Abstract:
INTRODUCTION:Recently, a non-invasive, continuous ventricular stroke volume monitoring system using skin electrodes has been developed. In contrast to impedance-based methods, the new technique (ventricular field recognition) enables measurement of changes in ventricular volume. A prototype using this new method was built (the hemologic cardiac profiler, HCP) and validated against a reference method in a pig model during variations in cardiac output. METHODS:In six Dalland pigs, cardiac output was simultaneously measured with the HCP (CO-HCP), and an invasive ultrasonic flow-probe around the ascending aorta (CO-FP). Variations in CO were achieved by change in ventricular loading conditions, cardiac pacing, and dobutamine administration. Data were analysed according to Bland-Altman analysis and Pearson's correlation. RESULTS:Pearson's correlation between the CO-HCP and the CO-FP was r = 0.978. Bland-Altman analysis showed a bias of - 0.114 L/minute, and a variability of the bias (2 standard deviations, 2SD) of 0.55 L/minute. CONCLUSIONS:The results of the present study demonstrate that CO-HCP is comparable to CO-FP in an animal model of cardiac output measurements during a wide variation of CO. Therefore, the HCP has the potential to become a clinical applicable cardiac output monitor.
journal_name
Crit Carejournal_title
Critical care (London, England)authors
Konings MK,Grundeman PF,Goovaerts HG,Roosendaal MR,Hoefer IE,Doevendans PA,Rademakers FE,Buhre WFdoi
10.1186/cc10306subject
Has Abstractpub_date
2011-07-11 00:00:00pages
R165issue
4eissn
1364-8535issn
1466-609Xpii
cc10306journal_volume
15pub_type
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