The atrial tachyarrhythmia–free survival was marginally lower in the hypothyroidism group than in the normal TSH group, but the difference did not reach statistical significance (crude hazard ratio [HR], 1.66; 95% confidence interval [CI], 0.95–2.93; P =0.077 by Cox hazard analysis) (Figure 1 A).
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High-Normal Thyroid-Stimulating Hormone Shows a Potential Causal Association With Arrhythmia Recurrence After Catheter Ablation of Atrial Fibrillation.
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