Cited by 146Hemodynamic Monitoring and TherapyNon-Invasive Vital Sign MonitoringElectrical and Bioimpedance Tomography

Continuous non-invasive cardiac output measurements in the neonate by electrical velocimetry: A comparison with echocardiography

Noori, Shahab, Drabu, Benazir, Soleymani, Sadaf, Seri, Istvan·2012·Archives of Disease in Childhood - Fetal and Neonatal Edition

Abstract

OBJECTIVE: Electrical velocimetry (EV) is a non-invasive method of continuous left cardiac output monitoring based on measurement of thoracic electrical bioimpedance. The objective was to validate EV by investigating the agreement in cardiac output measurements performed by EV and echocardiography. DESIGN: In this prospective observational study, left ventricular output (LVO) was simultaneously measured by EV (LVO(ev)) using Aesculon and by echocardiography (LVO(echo)) in healthy term neonates during the first 2 postnatal days. To determine the agreement between the two methods, we calculated the bias (mean difference) and precision (1.96×SD of the difference). As LVO(echo) has its own limitations, the authors also calculated the 'true precision' of EV adjusted for echocardiography as the reference method. RESULTS: The authors performed 115 paired measurements in 20 neonates. LVO(ev) and LVO(echo) were similar (534±105 vs 538±105 ml/min, p=0.7). The bias and precision of EV were -4 and 234 ml/min, respectively. The authors found the true precision of EV to be similar to the precision of echocardiography (31.6% vs 30%, respectively). There was no difference in bias and precision between the measurements obtained in patients with or without a haemodynamically significant patent ductus arteriosus. CONCLUSIONS: EV is as accurate in measuring LVO as echocardiography and the variation in the agreement between EV and echocardiography among the individual subjects reflects the limitations of both techniques.

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Crossref · 10.1136/fetalneonatal-2011-301090

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Authors
Noori, S., Drabu, B., Soleymani, S., & Seri, I.
Affiliations
  • University of Southern California (US)
  • Children's Hospital of Oklahoma (US)
  • 1Division of Neonatology and the Center for Fetal and Neonatal Medicine, Department of Pediatrics, Children's Hospital Los Angeles and the LAC+USC Medical Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
Corresponding author
Noori, Shahab
Venue
Archives of Disease in Childhood - Fetal and Neonatal Edition
Publisher
BMJ
Published
2012-08-29
Volume
97
Issue
5
Pages
F340-F343
ISSN
  • 1359-2998 (ISSN-L)
  • 1468-2052
OpenAlex
W2114998295
Cited by
146
References
16
Citations by year
2026: 4 · 2025: 6 · 2024: 10 · 2023: 8 · 2022: 8 · 2021: 14 · 2020: 12 · 2019: 15 · 2018: 13 · 2017: 13 · 2016: 17 · 2015: 11 · 2014: 9 · 2013: 1 · 2012: 5
FWCI
8.43
Type
journal article
Language
en
Open access
closed
Locations
  • Archives of Disease in Childhood Fetal & Neonatal (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Surgery › Hemodynamic Monitoring and Therapy
  • Physical Sciences › Engineering › Biomedical Engineering › Non-Invasive Vital Sign Monitoring
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Electrical and Bioimpedance Tomography
Keywords
electrical velocimetry, cardiac output monitoring, neonates, impedance cardiography, echocardiography, left ventricular output, measurement agreement, patent ductus arteriosus, noninvasive hemodynamic monitoring
MeSH terms
Cardiac Output, Echocardiography, Female, Humans, Infant, Newborn, Infant, Premature, Male, Monitoring, Physiologic, Prospective Studies, Rheology, Ventricular Function, Left, Critical Illness

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