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Thyroid hormone and cardiovascular disease

M Gomberg-Maitland1, W H Frishman

  • 1Department of Medicine, New York Hospital-Cornell Medical Center, NY, USA.

American Heart Journal
|March 7, 1998
PubMed
Summary

Thyroid hormone impacts the cardiovascular system, affecting heart function and blood vessels. Supplementation shows benefits only for documented hypothyroidism, not other systemic conditions like euthyroid sick syndrome.

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Area of Science:

  • Cardiology
  • Endocrinology

Background:

  • Thyroid hormone influences myocardial contractility, heart rate, and peripheral vascular resistance.
  • Thyroid hormone deficiency can lead to cardiovascular disease and exacerbate existing conditions.
  • Severe illness or surgery can cause 'euthyroid sick syndrome,' characterized by altered thyroid hormone levels.

Purpose of the Study:

  • To explore the potential benefits of thyroid hormone supplementation in conditions associated with euthyroid sick syndrome.
  • To evaluate thyroid hormone as a therapeutic option for cardiovascular conditions like heart failure and hyperlipidemia.

Main Methods:

  • Review of existing literature on thyroid hormone's cardiovascular effects.
  • Analysis of studies investigating thyroid hormone supplementation in various systemic illnesses and cardiovascular diseases.

Main Results:

  • Thyroid hormone supplementation has shown promise for patients with documented hypothyroidism.
  • Evidence supporting thyroid hormone supplementation for euthyroid sick syndrome or other systemic conditions is currently lacking.
  • Thyroid hormone's cardiovascular effects make it a theoretical consideration for hemodynamic support.

Conclusions:

  • Current evidence does not support thyroid hormone supplementation for systemic conditions beyond documented hypothyroidism.
  • Further research is needed to clarify the role of thyroid hormone in managing euthyroid sick syndrome and related cardiovascular issues.

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