[Thyroid hormones and the heart]. / Hormony tarczycy a serce.

ABSTRACT

The thyroid hormones exert effects on the heart and the peripheral circulation playing an important role in the regulation of the function of the sinoatrial node, the systolic and diastolic function of the myocardium and the peripheral resistance. Their act directly by influence on protein synthesis, the properties of cell membranes and indirectly by interactions with autonomic nervous system causing increase in cardiac output and decrease systemic vascular resistance. Applying thyroid hormone therapy to the treatment of various forms of heart disease is connected with the development of the knowledge about their mechanism of action.