Publication in refereed journal
香港中文大学研究人员 ( 现职)
| 陈德威教授 (麻醉及深切治疗学系) |
| Professor Tony GIN (麻醉及深切治疗学系) |
全文
| 数位物件识别号 (DOI) ○○@http://aims.cuhk.edu.hk/converis/portal/Publication/3$@○○ |
引用次数
Web of Sciencehttp://aims.cuhk.edu.hk/converis/portal/Publication/2WOS source URL
Scopushttp://aims.cuhk.edu.hk/converis/portal/Publication/3Scopus source URL
其它资讯
摘要Background: The electroencephalogram contains small electrical signals that are vulnerable to contamination from highfrequency noise during electrocautery. The bispectral index (BIS) monitor incorporated hardware and software changes to eliminate artifacts, thus allowing BIS monitoring even in the presence of electrocautery. We evaluated the accuracy of BIS to measure anesthetic effect during electrocautery interference. Methods: Anesthesia was induced and maintained with targetcontrolled infusions of propofol (http://aims.cuhk.edu.hk/converis/portal/Publication/3 μg/mL) and remifentanil (4 ng/mL). After baseline BIS recordings, "simulated" electrocautery interference was induced continuously for http://aims.cuhk.edu.hk/converis/portal/Publication/20 minutes. Five minutes after the start of electrocautery, propofol infusion was increased to achieve an effect site concentration of 6 μg/mL. Patients remained undisturbed during the study. BIS values and signal quality index were recorded continuously. Results: During electrocautery, there was a significant decrease in signal quality index (mean difference: 16.9; 95% confidence intervals: 15.9-17.9; P<0.001). There was, however, no change in BIS value even after a step increase in propofol infusion from http://aims.cuhk.edu.hk/converis/portal/Publication/3 to 6μg/mL (P=0.9http://aims.cuhk.edu.hk/converis/portal/Publication/3). In http://aims.cuhk.edu.hk/converis/portal/Publication/2http://aims.cuhk.edu.hk/converis/portal/Publication/2% of the patients there was a paradoxical increase in BIS values after doubling of propofol concentration. Following cessation of electrocautery, there was a prompt decrease in BIS (P<0.001), indicating a lack of response to the change in anesthetic depth during electrocautery. Conclusions: Rejecting and filtering artifacts from electrocautery interference reduced the ability of BIS to respond to a change in anesthetic depth. BIS values during electrocautery should be interpreted with caution. ? http://aims.cuhk.edu.hk/converis/portal/Publication/201http://aims.cuhk.edu.hk/converis/portal/Publication/2 by Lippincott Williams & Wilkins.
着者Chan M.T.V., Ho S.S., Gin T.
期刊名称JOURNAL OF NEUROSURGICAL ANESTHESIOLOGY
出版年份http://aims.cuhk.edu.hk/converis/portal/Publication/201http://aims.cuhk.edu.hk/converis/portal/Publication/2
月份1
日期1
卷号http://aims.cuhk.edu.hk/converis/portal/Publication/24
期次1
出版社Lippincott Williams & Wilkins Ltd.
出版地United States
页次9 - 1http://aims.cuhk.edu.hk/converis/portal/Publication/3
国际标準期刊号0898-49http://aims.cuhk.edu.hk/converis/portal/Publication/21
语言英式英语
关键词Bispectral index, Depth of anesthesia, Electrocautery, Electroencephalogram, Propofol, Signal interference, Targetcontrolled infusion
