IRON ISOMALTOSIDE DIMINISHES ATRIAL ELECTRICAL INHOMOGENEITY IN CHRONIC HEART FAILURE WITHOUT ALTERING ATRIAL SIZE: A FERRIC-HF II SUBSTUDY

Atrial sinus impulse propagation is critically dependent on atrial energetics. Enhanced atrial electrical inhomogeneity, as reflected by a prolonged P wave dispersion (Pd), can result from impaired energetics and heralds atrial fibrillation and worsening chronic heart failure (CHF). Because iron