Melduni RM, et al. - Researchers analyzed the association of CHA₂DS₂-VASc score or transesophageal echocardiographic (TEE) risk factors with the occurrence of left atrial appendage thrombus (LAAT) in patients undergoing first-time TEE-guided electrical cardioversion (ECV) for sustained atrial fibrillation (AF). In this patient population, reduced left ventricular ejection fraction and reduced LA appendage emptying velocity were noted to be important pathophysiologic correlates of LAA thrombogenesis and subsequent ischemic stroke.