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Journal of Echocardiography
Published in: Journal of Echocardiography 1/2020

01-03-2020 | Echocardiography | Original Investigation

Percentile curves for left ventricle structural, functional and haemodynamic parameters obtained in healthy children and adolescents from echocardiography-derived data

Authors: Alejandro Díaz, Yanina Zócalo, Daniel Bia

Published in: Journal of Echocardiography | Issue 1/2020

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Abstract

Background

Transthoracic echocardiography is the most common non-invasive technique for the study of the left ventricle (LV) and the proximal aorta. Despite the clinical value, there is scarcity of data about reference intervals (RIs) and percentiles for thoracic aorta dimension and LV structural and functional parameters, obtained from population-based studies in children and adolescents. The aim was to generate RIs for LV, haemodynamic and thoracic aorta parameters obtained from transthoracic echocardiography in healthy children, adolescents and young adults from a South-American population.

Methods

One thousand ninety-five healthy subjects (5–24 years) were studied (M-mode, B-mode and Doppler echocardiography).

Results

RIs for LV structural (diameters, volumes and wall thickness) and functional (stroke volume, cardiac output, cardiac index, transmitral E and A flow waves velocities) parameters; systemic vascular resistance and aortic root diameter were obtained using parametric regression analyzes based on fractional polynomials. Covariate analysis (i.e., adjusting for age, body surface) showed that specific sex-specific RIs were necessary. Then, age, body height (BH), body weight (BW), body surface area (BSA), and sex-specific 1st, 2.5th, 5th, 10th, 25th, 50th, 75th, 90th, 95th, 97.5th and 99th percentiles were obtained. Our results were in agreement with and complimentary to available international databases.

Conclusion

This study provides RIs for echocardiography-derived haemodynamic, LV (structural and functional) and aortic parameters in children, adolescents and young adults considering data obtained from the largest Argentinean database. In early stages of life an adequate interpretation of echocardiography-derived LV and aortic parameters requires considering age, BH, BW, BSA and/or sex-specific RIs.
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Metadata
Title
Percentile curves for left ventricle structural, functional and haemodynamic parameters obtained in healthy children and adolescents from echocardiography-derived data
Authors
Alejandro Díaz
Yanina Zócalo
Daniel Bia
Publication date
01-03-2020
Publisher
Springer Singapore
Published in
Journal of Echocardiography / Issue 1/2020
Print ISSN: 1349-0222
Electronic ISSN: 1880-344X
DOI
https://doi.org/10.1007/s12574-019-00425-0

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