학술논문
Echocardiographic predictors of thrombus in left atrial appendage—The role of novel transthoracic parameters
Document Type
article
Author
Damian Kaufmann; Elżbieta Wabich; Agnieszka Kapłon-Cieślicka; Monika Gawałko; Monika Budnik; Beata Uziębło-Życzkowska; Paweł Krzesiński; Katarzyna Starzyk; Beata Wożakowska-Kapłon; Maciej Wójcik; Robert Błaszczyk; Jarosław Hiczkiewicz; Jan Budzianowski; Katarzyna Mizia-Stec; Maciej T. Wybraniec; Katarzyna Kosmalska; Marcin Fijałkowski; Anna Szymańska; Mirosław Dłużniewski; Maciej Haberka; Michał Kucio; Błażej Michalski; Karolina Kupczyńska; Anna Tomaszuk-Kazberuk; Katarzyna Wilk-Śledziewska; Renata Wachnicka-Truty; Marek Koziński; Paweł Burchardt; Ludmiła Daniłowicz-Szymanowicz
Source
Frontiers in Cardiovascular Medicine, Vol 9 (2022)
Subject
Language
English
ISSN
2297-055X
Abstract
IntroductionThe left atrium appendage thrombus (LAAT) formation is a complex process. A CHA2DS2-VASc scale is an established tool for determining the thromboembolic risk and initiation of anticoagulation treatment in patients with atrial fibrillation or flutter (AF/AFL). We aimed to identify whether any transthoracic echocardiography (TTE) parameters could have an additional impact on LAAT detection.MethodsThat is a sub-study of multicenter, prospective, observational study LATTEE (NCT03591627), which enrolled 3,109 consecutive patients with AF/AFL referred for transesophageal echocardiography (TEE) before cardioversion or ablation.ResultsLAAT was diagnosed in 8.0% of patients. The univariate logistic regression analysis [based on pre-specified in the receiver operating characteristic (ROC) analysis cut-off values with AUC ≥ 0.7] identified left ventricular ejection fraction (LVEF) ≤ 48% and novel TTE parameters i.e., the ratios of LVEF and left atrial diameter (LAD) ≤ 1.1 (AUC 0.75; OR 5.64; 95% CI 4.03–7.9; p < 0.001), LVEF to left atrial area (LAA) ≤ 1.7 (AUC 0.75; OR 5.64; 95% CI 4.02–7.9; p < 0.001), and LVEF to indexed left atrial volume (LAVI) ≤ 1.1 (AUC 0.75, OR 6.77; 95% CI 4.25–10.8; p < 0.001) as significant predictors of LAAT. In a multivariate logistic regression analysis, LVEF/LAVI and LVEF/LAA maintained statistical significance. Calculating the accuracy of the abovementioned ratios according to the CHA2DS2-VASc scale values revealed their highest predictive power for LAAT in a setting with low thromboembolic risk.ConclusionNovel TTE indices could help identify patients with increased probability of the LAAT, with particular applicability for patients at low thromboembolic risk.