Letter to the Editor
Copyright ©The Author(s) 2022.
World J Cardiol. Jul 26, 2022; 14(7): 438-445
Published online Jul 26, 2022. doi: 10.4330/wjc.v14.i7.438
Figure 1
Figure 1 There is significant discordance in the normal values of left ventricular ejection fraction reported by several major scientific societies and associations. This makes the classification of heart failure based on the left ventricular ejection fraction problematic. ACCF: American College of Cardiology Foundation; AHA: American Heart Association; ASE: American Society of Echocardiography; EACVI: European Association of Cardiovascular Imaging; ESC: European Society of Cardiology.