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Heart Vessels ; 39(2): 185-193, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38087071

RESUMEN

Atrial fibrillation (AF) is often accompanied by thyroid disease (THD). This study aimed to explore the relationship between THD and the occurrence of significant clinical outcomes in patients with AF. This post hoc analysis utilized data from the MISOAC-AF trial (NCT02941978), which enrolled hospitalized patients with AF. Patients were categorized based on their THD history into hyperthyroidism, hypothyroidism, or euthyroidism. Cox regression models were employed to calculate unadjusted and adjusted hazard ratios (aHRs). The primary outcomes of interest included all-cause mortality, cardiovascular death, and hospitalizations during the follow-up period. The study included 496 AF patients (mean age 73.09 ± 11.10 years) with available THD data, who were followed-up for a median duration of 31 months. Among them, 16 patients (3.2%) had hyperthyroidism, 141 (28.4%) had hypothyroidism, and 339 (68.4%) had no thyroid disease. Patients with hypothyroidism exhibited higher rates of hospitalization during follow-up (aHR: 1.57, 95% CI 1.12 to 2.20, p = 0.025) compared to the euthyroid group. Elevated levels of thyroid-stimulating hormone (TSH) were correlated with an increased risk of cardiovascular mortality (aHR: 1.03, 95% CI 1.01 to 1.05, p = 0.007) and hospitalizations (aHR: 1.06, 95% CI 1.01 to 1.12, p = 0.03). Conversely, lower levels of triiodothyronine (T3) were associated with higher risks of all-cause mortality (aHR: 0.51, 95% CI 0.31 to 0.82, p = 0.006) and cardiovascular mortality (aHR: 0.42, 95% CI 0.23 to 0.77, p = 0.005). Among patients with AF, hypothyroidism was associated with increased hospitalizations. Furthermore, elevated TSH levels and decreased T3 levels were linked to higher cardiovascular and all-cause mortality risks, respectively.


Asunto(s)
Fibrilación Atrial , Hipertiroidismo , Hipotiroidismo , Enfermedades de la Tiroides , Anciano , Anciano de 80 o más Años , Humanos , Persona de Mediana Edad , Fibrilación Atrial/complicaciones , Hipertiroidismo/complicaciones , Hipertiroidismo/diagnóstico , Hipertiroidismo/epidemiología , Hipotiroidismo/diagnóstico , Hipotiroidismo/epidemiología , Pronóstico , Factores de Riesgo , Enfermedades de la Tiroides/complicaciones , Enfermedades de la Tiroides/diagnóstico , Enfermedades de la Tiroides/epidemiología , Tirotropina , Ensayos Clínicos como Asunto
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