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Thyroid hormone and heart failure.

Ursula Maria Schmidt-Ott1, Deborah Davis Ascheim

  • 1Department of Medicine, Division of Cardiology, Columbia University College of Physicians and Surgeons, 630 West 168th Street, New York, NY 10032, USA.

Current Heart Failure Reports
|August 18, 2006
PubMed
Summary
This summary is machine-generated.

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Thyroid dysfunction, including hyperthyroidism and hypothyroidism, impacts heart function and heart failure (HF) progression. Low triiodothyronine levels are increasingly linked to reduced cardiac performance and poor HF prognosis.

Area of Science:

  • Cardiology
  • Endocrinology
  • Molecular Medicine

Background:

  • Thyroid hormone metabolic disarray is a risk factor for heart disease and heart failure (HF).
  • Both hyperthyroidism and hypothyroidism are linked to myocardial dysfunction.
  • Hyperthyroid-induced cardiac issues are rare, often in patients with pre-existing heart conditions.

Purpose of the Study:

  • To review current data on thyroid dysfunction and heart failure.
  • To explore the implications of the "low triiodothyronine state" in HF.
  • To summarize the association between thyroid states and cardiac performance.

Main Methods:

  • Literature review of current data on thyroid dysfunction and HF.
  • Analysis of studies investigating thyroid hormone levels and cardiac function.

Related Experiment Videos

  • Synthesis of findings on molecular and systemic effects of thyroid hormones on the heart.

    • Main Results:

    • Hyperthyroidism can cause poor cardiac contractility and low cardiac output, especially in patients with existing heart disease.
    • Hypothyroidism, particularly low triiodothyronine, is associated with reduced cardiac performance and poor prognosis in HF.
    • Low thyroid hormone levels alter cardiac gene expression and increase systemic vascular resistance, impairing cardiac contractility and output.

    Conclusions:

    • Thyroid dysfunction significantly impacts heart failure progression and outcomes.
    • The "low triiodothyronine state" presents emerging implications for cardiac performance in HF patients.
    • Understanding thyroid hormone's role is crucial for managing heart failure effectively.