CONTEXT/OBJECTIVE Most patients with subclinical hypothyroidism are regularly monitored when treatment is not started. We have studied how interval between follow-up visits and how different T(4) estimates influence diagnostic outcome in a cohort of patients with untreated subclinical hypothyroidism, and studied whether assessment of clinical symptoms and signs aids evaluation of an individual ...

Background & Aims: Since at early pregnancy (<20 week) fetal thyroid gland is undeveloped, normal development of the Fetal brain is highly dependent on maternal thyroid hormones. There are excessive adverse perinatal outcomes associated with overt and subclinical hypothyroidism such as increase of Abortion, preeclampsia, placenta Abruption, LBW, preterm labor, impaired fetal neuropsychological ...

It is well known that respiratory functions are affected at clinical hypothyroidism. Simple spirometry which is a cheap and simple method is performed to the patients with subclinical hypothyroidism in order to determine if respiratory functions are affected or not. Recently diagnosed 87 patients with clinical hypothyroidism, 120 patients with subclinical hypothyroidism and 60 healthy subjects ...

OBJECTIVE To evaluate the effects of levothyroxine (L-T4) replacement in echocardiographic parameters of middle-aged women with subclinical hypothyroidism (SH). SUBJECTS AND METHODS This was a randomized, double-blind, placebo-controlled study. Echocardiographic evaluation was carried out at baseline and one year after restoration of euthyroidism. Thirty-three women with SH were assigned to o...

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...

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...