Publication in refereed journal
香港中文大学研究人员 ( 现职)
| 郭志德教授 (麻醉及深切治疗学系) |
全文
| 数位物件识别号 (DOI) http://dx.doi.org/10.1007/BF02918206 |
引用次数
Web of Sciencehttp://aims.cuhk.edu.hk/converis/portal/Publication/11WOS source URL
其它资讯
摘要The performance of impedance cardiography (TEBco), using the BoMed NCCOM3-R7S, and thermodilution (TDco) were compared in eight patients during major abdominal surgery. An opioid, volatile and relaxant anaesthetic technique was employed. This was supplemented with an epidural in five cases. Sets of three cardiac output readings, for both methods, were made at 10-20 min intervals throughout surgery. Data were compared using the Bland and Altman method, regression analysis and a nested model to measure variance components at different stages of surgery. Data from 157 sets of readings are presented. Agreement between the two devices was poor, with a ratio of TDco/TEBco of http://aims.cuhk.edu.hk/converis/portal/Publication/115% and limits of agreement of 51-193%. The regression line was TDco=(0.98) x TEBco-0.95 with r=0.60. A more detailed analysis, using nested data, showed good repeatability with coefficients of variation of 5.4% for TDco and 4.8% for TEBco. During surgery shifts in the bias between the two devices occurred, which were related to changes in surgical conditions. Between shifts both devices showed good repeatability over time. Variance components were 0.27 within nested data and 0.082 between bias shifts, with a significantly greater overall component of 1.2 (ANOVA; P=0.0001). Shifts could be explained by deficiencies in the algorithm used to calculate TEBco. Current TEBco technology is too inaccurate for intra-operative use. However, under stable operating conditions TEBco and TDco showed good repeatability.
着者Critchley LAH, Leung DHY, Short TG
期刊名称International Journal of Clinical Monitoring and Computing
出版年份1996
月份2
日期1
卷号13
期次1
出版社KLUWER ACADEMIC PUBL
页次1 - 8
国际标準期刊号0167-9945
语言英式英语
关键词anaesthesia; cardiac output; impedance cardiography; thermodilution
Web of Science 学科类别Anesthesiology; Medical Informatics
