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. 2021 Nov 23;11:22800. doi: 10.1038/s41598-021-02196-0

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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ECG 2D and Doppler imaging measurements. (A) M-mode imaging of the LV mid-papillary level in the parasternal short-axis view. (B) Mitral valve inflow velocities were recorded by Doppler ECG in the apical 4-chamber view. (C) LV myocardial velocities were recorded by TDI in the apical 4-chamber view. (D) AADs and AADd were measured in M-mode imaging. *AADs ascending aorta diameters at end-systole; AADd ascending aorta diameters at end-diastole.