“…Experimental and clinical analyses have shown, that thyroid hormone (TH) has a fundamental role in cardiovascular homeostasis, influencing cardiac contractility, heart rate, diastolic function and systemic vascular resistance [11]. Abnormal metabolism of TH may lead to various heart diseases, like accelerated coronary atherosclerosis [12]. Coceani et al have demonstrated that free triiodothyronine (T3) levels are inversely correlated with the presence of coronary artery disease (CAD), whereas Low -triiodothyronine (T3) syndrome causes an adverse prognosis for CAD [13].…”