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Updated: Jun 21, 2026

Ultrasound Assessment of Endothelial Function: A Technical Guideline of the Flow-mediated Dilation Test
Published on: April 27, 2016
[Markers of endothelial function in hypothyroidism].
Mônica Dias Cabral1, Patrícia de Fátima Santos Teixeira, Sandra Pereira Leite
1Serviço de Endocrinologia, Hospital Universitário Clementino Fraga Filho (HUCFF), Departamentode Clínica Médica, Faculdadede Medicina, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brasil. mdcabral@globo.com
Endothelial dysfunction is linked to cardiovascular disease and atherosclerosis. Assessing endothelial function may help detect early cardiovascular changes in hypothyroidism, but more research is needed.
Area of Science:
- Cardiovascular Science
- Endocrinology
- Vascular Biology
Context:
- The endothelium plays a crucial role in vascular health, regulating tone, inflammation, and thrombosis.
- Endothelial dysfunction is a key factor in atherosclerosis development.
- Hypothyroidism is associated with elevated cardiovascular risk.
Purpose:
- To explore the relationship between thyroid function and endothelial function.
- To highlight the potential of endothelial function assessment in detecting preclinical cardiovascular changes in thyroid dysfunction.
- To discuss the need for large-scale trials on thyroid status, endothelial function, and levothyroxine treatment.
Summary:
- Recent advancements offer accessible methods to measure endothelial function.
- Studies suggest a link between thyroid status and endothelial function.
- Further large multicenter, placebo-controlled prospective trials are required to confirm these findings and evaluate levothyroxine's impact.
Impact:
- Improved understanding of cardiovascular risk in hypothyroidism.
- Potential for novel diagnostic tools for preclinical cardiovascular disease.
- Guidance for future clinical trials investigating thyroid hormone replacement therapy.
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