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Cardiovascular Risk in Patients with Subclinical Hypothyroidism.

L H Duntas1, Luca Chiovato2

  • 1Professor, Unit of Endocrinology, Metabolism and Diabetes, Evgenidion Hospital, University of Athens, Greece.

European Endocrinology
|June 7, 2018
PubMed
Summary
This summary is machine-generated.

Subclinical hypothyroidism (SCH) is linked to higher cardiovascular mortality, particularly with elevated thyroid-stimulating hormone (TSH) levels. Managing SCH, considering blood pressure and cholesterol, is crucial for reducing heart risks.

Keywords:
Subclinical hypothyroidismblood pressurecardiovascular risklipidsmetabolic syndromethyroid-stimulating hormone

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Area of Science:

  • Endocrinology
  • Cardiovascular Medicine
  • Public Health

Background:

  • Subclinical hypothyroidism (SCH) is associated with adverse cardiovascular outcomes, primarily affecting lipid profiles and blood pressure (BP).
  • Elevated thyroid-stimulating hormone (TSH) levels (>10mU/l) in SCH patients may significantly increase cardiovascular risk.
  • The interplay between SCH, hypertension, and hypercholesterolemia undeniably contributes to negative cardiovascular impact.

Purpose of the Study:

  • To review the cardiovascular implications of subclinical hypothyroidism.
  • To highlight the role of thyroid-stimulating hormone (TSH) levels in cardiovascular risk stratification.
  • To discuss the impact of coexisting conditions like hypertension and hypercholesterolemia in SCH patients.

Main Methods:

  • Literature review of studies investigating subclinical hypothyroidism and cardiovascular risk factors.
  • Analysis of data on the association between TSH levels, blood pressure, and lipid profiles in SCH.
  • Consideration of the potential role of insulin resistance in modulating cardiovascular risk in SCH.

Main Results:

  • SCH is linked to increased cardiovascular mortality, with effects on lipids and BP.
  • TSH levels >10mU/l in SCH are particularly concerning for cardiovascular risk.
  • The combined presence of SCH, hypertension, and hypercholesterolemia poses a significant cardiovascular threat.

Conclusions:

  • Subclinical hypothyroidism, especially with TSH >10mU/l, warrants attention for cardiovascular risk management.
  • Addressing coexisting hypertension and hypercholesterolemia is critical in SCH patients.
  • Personalized thyroxine treatment and regular health screenings for individuals over 35 are recommended.