Key result
Subclinical hypothyroidism is independently associated with increased epicardial adipose tissue thickness compared to healthy euthyroid controls.
Why the study?
Is subclinical hypothyroidism associated with increased epicardial adipose tissue thickness in adults?
Case-Control (n=102)
Yes
Is subclinical hypothyroidism associated with increased epicardial adipose tissue thickness in adults?
Subclinical hypothyroidism is independently associated with increased epicardial adipose tissue thickness, suggesting a potential mechanism for increased cardiovascular risk in these patients.
Answers are grounded in this paper and cite their sources.
May link subclinical hypothyroidism to CV risk via epicardial fat; hypothesis-generating and should not yet change practice.
BACKGROUND AND OBJECTIVES: Subclinical hypothyroidism (SH) is considered to be a potential risk factor for cardiovascular disease. Epicardial adipose tissue (EAT) thickness is also closely related to cardiovascular disorders. The aim of this study was to evaluate whether SH is associated with higher EAT thickness. SUBJECTS AND METHODS: Fifty-one consecutive patients with SH and 51 healthy control subjects were prospectively enrolled into this trial. Thyroid hormone levels, lipid parameters, body mass index, waist and neck circumference, and EAT thickness measured by echocardiography were recorded in all subjects. RESULTS: Mean EAT thickness was increased in the SH group compared to the control group (6.7±1.4 mm vs. 4.7±1.2 mm, p<0.001). EAT thickness was shown to be correlated with thyroid stimulating hormone level (r=0.303, p=0.002). Multivariate logistic regression analysis revealed that EAT thickness was independently associated with SH {odds ratio (OR): 3.87, 95% confidence interval (CI): 1.92-7.78, p<0.001; OR: 3.80, 95% CI: 2.18-6.62, p<0.001}. CONCLUSION: Epicardial adipose tissue thickness is increased in patients with SH compared to control subjects, and this increase in EAT thickness may be associated with the potential cardiovascular adverse effects of SH.
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Belen et al. (2015) conducted a case-control in Subclinical hypothyroidism (n=102). Subclinical hypothyroidism vs. Euthyroid healthy controls was evaluated on Epicardial adipose tissue (EAT) thickness (OR 3.87, 95% CI 1.92-7.78, p=<0.001). Subclinical hypothyroidism is independently associated with increased epicardial adipose tissue thickness compared to healthy euthyroid controls.
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