Letter by Cerit et al Regarding Article, “Thyroid Function and Sudden Cardiac Death: A Prospective Population-Based Cohort Study”
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To the Editor:
We have read the article by Chaker et al1 with great interest. The investigators reported that although participants with subclinical or overt hypo- or hyperthyroidism did not have a higher risk of sudden cardiac death (SCD) than euthyroid participants, higher free thyroxine (FT4) levels were associated with an increased risk of SCD, even in euthyroid participants.1 Thyroid hormone has a stimulatory effect on β-adrenergic signaling, leading to positive chronotropic, dromotropic, …