Introduction
Heart failure with preserved ejection fraction (HFpEF) is a prevalent condition characterized by a failure of the heart to pump effectively while maintaining normal ejection fraction levels. One component that has been identified as crucial in the functioning of the heart during this condition is the left atrial (LA) function. Dysfunction of the left atrium is notably common among HFpEF patients, affecting their prognosis and quality of life. Recent research has focused on understanding and quantifying the mechanical performance of the LA through a new measure known as the Left Atrial Volumetric/Mechanical Coupling Index (LACI). This index helps reflect the atrial contractile function using the Frank-Starling mechanism inherent to the heart’s physiology.
