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. 2021 Jun 25;8:644508. doi: 10.3389/fcvm.2021.644508

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Copyright © 2021 Sabbour, Hasan, Al Badarin, Alibazoglu, Rivard, Romany and Perlini.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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HIDDEN mnemonic. ^#Echocardiographic, speckle-strain and tissue doppler “red flags”: Heart failure normal or mid-range ejection fraction; increased wall thickness; left atrial enlargement; low stroke volume index; low-flow, low-gradient aortic stenosis (Stage D2); low myocardial contraction fraction; advanced diastolic dysfunction; impaired global longitudinal strain with apical sparing; low mitral annular tissue Doppler S' (average septal and lateral annulus) (24). HFpEF, heart failure with preserved ejection fraction.