Normal Values of Left Ventricular Size and Function on Three-Dimensional Echocardiography: Results of the World Alliance Societies of Echocardiography Study - 02/05/22
on Behalf of the
WASE Investigators
Abstract |
Background |
Echocardiography remains the most widely used modality to assess left ventricular (LV) chamber size and function. Currently this assessment is most frequently performed using two-dimensional (2D) echocardiography. However, three-dimensional (3D) echocardiography has been shown to be more accurate and reproducible than 2D echocardiography. Current normative reference values for 3D LV analysis are based predominantly on data from North America and Europe. The World Alliance Societies of Echocardiography study was designed to sample normal subjects from around the world to provide more universal global reference ranges. The aim of this study was to assess the worldwide feasibility of LV 3D echocardiography and report on size and functional measurements.
Methods |
A total of 2,262 healthy subjects were prospectively enrolled from 19 centers in 15 countries. Three-dimensional LV full-volume data sets were obtained and analyzed offline using vendor-neutral software. Measurements included LV end-diastolic and end-systolic volumes, LV ejection fraction (LVEF), global longitudinal strain (GLS), and global circumferential strain. Results were categorized by age (18-40, 41-65, and >65 years), sex, and race.
Results |
A total of 1,589 subjects (feasibility 70%) had adequate LV data sets for analysis. Mean normal values for indexed end-diastolic volume, end-systolic volume, and LVEF in men and women were 70 ± 15 and 65 ± 12 mL/m2, 28 ± 7 and 25 ± 6 mL/m2, and 60 ± 5% and 62 ± 5%, respectively. Men had larger LV volumes and lower LVEFs than women. GLS and global circumferential strain were higher in magnitude in women. In both sexes, LV volumes were lower and LVEF tended to be higher with increasing age, especially considering the differences between the youngest and oldest age groups. Although GLS was similar across age groups in men, in women, the youngest and middle-age cohorts revealed higher magnitudes of GLS compared with the oldest age group. Global circumferential strain was higher in magnitude at older age in both men and women. Finally, Asians had smaller chamber sizes and higher LVEFs and absolute strain values than both blacks and whites.
Conclusions |
Age, sex, and race should be considered when defining normal reference values for LV dimension and functional parameters obtained by 3D echocardiography.
Le texte complet de cet article est disponible en PDF.Highlights |
• | A total of 1,589 healthy adult subjects were studied. |
• | Normal values of 3D LV size and functional parameters were established. |
• | Age, sex, and race have significant impacts on 3D LV parameters. |
Keywords : WASE, 3D echocardiography, Left ventricle, Strain, Ejection fraction
Abbreviations : 2D, 3D, BSA, CMR, EDV, ESV, GCS, GLS, LV, LVEF, NORRE, SV, WASE
Plan
The study received support from the American Society of Echocardiography. |
|
Mr Degel, Mr Hitschrich, Mr Blankenhagen, and Mr Schreckenberg are employees of TomTec Imaging Systems. All authors were involved in the design of the WASE study, patient enrollment, and/or data analysis, and all critically reviewed and approved the final manuscript before submission. A full list of WASE investigators is provided in the Appendix. |
|
Judy W. Hung, MD, FASE, served as guest editor for this report. |
Vol 35 - N° 5
P. 449-459 - mai 2022 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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