Electroencephalographic Derivatives as a Tool for Predicting the Depth of Sedation and Anesthesia Induced by Sevoflurane

Katoh, Takasumi; Suzuki, Akira; Ikeda, Kazuyuki

doi:10.1097/00000542-199803000-00014

Cited by 305 publications

(157 citation statements)

References 26 publications

Supporting

Mentioning

128

Contrasting

Unclassified

Order By: Relevance

“…During anesthesia with sevoflurane in adults, despite its close relationship with the hypnotic component of anesthesia, the BIS does not allow us to distinguish subjects who are responsive to noxious stimuli from those who are not so responsive. 18 The results of Rodriguez confirm these findings in children. Other authors have demonstrated the predictive capacity of the BIS, particularly during anesthesia with propofol.…”

supporting

confidence: 61%

“…Le BIS, malgré sa relation étroite avec la composante hypnotique de l'anesthésie, ne permet pas de distinguer les sujets sensibles des sujets non sensibles aux stimuli nociceptifs lors d'une anesthésie au sévoflurane chez l'adulte. 18 Les résultats de Rodriguez confirment ces résultats chez l'enfant. D'autres auteurs ont montré un caractère prédictif du BIS, notamment lors de l'anesthésie au propofol.…”

unclassified

See 1 more Smart Citation

BIS use in pediatric anesthesia: where are we?

Constant

2004

Can J Anesth/J Can Anesth

View full text Add to dashboard Cite

supporting

confidence: 61%

unclassified

BIS use in pediatric anesthesia: where are we?

Constant

2004

Can J Anesth/J Can Anesth

View full text Add to dashboard Cite

“…The BIS computes segments of EEG and produces an index value that monitors cortical suppression, tracking the changes of effects of anaesthetics on the brain [23]. It has been reported previously that BIS values correlate with depth of anaesthesia and concentrations of propofol and sevoflurane [23][24][25]. Therefore, to provide comparable levels of propofol and sevoflurane anaesthesia, all patients were monitored using BIS throughout the Doppler measurements.…”

Section: Discussionmentioning

confidence: 99%

“…To produce equivalent depths of anaesthesia between the groups, the bispectral index (BIS) (BIS monitor A 1000, Aspects Medical Corporation, MA, USA) was monitored continuously during the procedure [23][24][25].…”

Section: Methodsmentioning

confidence: 99%

A comparison of propofol and sevoflurane anaesthesia: effects on aortic blood flow velocity and middle cerebral artery blood flow velocity*

Holzer

Winter²,

Greher³

et al. 2003

Anaesthesia

View full text Add to dashboard Cite

SummaryWe compared systemic (aortic) blood flow and cerebral blood flow velocity in 30 patients randomly allocated to receive either propofol or sevoflurane anaesthesia. Cerebral blood flow velocity (CBFv) was measured in the middle cerebral artery using transcranial Doppler. Systemic blood flow velocity (SBFv) was measured in the aorta using transthoracic Doppler sonography at the level of the aortic valve. Bispectral index (BIS) was used to measure the depth of anaesthesia. Measurements were made in the awake patient and repeated during propofol or sevoflurane anaesthesia, with BIS measurements of 40-50. The effects of SBFv on CBFv were estimated by calculating the cerebral ⁄ systemic blood flow velocity-index (CsvI). A CsvI value of 100 indicating a 1 : 1 relationship between CBFv and SBFv. The results demonstrated that propofol anaesthesia produced a significantly greater reduction in CsvI than did sevoflurane anaesthesia [propofol: 60 (19); sevoflurane: 83 (16), p ¼ 0.009, t-test]. This suggests a direct reduction in CBFv independent of SBFv during propofol anaesthesia. The greater reduction of CBFv occurring during propofol anaesthesia may be due to lower cerebral metabolic demand compared with sevoflurane anaesthesia at comparable depths of anaesthesia.

show abstract

“…Among them, quantitative electroencephalogram analysis has been proven to be a valuable and sensitive method in assessing brain function in dogs during anesthesia [13]. As the electroencephalogram (EEG) varies according to the drug used, each drug requires drug-specific interpretation of the EEG [9].…”

mentioning

confidence: 99%

The Effect of Tiletamine/Zolazepam (Zoletile) Combination with Xylazine or Medetomidine on Electroencephalograms in Dogs

Jang

Kwon

Lee

et al. 2004

The Journal of Veterinary Medical Science

View full text Add to dashboard Cite

ABSTRACT. The effects of xylazine or medetomidine on tiletamine/zolazepam (Zoletile ® ) anesthesia were evaluated by changes in the canine electroencephalogram (EEG). Experimental groups were three: the group treated with 10 mg/kg of Zoletile intravenously (TZ), the group treated with 1.1 mg/kg of xylazine intramuscularly and 10 mg/kg of Zoletile intravenously (XTZ), and the group treated with 30 µg/kg of medetomidine intramuscularly and 10 mg/kg of Zoletile intravenously (MTZ). EEG recording electrode was positioned at Cz, which was applied to International 10-20 system. For all recording times, the powers of each band (band 1: 1-2.5 Hz, band 2 : 2.5-4.5 Hz, band 3: 4.5-8 Hz, band 4: 8-13 Hz, band 5: 13-20 Hz, band 6: 20-30 Hz, band 7: 30-50 Hz, band 8: 1-50 Hz) were calculate d. In TZ, at 10 min after Zoletile injection, the powers of bands 3, 4, 5 and 8 significantly decreased. At 20 min after Zoletile injection, the powers of band 1 and 8 were significantly decreased. After Zoletile injection, there were significant decreases in bands 1, 4, 5, 6, 7 and 8 in XTZ, and in bands 1, 3, 4, 5, 6, 7 and 8 in MTZ. These significant changes disappeared in all band powers in TZ and MTZ in the last 1 min just prior to the dogs showing head-up movement. But, in XTZ, all band powers, except band 2, were significantly reduced. EEG power spectral analysis revealed the differences in band powers on awakening, even though the same kind of drugs w ere used. We thought that was a useful method to compare the effect of xylazine and medetomidine on Zoletile-induced anesthesia in dogs.

show abstract

Electroencephalographic Derivatives as a Tool for Predicting the Depth of Sedation and Anesthesia Induced by Sevoflurane

Abstract: Parameters derived from EEG, such as BIS, and 95% SEF are reliable guides to the depth of sedation, but not to the adequacy of anesthesia level for preventing movement during sevoflurane anesthesia.

Cited by 305 publications

References 26 publications

BIS use in pediatric anesthesia: where are we?

BIS use in pediatric anesthesia: where are we?

A comparison of propofol and sevoflurane anaesthesia: effects on aortic blood flow velocity and middle cerebral artery blood flow velocity*

The Effect of Tiletamine/Zolazepam (Zoletile) Combination with Xylazine or Medetomidine on Electroencephalograms in Dogs

Contact Info

Product

Resources

About