Association between interatrial block, left atrial fibrosis, and mechanical dyssynchrony: Electrocardiography-magnetic resonance imaging correlation.
Luisa Allen CiuffoVanesa BruñaManuel Martinez-SellésHenrique Doria de VasconcellosSusumu TaoTarek ZghaibSaman NazarianDavid D SpraggJoseph E MarineRonald D BergerJoao A C LimaHugh CalkinsAntonio Bayés-de-LunaHiroshi AshikagaPublished in: Journal of cardiovascular electrophysiology (2020)
Advanced IAB is associated with larger LA volumes, lower emptying fraction, and more fibrosis. Longer P-wave duration is also associated with more LA fibrosis and higher LA mechanical dyssynchrony.