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Article
Does obesity affect the non-invasive measurement of cardiac output performed by electrical cardiometry in children and adolescents?
Journal of Clinical Monitoring and Computing
  • Luis Altamirano-Diaz, Western University
  • Eva Welisch, Western University
  • Ralf Rauch
  • Michael Miller, Western University
  • Teresa Sohee Park, London Health Science Centre
  • Kambiz Norozi, Western University
Document Type
Article
Publication Date
2-17-2018
URL with Digital Object Identifier
https://doi.org/10.1007/s10877-017-9994-1
Disciplines
Abstract

Electrical cardiometry (EC) is a non-invasive and inexpensive method for hemodynamic assessment and monitoring. However, its feasibility for widespread clinical use, especially for the obese population, has yet to be determined. In this study, we evaluated the agreement and reliability of EC compared to transthoracic Doppler echocardiography (TTE) in normal, overweight, and obese children and adolescents. We measured stroke volume (SV) and cardiac output (CO) of 131 participants using EC and TTE simultaneously. We further divided these participants according to BMI percentiles for subanalyses:95% obese (n = 83). Due to small sample size of the overweight group, we combined overweight and obese groups (OW+OB) with no significant change in results (SV and CO) before and after combining groups. There were strong correlations between EC and TTE measurements of SV (r = 0.869 and r = 0.846; p < 0.0001) and CO (r = 0.831 and r = 0.815; p < 0.0001) in normal and OW+OB groups, respectively. Bias and percentage error for CO measurements were 0.240 and 29.7%, and 0.042 and 29.5% in the normal and OW+OB groups, respectively. Indexed values for SV were lower in the OW+OB group than in the normal weight group when measured by EC (p < 0.0001) but no differences were seen when measured by TTE (p = 0.096). In all weight groups, there were strong correlations and good agreement between EC and TTE. However, EC may underestimate hemodynamic measurements in obese participants due to fat tissue.

Notes

Article available at Journal of Clinical Monitoring and Computing, Vol. 32(1).

https://doi.org/10.1007/s10877-017-9994-1

© Springer Science+Business Media Dordrecht 2017
Citation Information
Luis Altamirano-Diaz, Eva Welisch, Ralf Rauch, Michael Miller, et al.. "Does obesity affect the non-invasive measurement of cardiac output performed by electrical cardiometry in children and adolescents?" Journal of Clinical Monitoring and Computing Vol. 32 Iss. 1 (2018) p. 45 - 52
Available at: http://works.bepress.com/michael-miller-paeds/3/