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A Potential Novel Indication for Preventing Thromboembolism in Patients with Atrial Arrhythmias: Remodeling of the Left Atrium

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Abstract

Objective

Thrombosis in patients with atrial arrhythmias might be associated with remodeling of the left atrium (LA). We aimed to describe this relationship and identify a novel factor, in addition to the CHA2DS2-VASc score, to guide therapeutic strategies for preventing thromboembolism in the hope of improving the prognosis for such patients.

Methods

Patients diagnosed with atrial arrhythmias and who met our inclusion criteria were enrolled in this study. Various clinical parameters were recorded; diameters reflecting remodeling of the LA were measured and thrombosis was diagnosed by enhanced CT.

Results

Totally, 192 patients were enrolled in the study. The overall prevalence of left atrial thrombosis was 8.3%. Patients with persistent atrial fibrillation exhibited the highest anteroposterior diameter of the LA (45.1±7.2 mm) and prevalence of thrombosis (15.6%). An anteroposterior LA diameter of ≥50 mm was a strong independent impact risk factor for thrombosis (OR=10.1, 95%CI: 2.8–36.9, P<0.001). The prevalence of LA thrombosis in patients with and without anteroposterior LA diameter of ≥50 mm was 25.8% and 5.0%, respectively.

Conclusion

Marked remodeling of the LA characterized by an anteroposterior LA diameter of ≥50 mm is a strong independent risk factor of thrombosis, and should be considered for the prevention of thromboembolism through various strategies.

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Correspondence to Yu-long Guo.

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Conflict of Interest Statement

We declare that there are no conflicts of interest in this article.

This project was supported by Yunnan Applied Basic Research Projects (Kunming Medical University Union Special Fund) [No. 2018FE001(-154)], Yunnan Provincial Fund for High Level Reserve Talents in Health Science (No. H-2018037), Scientific Research Fund Project of Fuwai Yunnan Cardiovascular Hospital (No. 2019YFKT-04) Young Scientists Fund (No. 81501406) and Yunnan Provincial Fund for High Level Reserve Talents in Health Science (No. H-2017068).

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Liu, C., Liu, S., Li, H. et al. A Potential Novel Indication for Preventing Thromboembolism in Patients with Atrial Arrhythmias: Remodeling of the Left Atrium. CURR MED SCI 41, 1187–1191 (2021). https://doi.org/10.1007/s11596-021-2449-4

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  • DOI: https://doi.org/10.1007/s11596-021-2449-4

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