Title:The Thyroid-cardiac Axis: Thyroid Function, Cardiac Rhythmology, and
Sudden Cardiac Death
Volume: 24
Issue: 10
Author(s): Michael Spartalis*, Eleftherios Spartalis, Stavroula A. Paschou, Dimitrios C. Iliopoulos and Gerasimos Siasos
Affiliation:
- 3rd Department of Cardiology, Sotiria Thoracic Diseases General Hospital, National and Kapodistrian University of
Athens, Athens, Greece
Keywords:
Thyroid, arrhythmia, sudden cardiac death, hyperthyroidism, hypothyroidism, cardiovascular.
Abstract: It is well known that thyroid dysfunction increases the risk of cardiovascular mortality
and morbidity. The pleiotropic effect of thyroid hormones has a profound effect on the cardiovascular
system, influencing both the formation of a normal cardiac rhythm and rhythm disturbance.
A number of research studies have demonstrated correlations between TSH and FT4
levels and significant cardiovascular events. The pathophysiological mechanisms underlying
these complex associations are, however, inadequately defined. A system-based examination of
the relationship between thyroid homeostasis and cardiovascular disease could pave the way for
novel study areas and a more individualised strategy for the management of individuals at cardiovascular
risk.