Abstract
Background: Elevated left ventricular filling pressure is pathophysiological of heart failure with mid-range and preserved ejection fraction (HFmrEF and HFpEF, respectively). Chronically elevated filling pressures lead to left atrial (LA) enlargement, which may impair LA function, further increasing pulmonary pressures. We evaluated the role of LA size and function as an independent contributor to haemodynamics in patients with HFmrEF/HFpEF.
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