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Impact of catheter ablation on functional tricuspid regurgitation in patients with atrial fibrillation

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Abstract

Background

Atrial fibrillation (AF) plays the main role in atrial functional tricuspid regurgitation (TR). However, the effectiveness of catheter ablation (CA) for atrial functional TR together with the mechanisms of improvement of atrial functional TR have not been fully evaluated.

Methods

We retrospectively investigated consecutive 2685 patients with AF who received CA from February 2004 to December 2019 in Kyoto University Hospital, Kyoto, Japan. The current study population consisted of 2331 patients with available transthoracic echocardiographic (TTE) data before CA (2110 patients without significant TR and 221 patients with significant TR). Among the 221 patients with significant TR, there were 64 patients with functional TR and follow-up TTE at 6–18 months after CA for AF, in whom we compared echocardiographic parameters from baseline to follow-up.

Results

Patients with significant TR were older, and more often women, and had more persistent AF than those without significant TR. Among the 64 patients with functional TR, TR severity and TR jet area significantly improved at follow-up (TR jet area: 5.8 [4.0–7.6] cm2 to 2.1 [1.1–3.1] cm2, P < 0.001). Moreover, mitral regurgitation jet area, left atrial area, mitral valve diameter, right ventricular end-diastolic area, right atrial area, and tricuspid valve diameter decreased at follow-up.

Conclusions

TR severity and jet area improved after CA in patients with AF and significant TR. The improvement of TR might be associated with reverse remodeling of the right heart.

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Acknowledgements

We appreciate the support and collaboration of the members of ultrasound center of Kyoto University Hospital.

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Correspondence to Shin Watanabe.

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The ethics committee of Kyoto University Hospital approved the research protocol.

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The authors declare no competing interests.

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Nishiwaki, S., Watanabe, S., Yoneda, F. et al. Impact of catheter ablation on functional tricuspid regurgitation in patients with atrial fibrillation. J Interv Card Electrophysiol 66, 1441–1453 (2023). https://doi.org/10.1007/s10840-022-01410-x

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  • DOI: https://doi.org/10.1007/s10840-022-01410-x

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