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Impact of left atrial volume, sphericity, and fibrosis on the outcome of catheter ablation for atrial fibrillation

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INTRODUCTION: To investigate the relation between left atrial (LA) volume, sphericity, and fibrotic content derived from contrast-enhanced cardiac magnetic resonance imaging (CE-CMR) and their impact on the outcome of catheter ablation for atrial fibrillation (AF). METHODS AND RESULTS: In 83 patients undergoing catheter ablation for AF, CE-CMR was used to assess LA volume, sphericity, and fibrosis. There was a significant correlation between LA volume and sphericity (R = 0.535, P < 0.001) and between LA volume and fibrosis (R = 0.241, P = 0.029). Multivariate analyses demonstrated that LA volume was the strongest independent predictor of AF recurrence after catheter ablation (1.019, P = 0.018). CONCLUSION: LA volume, sphericity, and fibrosis were closely related; however, LA volume was the strongest predictor of AF recurrence after catheter ablation.

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Journal of Cardiovascular Electrophysiology, 2018, vol. 29, num. 5, p. 740-746

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Articles publicats en revistes (Medicina)

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Impact of left atrial volume, sphericity, and fibrosis on the outcome of catheter ablation for atrial fibrillation