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Redfield MM, Jacobsen SJ, Burnett JC Jr, Mahoney DW, Bailey KR, Rodeheffer RJ, et al. Burden of systolic and diastolic ventricular dysfunction in the community: Appreciating the scope of the heart failure epidemic. <i>JAMA<\/i> 2003; 289: 194\u2013202.","DOI":"10.1001\/jama.289.2.194"},{"key":"2","doi-asserted-by":"crossref","unstructured":"2. Bella JN, Palmieri V, Roman MJ, Liu JE, Welty TK, Lee ET, et al. Mitral ratio of peak early to late diastolic filling velocity as a predictor of mortality in middle-aged and elderly adults: The Strong Heart Study. <i>Circulation<\/i> 2002; 105: 1928\u20131933.","DOI":"10.1161\/01.CIR.0000015076.37047.D9"},{"key":"3","doi-asserted-by":"crossref","unstructured":"3. Halley CM, Houghtaling PL, Khalil MK, Thomas JD, Jaber WA. Mortality rate in patients with diastolic dysfunction and normal systolic function. <i>Arch Intern Med<\/i> 2011; 171: 1082\u20131087.","DOI":"10.1001\/archinternmed.2011.244"},{"key":"4","doi-asserted-by":"crossref","unstructured":"4. Hatle L. How to diagnose diastolic heart failure a consensus statement. <i>Eur Heart J<\/i> 2007; 28: 2421\u20132423.","DOI":"10.1093\/eurheartj\/ehm412"},{"key":"5","doi-asserted-by":"crossref","unstructured":"5. Nagueh SF, Smiseth OA, Appleton CP, Byrd BF 3rd, Dokainish H, Edvardsen T, et al. Recommendations for the evaluation of left ventricular diastolic function by echocardiography: An update from the American Society of Echocardiography and the European Association of Cardiovascular Imaging. <i>Eur Heart J Cardiovasc Imaging<\/i> 2016; 17: 1321\u20131360.","DOI":"10.1093\/ehjci\/jew082"},{"key":"6","doi-asserted-by":"crossref","unstructured":"6. Smiseth OA. 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Origin of regional pressure gradients in the left ventricle during early diastole. <i>Am J Physiol<\/i> 1995; 268: H550\u2013H557.","DOI":"10.1152\/ajpheart.1995.268.2.H550"},{"key":"10","doi-asserted-by":"crossref","unstructured":"10. Yoshida T, Ohte N, Narita H, Sakata S, Wakami K, Asada K, et al. Lack of inertia force of late systolic aortic flow is a cause of left ventricular isolated diastolic dysfunction in patients with coronary artery disease. <i>J Am Coll Cardiol<\/i> 2006; 48: 983\u2013991.","DOI":"10.1016\/j.jacc.2006.04.087"},{"key":"11","doi-asserted-by":"crossref","unstructured":"11. Sugawara M, Uchida K, Kondoh Y, Magosaki N, Niki K, Jones CJ, et al. Aortic blood momentum: The more the better for the ejecting heart in vivo? <i>Cardiovasc Res<\/i> 1997; 33: 433\u2013446.","DOI":"10.1016\/S0008-6363(96)00241-6"},{"key":"12","doi-asserted-by":"crossref","unstructured":"12. Kikuchi S, Wakami K, Goto T, Fukuta H, Sonoda H, Tani T, et al. Clinical significance of abnormal relaxation pattern of the transmitral flow velocity waveform in older patients with preserved left ventricular ejection fraction. <i>Circ J<\/i> 2013; 77: 2551\u20132557.","DOI":"10.1253\/circj.CJ-13-0426"},{"key":"13","doi-asserted-by":"crossref","unstructured":"13. Lang RM, Badano LP, Mor-Avi V, Afilalo J, Armstrong A, Ernande L, et al. Recommendations for cardiac chamber quantification by echocardiography in adults: An update from the American Society of Echocardiography and the European Association of Cardiovascular Imaging. <i>Eur Heart J Cardiovasc Imaging<\/i> 2015; 16: 233\u2013270.","DOI":"10.1093\/ehjci\/jev014"},{"key":"14","doi-asserted-by":"crossref","unstructured":"14. Weiss JL, Frederiksen JW, Weisfeldt ML. Hemodynamic determinants of the time-course of fall in canine left ventricular pressure. <i>J Clin Invest<\/i> 1976; 58: 751\u2013760.","DOI":"10.1172\/JCI108522"},{"key":"15","doi-asserted-by":"crossref","unstructured":"15. Goto T, Wakami K, Fukuta H, Fujita H, Tani T, Ohte N. Patients with left ventricular ejection fraction greater than 58% have fewer incidences of future acute decompensated heart failure admission and all-cause mortality. <i>Heart Vessels<\/i> 2016; 31: 734\u2013743.","DOI":"10.1007\/s00380-015-0657-1"},{"key":"16","doi-asserted-by":"crossref","unstructured":"16. Kitada S, Kawada Y, Osaga S, Kato M, Kikuchi S, Wakami K, et al. Left ventricular contractile performance and heart failure in patients with left ventricular ejection fraction more than 40. <i>Heart Vessels<\/i> 2020; 35: 1689\u20131698.","DOI":"10.1007\/s00380-020-01641-w"},{"key":"17","doi-asserted-by":"crossref","unstructured":"17. Paulus WJ, Tsch\u00f6pe C, Sanderson JE, Rusconi C, Flachskampf FA, Rademakers FE, et al. How to diagnose diastolic heart failure: A consensus statement on the diagnosis of heart failure with normal left ventricular ejection fraction by the Heart Failure and Echocardiography Associations of the European Society of Cardiology. <i>Eur Heart J<\/i> 2007; 28: 2539\u20132550.","DOI":"10.1093\/eurheartj\/ehm380"},{"key":"18","doi-asserted-by":"crossref","unstructured":"18. Ohte N, Narita H, Akita S, Kurokawa K, Hayano J, Sugawara M, et al. The mechanism of emergence and clinical significance of apically directed intraventricular flow during isovolumic relaxation. <i>J Am Soc Echocardiogr<\/i> 2002; 15: 715\u2013722.","DOI":"10.1067\/mje.2002.119113"},{"key":"19","doi-asserted-by":"crossref","unstructured":"19. Yanada A, Ohte N, Narita H, Akita S, Miyabe H, Takada N, et al. The role of apically directed intraventricular isovolumic relaxation flow in speeding early diastolic left ventricular filling. <i>J Am Soc Echocardiogr<\/i> 2003; 16: 1226\u20131230.","DOI":"10.1067\/j.echo.2003.08.005"},{"key":"20","doi-asserted-by":"crossref","unstructured":"20. Wang J, Khoury DS, Yue Y, Torre-Amione G, Naguehet SF. Preserved left ventricular twist and circumferential deformation, but depressed longitudinal and radial deformation in patients with diastolic heart failure. <i>Eur Heart J<\/i> 2008; 29: 1283\u20131289.","DOI":"10.1093\/eurheartj\/ehn141"},{"key":"21","doi-asserted-by":"crossref","unstructured":"21. Stokke TM, Hasselberg NE, Smedsrud MK, Sarvari SI, Haugaa KS, Smiseth OA. Geometry as a confounder when assessing ventricular systolic function: Comparison between ejection fraction and strain. <i>J Am Coll Cardiol<\/i> 2017; 70: 942\u2013954.","DOI":"10.1016\/j.jacc.2017.06.046"},{"key":"22","doi-asserted-by":"crossref","unstructured":"22. Ito H, Ishida M, Makino W, Goto Y, Ichikawa Y, Kitagawa K, et al. Cardiovascular magnetic resonance feature tracking for characterization of patients with heart failure with preserved ejection fraction: Correlation of global longitudinal strain with invasive diastolic functional indices. <i>J Cardiovasc Magn Reson<\/i> 2020; 22: 42.","DOI":"10.1186\/s12968-020-00636-w"},{"key":"23","doi-asserted-by":"crossref","unstructured":"23. Hurlburt HM, Aurigemma GP, Hill JC, Narayanan A, Gaasch WH, Vinch CS, et al. Direct ultrasound measurement of longitudinal, circumferential, and radial strain using 2-dimensional strain imaging in normal adults. <i>Echocardiography<\/i> 2007; 24: 723\u2013731.","DOI":"10.1111\/j.1540-8175.2007.00460.x"},{"key":"24","doi-asserted-by":"crossref","unstructured":"24. Levy PT, Machefsky A, Sanchez AA, Patel MD, Rogal S, Fowler S, et al. 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