Atrial Fibrillation Clinical Trial
Official title:
Left Atrial Thrombus on Transesophageal Echocardiography
The aim of the study is to assess the prevalence of left atrial thrombus in patients with atrial fibrillation (AF) or atrial flutter (AFI), in whom transesophageal echocardiography is performed before AF/AFl cardioversion or ablation.
Atrial fibrillation (AF) and atrial flutter (AFI) increase the risk of thromboembolic events
by promoting clot formation in the left atrium (LA). Transesophageal echocardiography (TEE)
is routinely used to exclude the presence of an LA thrombus before AF/AFI ablation or
cardioversion. So far, it has not been established what is the optimal combination of
noninvasive parameters for thromboembolic risk stratification in this setting. The present
study is aimed to compare the prevalence of LA thrombus in patients on different
anticoagulant regimens, identify predictors of LA thrombus and validate the newly developed
CHA2DS2-VASc-AF-GFR score (and to compare its predictive value in LA thrombus identification
with those of the CHA2DS2-VASc and the CHADS2 scores).
The study protocol all patients with AF or AFl in whom TEE will be performed (to assess their
eligibility for cardioversion or ablation), hospitalized in a participating center during
study period.
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