뇌성마비 환자에서 마취 유도 시 BIS와 Entropy 값의 비교Comparison of bispectral index (BIS) and entropy in patients with cerebral palsy during sevoflurane induction
- Other Titles
- Comparison of bispectral index (BIS) and entropy in patients with cerebral palsy during sevoflurane induction
- Authors
- 김남엽; 이일옥; 임병건; 김희주; 공명훈; 이미경; 임상호; 김난숙
- Issue Date
- 2009
- Publisher
- 대한마취통증의학회
- Keywords
- Anesthesia; Bispectral index; Cerebral palsy; Entropy; Sevoflurane; Anesthesia; Bispectral index; Cerebral palsy; Entropy; Sevoflurane
- Citation
- Korean Journal of Anesthesiology, v.57, no.4, pp.422 - 427
- Indexed
- KCI
- Journal Title
- Korean Journal of Anesthesiology
- Volume
- 57
- Number
- 4
- Start Page
- 422
- End Page
- 427
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/120972
- ISSN
- 2005-6419
- Abstract
- Background: Demand of anesthesia for patients with cerebral palsy is more increasing. But there is still lacking in clinical research regarding how BIS and entropy reflect well on sedative and hypnotic state in patients with cerebral palsy.
Methods: Fifteen patients with cerebral palsy (Group CP) and fifteen patients without cerebral palsy (Group NL) scheduled for elective orthopedic surgery were included in the study. Induction of anesthesia was done by having the patient inhale 1 vol% sevoflurane and 100% oxygen using a total fresh gas flow of 8 L/min. Simultaneously BIS, state entropy (SE), response entropy (RE), end-tidal sevoflurane concentration were recorded every 15 seconds till there was no self respiration. When end-tidal sevoflurane concentration had not risen any more for 30 seconds, we increased inhaled sevoflurane concentration in 1 vol% increments. End point of recording was when self respiration was lost or the time sevoflurane concentration reached 8 vol%.
Results: No significant differences in RE, SE, BIS at baseline and end point were found between the two groups. No significant difference in the time reach end point was found between the two groups. BIS, SE and RE correlated with end-tidal sevoflurane concentration in the two groups.
Conclusions: The authors found no significant difference in the entropy values between patients with CP and normal patients. Also, the entropy values could be interpreted like BIS in patients with CP. And BIS showed a stronger correlation with end tidal sevoflurane concentrations than entropy.
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