Bioreactance is a reliable method for estimating cardiac output at rest and during exercise
Bioreactance is a reliable method for estimating cardiac output at rest and during exercise
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DOI：
10.1093/bja/aeu560
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发表时间：
2015-09-01
影响因子：
9.8
通讯作者：
Jakovljevic, D. G.
中科院分区：
文献类型：
--
作者：
Jones, T. W.;Houghton, D.;Jakovljevic, D. G.
Background. Bioreactance is a novel noninvasive method for cardiac output measurement that involves analysis of blood flow-dependent changes in phase shifts of electrical currents applied across the thorax. The present study evaluated the test-retest reliability of bioreactance for assessing haemodynamic variables at rest and during exercise.Methods. 22 healthy subjects (26 (4) yrs) performed an incremental cycle ergometer exercise protocol relative to their individual power output at maximal O-2 consumption (Wmax) on two separate occasions (trials 1 and 2). Participants cycled for five 3 minstages at 20, 40, 60, 80 and 90% Wmax. Haemodynamic and cardiorespiratory variables were assessed at rest and continuously during the exercise protocol.Results. Cardiac output was not significantly different between trials at rest (P=0.948), or between trials at any stage of the exercise protocol (all P>0.30). There was a strong relationship between cardiac output estimates between the trials (ICC=0.95, P
