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/10.1046/j.1365-2044.1998.437-az0550.x |
引用次数
Web of Sciencehttp://aims.cuhk.edu.hk/converis/portal/Publication/33WOS source URL
其它资讯
摘要The 1990s have witnessed major advances in impedance cardiography technology. Problems existed with the methods used to calculate cardiac output. Excessive lung fluid, as often found in critically ill patients, may also invalidate measurements. The signal processing and measurement techniques used in older systems were deficient. The newer systems, of which there are at least six, incorporate novel and improved signal processing techniques. They also offer analog visual displays, personal computer interfacing, sophisticated analytical software and haemodynamic patient management systems. Evaluation of these systems is difficult because no true 'gold standard' method of cardiac output measurement exists. When compared with thermodilution techniques, limits of agreement of +/- 20-30% seem acceptable. These Limits can be achieved in normal subjects but not in critically ill patients. Validation data are available for only half of the new systems. Until. recently, the main application for impedance cardiography has been research but improved accuracy should lead to increased clinical usage.
着者Critchley LAH
期刊名称Anaesthesia
出版年份1998
月份7
日期1
卷号53
期次7
出版社BLACKWELL SCIENCE LTD
页次677 - 684
国际标準期刊号0003-2409
电子国际标準期刊号1365-2044
语言英式英语
关键词measurement techniques, impedance cardiography
Web of Science 学科类别Anesthesiology; ANESTHESIOLOGY
