Predictors of Atrial Fibrillation Recurrence in Hyperthyroid and Euthyroid Patients

To the Editor,

I have read with great interest the article entitled “Predictors of Atrial Fibrillation Recurrence in Hyperthyroid and Euthyroid Patients” by Gürdogan et al., recently published in Arquivos Brasileiros de Cardiologia. The investigators reported that rates of atrial fibrillation (AF) recurrence were similar in hyperthyroid and euthyroid patients and that the duration of AF was the only predictor of AF recurrence in both.

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