{"title":"Management of Subclinical Hypothyroidism: The 2023 Korean Thyroid Association Guidelines","authors":"Hyun-Kyung Chung","doi":"10.3904/kjm.2024.99.3.127","DOIUrl":null,"url":null,"abstract":"Subclinical hypothyroidism (SCH) is characterized by elevated serum thyroid-stimulating hormone (TSH) levels and normal free thyroxine levels. The Korean Thyroid Association recently issued guidelines for managing SCH. Based on the Korea National Health and Nutrition Examination Survey (2013-2015), a serum TSH level of 6.8 mIU/L is the reference value for SCH. SCH is classified as mild (TSH 6.8-10.0 mIU/L) or severe (TSH > 10.0 mIU/L), and patients are categorized as adult (age < 70 years) or elderly (age ≥ 70 years). Levothyroxine treatment (LT4-Tx) is not recommended for mild or even severe SCH in elderly patients. Immediate LT4-Tx can be given to adults in most cases, but not to women who are pregnant, patients with progressive disease, or patients with underlying coronary artery disease, heart failure, or dyslipidemia.","PeriodicalId":517046,"journal":{"name":"The Korean Journal of Medicine","volume":"1 7","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Korean Journal of Medicine","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3904/kjm.2024.99.3.127","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Subclinical hypothyroidism (SCH) is characterized by elevated serum thyroid-stimulating hormone (TSH) levels and normal free thyroxine levels. The Korean Thyroid Association recently issued guidelines for managing SCH. Based on the Korea National Health and Nutrition Examination Survey (2013-2015), a serum TSH level of 6.8 mIU/L is the reference value for SCH. SCH is classified as mild (TSH 6.8-10.0 mIU/L) or severe (TSH > 10.0 mIU/L), and patients are categorized as adult (age < 70 years) or elderly (age ≥ 70 years). Levothyroxine treatment (LT4-Tx) is not recommended for mild or even severe SCH in elderly patients. Immediate LT4-Tx can be given to adults in most cases, but not to women who are pregnant, patients with progressive disease, or patients with underlying coronary artery disease, heart failure, or dyslipidemia.
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