TITLE

Subclinical Hypothyroidism: An Update for Primary Care Physicians

AUTHOR(S)
Fatourechi, Vahab
PUB. DATE
January 2009
SOURCE
Mayo Clinic Proceedings;Jan2009, Vol. 84 Issue 1, p65
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Subclinical hypothyroidism (SCH), also called mild thyroid failure, is diagnosed when peripheral thyroid hormone levels are within normal reference laboratory range but serum thyroid-stimulating hormone (TSH) levels are mildly elevated. This condition occurs in 3% to 8% of the general population, it Is more common In women than men, and Its prevalence Increases with age. Of patients with SCH, 80% have a serum TSH of less than 10 mlU/L. The most Important Implication of SCH is high likelihood of progression to clinical hypothyroidism. The possibility that It Is a cardiovascular risk factor has been a subject of debate. Large-scale randomized studies are needed for evidence-based recommendations regarding screening for mild thyroid failure and levothyroxine therapy for this condition. Currently, the practical approach Is routine levothyroxine therapy for persons with a persistent serum TSH of more than 10.0 mlU/L and Individualized therapy for those with a TSH of less than 10.0 mlU/L.
ACCESSION #
36024804

 

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