Abstract 10993: Prognostic Value of Low T ₃ Syndrome in Patients with Acute Decompensated Heart Failure in Osaka Prefectural Acute Heart Failure Registry (OPAR)

Backgrounds: It is widely recognized that thyroid dysfunction is a potential cause of heart failure (HF). In HF, one of the alterations of thyroid functions is referred to as low T 3 syndrome marked by a reduction in serum free triiodothyronine (T 3 ) with normal levels of thyroid-stimulating hormone (TSH). However, there is little information available about the association between low T 3 syndrome and future cardiac events in patients with acute decompensated heart failure (ADHF), relating to left ventricular ejection fraction (LVEF). Methods and Results: We studied 565 patients admitted for ADHF with survival discharge in our prospective cohort study. Laboratory data including free T 3 , thyroxine and TSH were obtained at discharge. Among the patients with euthyroid (0.35 μU/mL More