Bioelectrical Impedance Analysis in Cardiac Surgery
Bioelectrical Impedance Analysis in Cardiac Surgery
复制标题
心脏手术中的生物电阻抗分析
DOI：
10.5580/29b0
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
M. Weyand
中科院分区：
文献类型：
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作者：
R. Feyrer;F. Harig;R. Cesnjevar;O. Mahmoud;Markus Doreth;T. Fischlein;M. Weyand
生物电多频分析（BIA）是一种基于组织传导电流特性的非侵入性身体隔室估计方法。在这项研究中，80例接受择期CABG的患者进行了检查。术前和术后的电阻，电抗和相位角进行了测量，在1，5，50和100 kHz，使用四个皮肤电极技术。根据该数据，计算了全身水（TBW）、细胞内/细胞外水（ICW/ECW）、体细胞质量（BCM）、细胞外质量（ECM）、瘦体重（LBM）、细胞率、Meta和Kapa-Index。同时记录患者、麻醉和灌注的所有数据。术前BIA检查结果正常者占90%以上。术后4小时和24小时，可检测到与TBW、ICW和ECW值增加相关的生物电指标显著降低。ECM、LBM、ECM/BCM指数和ECW/ICW比值均明显增强。术后观察到细胞率、Meta和Kapa-Index降低。结果表明，BIA代表了一个合格的方法，用于评估心脏手术引起的液体转移和身体成分的变化。这一程序的实施可能会演变为一种床旁工具，以监测术后液体分布。
Bioelectrical multi frequency analysis (BIA) is a non-invasive method for estimation of body compartments based on the property of tissues to conduct electrical current. In this study 80 patients underwent elective CABG were examined. Pre- and postoperative resistance, reactance and phase angle were measured at 1, 5, 50 and 100 kHz using a four skin electrode technique. From this data total body water (TBW), intra/extracellular water (ICW/ECW), body cell mass (BCM), extracellular mass (ECM), lean body mass (LBM), cell rate, Meta and Kapa-Index were calculated. Simultaneous all data of patients, anaesthesia and perfusion were documented. Preoperative results of BIA were found to be normal in more than 90%. Four and 24h postoperative a significant decrease in bioelectrical indices could be detected associated with an increase of TBW, ICW and ECW values. BCM, ECM, LBM, ECM/BCM-Index and ECW/ICW ratio showed a noticeable enhancement. A reduction of cell rate, Meta and Kapa-Index was observed postoperatively. The results suggest that BIA represents an eligible method for assessment of fluid shift and changes in body composition induced by cardiac surgery. The implementation of this procedure could be evolving as a bedside tool to monitor postoperative fluid distribution.