Change in auditory evoked potential index and bispectral index during induction of anesthesia with anesthetic drugs.
J Clin Monit Comput
; 29(5): 621-6, 2015 Oct.
Article
em En
| MEDLINE
| ID: mdl-25427598
ABSTRACT
The aim of this study was to evaluate the efficacy of the auditory evoked potential (AEP) index (aepEX) as an assessment tool for hypnosis during induction of various anesthetic drugs, and to compare its performance to that of the bispectral index (BIS). A total of 45 cases were divided into three groups based on the drugs used for anesthesia. Before anesthetic induction, BIS and AEP monitors were initiated. Anesthesia was induced through intravenous injection (IV) as follows MP (n = 15) group, midazolam (0.1 mg/kg IV); TP (n = 15) group, thiopental (4 mg/kg IV); and KP (n = 15) group, ketamine (2 mg/kg IV). After loss of response (LOR), an infusion of 3 µg/ml propofol via a target-controlled infusion was initiated in all groups. AepEX and BIS were measured in the waking state (baseline) and at LOR (1 min after LOR), pre-intubation (1 min after previous intubation) and post-intubation (1 min after tracheal intubation finished). The value of aepEX significantly decreased in all groups with LOR and that of BIS also decreased except of KP group. No significant difference were observed in BIS values between baseline and LOR in the KS group. The aepEX might be more useful than BIS for hypnosis monitoring during anesthetic induction, particularly when drugs such as ketamine are used.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Anestésicos Gerais
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Estado de Consciência
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Eletroencefalografia
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Potenciais Evocados Auditivos
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Monitores de Consciência
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Monitorização Neurofisiológica Intraoperatória
Tipo de estudo:
Clinical_trials
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Diagnostic_studies
Limite:
Adult
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Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article