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Volume 33, Nº 1, January and february 2020


DOI: https://doi.org/10.36660/ijcs.20190230


The Ejection Fraction Returns to Hyde Park Session's Speakers' Corner

Wolney de Andrade Martins

Antonio José Lagoeiro Jorge


About two decades ago, the Heart Failure Society of America created the Hyde Park Session at its anual meeting.1 The analogy with the free and innovative proposals that took place in the historic London park were transposed to that scientific event. One of the first proposals made there was the extinction of the left ventricular ejection fraction (LVEF) as if it was na absolutist tyrant determining the life of his/her subjects. The proposition took no breath. The overwhelming majority of heart failure (HF) trials used LVEF as na inclusion criterion. The cutoff points varied. Magical numbers had little pathophysiological or clinical foundation. LVEF was measured by noninvasive methods, especially echocardiography, with high intraand inter-examiner variability, dependent on preload and afterload changes.2

Keywords: Heart Failure/physiopathology; Stroke Volume/ physiology; Ventricular Dysfunction; Prognosis.