ArticleEuropean thyroid journal2024
Treatment of subclinical hyperthyroidism in patients older than 50 years: A randomized controlled study.
Article in European thyroid journal, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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Who cites it
2 citing papers in PubMed.
- How to manage autoimmune hyperthyroidism (Graves' disease): from differential diagnosis to emerging immunological therapies.Drugs in context · 2026Review
- Prolonged Normal Thyroid Function AfterJournal of clinical medicine · 2025Article
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Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveSubclinical hyperthyroidism (SCH) is common and associated with atrial fibrillation (AF) risk in the elderly. Current guidelines rely on a low level of evidence.
methodsRandomized clinical trial including patients 50 years and older, with TSH <0.4 mU/L and normal thyroid hormone concentrations. All patients showed autonomy on thyroid scan. They were randomized either to receive radioiodine (I131) or to be monitored and treated only if they underwent AF or evolved towards overt hyperthyroidism. Primary outcome was the onset of new AF. Secondary outcomes were treatment-induced hypothyroidism rate and health-related quality of life.
results144 patients (mean age 65.3±8.9y, 76% female) were randomized, 74 to surveillance and 70 to treatment. Four patients in the surveillance group and one in the treatment group developed AF (p=0.238). However, the patient who developed AF in the treatment group maintained TSH <0.4 mU/L at AF onset. A post-hoc analysis was carried out and showed that when normalization of TSH was considered, the risk of AF was significantly reduced (p=0.0003). In the surveillance group, several patients showed no classical characteristics associated with AF risk, including age>65y or TSH<0.1mU/L. Of 94 patients treated using radioiodine, 25% developed hypothyroidism during follow-up.
conclusionsDue to recruitment difficulties this study failed to demonstrate that SCH treatment can reduce significantly the incidence of AF in patients older than 50 years with thyroid autonomy even if all the patients who developed AF maintained TSH <0.4 mU/L. This result must be balanced with the increased risk of radioiodine-induced hypothyroidism.
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Registered trials
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