Subclinical thyroid pathology and atrial fibrillation development in patients with coronary heart disease and arterial hypertension

Aim. To study the structural and functional characteristics of thyroid gland (TG) in patients with coronary heart disease (CHD) and arterial hypertension (AH), in regard to the presence of atrial fibrillation (AF). Material and methods. The study included 90 patients aged over 50 years, with CHD and...

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Bibliographic Details
Main Authors: E. A. Mayskova, E. V. Pushkareva, E. A. Fedotov, Yu. G. Schwarz
Format: Article
Language:Russian
Published: «SILICEA-POLIGRAF» LLC 1970-01-01
Series:Кардиоваскулярная терапия и профилактика
Subjects:
Online Access:https://cardiovascular.elpub.ru/jour/article/view/2056
Description
Summary:Aim. To study the structural and functional characteristics of thyroid gland (TG) in patients with coronary heart disease (CHD) and arterial hypertension (AH), in regard to the presence of atrial fibrillation (AF). Material and methods. The study included 90 patients aged over 50 years, with CHD and AH; 60 patients also had AF. All participants underwent TG ultrasound, assessment of blood levels of thyroid hormones, thyrotropin (TT), anti-thyroid antibodies, and echocardiography (EchoCG). The patients were residents of an iodine-deficient region. Results. In patients with AF, increased TG size and multi-nodal TG pathology were significantly more prevalent, and free thyroxin (T4f) levels were significantly higher than in AF-free participants (especially in women and individuals with increased TG size). Patients with AF and multi-nodal TG pathology demonstrated a significantly increased TG volume and decreased TT levels. Based on EchoCG data, these patients also had significantly lower atrial and left ventricular sizes, as well as a higher ejection fraction, compared to the patients with solitary TG nodes. Conclusion. In AF patients, increased TG function could be explained by functional TG autonomy, especially among individuals with multi-nodal thyroid pathology.
ISSN:1728-8800
2619-0125