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. 2020 Mar 26;8(6):1129–1136. doi: 10.12998/wjcc.v8.i6.1129

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©The Author(s) 2020. Published by Baishideng Publishing Group Inc. All rights reserved.

This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial.

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Echocardiogram. Echocardiogram pre-operation showed a normal left ventricular ejection fraction of 58% and normal cardiac chamber size with no structural abnormality of both ventricles. LVPWs: Left ventricular posterior wall systolic thickness; LVPW: Left ventricular posterior wall; LVs mass: Left ventricular end-systolic mass; LVIDs: Left ventricle internal diameter at end-systole; ESV: End-systolic volume; EF: Ejection fraction; FS: Fractional shortening; SV: Systolic volume; IVSs: Interventricular septum end-systolic thickness; IVS: Interventricular septum.