Background: Hyperprolactinemia is the most common endocrine disorder in hypothalamic-pituitary axis and has been reported in variable levels in patients with overt primary hypothyroidism. We decided to determine the prevalence of hyperprolactinemia and clinical related symptoms in subclinical hypothyroidism patients. Methods: In this cross sectional study, prolactin levels of 481 subclinical hy...

Renal dysfunction, both acute and chronic, is a recognized association of overt hypothyroidism. We describe a patient who developed renal dysfunction at the stage of subclinical hypothyroidism. We emphasize that renal dysfunction is a reflection of tissue hypothyroidism, dissociated with the severity of biochemical hypothyroidism and can manifest in patients with subclinical hypothyroidism. Thi...

OBJECTIVE Subclinical hypothyroidism is a health state that is associated with hypercholesterolemia, infertility, iron-deficiency anemia, and poor obstetric outcome. This article summarizes the results of a prospective clinical investigation of whether treatment of subclinical hypothyroidism and iron-deficiency anemia with a combination of levothyroxine plus iron salt would be superior to each ...

Subclinical hypothyroidism is defined as a serum thyroid stimulating hormone (TSH) concentration above the upper limit of its reference range plus a serum free thyroxine (FT4) concentration within its reference range. There are several controversies regarding the effect of subclinical hypothyroidism on the risk of heart failure, cardiovascular disease risk, cholesterol metabolism and mortality,...

BACKGROUND Maternal subclinical hypothyroidism during pregnancy is associated with various adverse outcomes. Recent consensus guidelines advocate universal thyroid function screening during pregnancy. There are no data from Iran about the prevalence of thyroid hypofunction in pregnancy. This study aims to find the prevalence of thyroid dysfunction. MATERIALS AND METHODS In this descriptive cr...

BACKGROUND The impact of subclinical hypothyroidism on the cardiovascular risk is still debated. We aimed to measure the relationship between subclinical hypothyroidism and the left atrial (LA) pressure. METHODS The LA pressures and thyroid function were measured in consecutive patients undergoing atrial fibrillation (AF) ablation, who did not have any known heart failure, structural heart di...

BACKGROUND Subclinical hypothyroidism is the most common thyroid dysfunction in the general population. The relationship between overt thyroid dysfunction and hypertension is generally understood. Besides high blood pressure, non-dipper hypertension is known to increase cardiovascular risk. Our aim is to investigate daily blood pressure changes and the frequency of non-dipping patterns in patie...

INTRODUCTION  Thyroid hormone deficiency can lead to the impairment of cardiac function. OBJECTIVES  The aim of the study was to determine the left atrial (LA) mechanical function in patients with subclinical hypothyroidism (SHT) and overt hypothyroidism (OHT) and investigate associations of LA mechanical function with diastolic function.  PATIENTS AND METHODS  Twenty‑six patients with newl...

CONTEXT Earlier, we have shown an increased prevalence of previously diagnosed hypothyroidism in common bile duct (CBD) stone patients and a delayed emptying of the biliary tract in hypothyroidism, explained partly by the missing prorelaxing effect of T(4) on the sphincter of Oddi contractility. OBJECTIVE In this study, the prevalence of previously undiagnosed subclinical hypothyroidism in CB...

CONTEXT Previous studies have suggested that subclinical abnormalities in thyroid-stimulating hormone levels are associated with detrimental effects on the cardiovascular system. OBJECTIVE To determine the relationship between baseline thyroid status and incident atrial fibrillation, incident cardiovascular disease, and mortality in older men and women not taking thyroid medication. DESIGN,...