Right Atrial Function as a Novel Predictor for New-Onset Atrial Fibrillation in Transthyretin Amyloid Cardiomyopathy.

In the subset of patients with follow‐up echocardiography (n=21; median, 20 months), RAVI showed a trend toward an increase (from 29.7±12.4 to 32.4±12.0 mL/m 2 , P =0.08), whereas RA peak LS and RAEF showed nonsignificant declines (Table S2 ), suggesting that structural remodeling may precede functional decline in RA among patients with ATTR‐CM.

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Although the difference did not reach statistical significance owing to the limited sample size, the same directional trend was observed, supporting the consistency of the findings across cohorts.

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