring;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Karasawa, H Funabashi Municipal Med Ctr, Dept Neurosurg, 1-21-1 Kanasugi, Funabashi, Chiba 2738588, Japan Funabashi Municipal Med Ctr 1-21-1 KanasugiFunabashi Chiba Japan 2738588
Citazione:
H. Karasawa et al., "Intracranial electroencephalographic changes in deep anesthesia", CLIN NEU, 112(1), 2001, pp. 25-30

Abstract

Objective: it is well known that electroencephalograms (EEGs) show electrical silence in deep anesthesia as well as brain death. This is the first report on intracranial EEG changes in deep anesthesia. Methods: We developed a new direct brain monitoring system capable of recording intracranial EEGs. This study included 13 patients with head trauma or cerebrovascular accident under deep anesthesia. Results: The intracranial EEGs showed different patterns of wave activity in depth compared with the cortical surface. In 3 of the cases, the scalp EEC showed a flat tracing at 2.0-2.5% of isoflurane. In two of the cases, the intracranial EEGs showed electrical silence when the scalp EEG was flat. Decreasing the concentration of isoflurane to 1.5%, the intracranial EEG showed single paroxysmal appearance of 'revival' theta waves on the electrocorticogram (ECoG) or electroventriculogram (EVG). The intracranial 'revival'wave was followed by high-voltage burst-waves. In another case, at 2.0-2.5% of isoflurane, the amplitude of the waves was greatest on the EVG. Conclusion: There is wave activity difference in the brain depth, which the scalp EEG is unable to show. Intracranial EEGs are able to show the firstsigns of revival after a nearly flat tracing in deep anesthesia. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/07/20 alle ore 18:27:19