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Article Abstract
Background: The clinical significance of echocardiographic left ventricular hypertrophy (LVH) in risk stratification of left atrial appendage (LAA) thrombogenic milieu, as a surrogate for cardioembolic risk, in patients with atrial fibrillation (AF) and HADS-VASc scores of 0-2 is unknown.
Methods And Results: We enrolled 707 consecutive patients with AF and CHADS-VASc scores of 0-2 who underwent transesophageal echocardiography. LAA thrombogenic milieu was defined as the presence of a thrombus, severe spontaneous echo contrast, sludge in the LAA, or LAA flow velocity ≤ 20 cm/s. Alongside conventional parameters, longitudinal strain values for the left ventricle (LV) and left atrium were obtained using transthoracic echocardiography. Among the 707 patients, 77 (10.9 %) exhibited LVH. The LVH group exhibited a significantly higher prevalence of LAA thrombogenic milieu than the non-LVH group (32.5 % vs. 2.5 %, p < 0.001). LVH independently associated with LAA thrombogenic milieu after adjusting for clinical factors (including CHADS-VASc score, AF type, and serum brain natriuretic peptide levels) and conventional echocardiographic parameters (including LV ejection fraction, LV end-diastolic volume index, and left atrium volume index) (odds ratio [OR]: 7.54, 95 % confidence interval [CI]: 3.49-16.29, p < 0.001 and OR: 7.16, 95 % CI: 3.26-15.73, p < 0.001, respectively). Moreover, LVH provided incremental value for predicting LAA thrombogenic milieu, even when added to the longitudinal strain of the LV and left atrium reservoir strains (p < 0.001).
Conclusion: Echocardiographic LVH significantly improves the prediction of LAA thrombogenic milieu, offering potential utility in further cardioembolic risk stratification for patients with AF and CHADS-VASc scores of 0-2.
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| http://dx.doi.org/10.1016/j.ijcard.2024.132682 | DOI Listing |
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