Active clinical trials for "Hypothyroidism"

Some people with hypothyroidism have persistent symptoms despite adequate treatment with thyroid hormones. We are testing whether giving calcitonin to such people will improve their quality of life.

The purpose of this research study is to learn about the effects of treating subclinical hypothyroidism (SCH) with thyroid hormone replacement in children and adolescents with Down syndrome (DS). We hypothesize that treatment of SCH with thyroid hormone replacement will improve cardiometabolic health and quality of life.

Some recommendations of expert consensus on subclinical hypothyroidism (SH) are controversial in those areas with not enough information to reach a conclusion, such as not recommending treatment with thyrotrophic hormone of 4-10 mUI/L and free thyroxin in normal range. The body changes or symptoms at this stage are often mistaken as aging. There are studies showing significant changes in heart (slow rate, lower ejection fraction, diastolic dysfunction); hypercholesterolemia, dysfunction cognitive abilities (memory attention…). The prevalence of SH increases with age, reaching 14% over 65 years old. This age group increase as the population ages highlights the need for evidence to improve recommendations for the elderly. NEUROPSI is a validated neuropsychological test sensible for mild cognitive alterations. It can be applied to individuals with little schooling. This study aims to determine positive change in cognitive abilities (NEUROPSI), ejection fraction, and body percent of lean and adipose tissue without adverse effects, placebo versus thyroxin supplement to keep thyroid-stimulating hormone (TSH) between 0.5-2.5 mUI/L in elderly with TSH 4-10 mIU/L.

This is a clinical study comparing targeted levothyroxine dosing based on thyroid anatomy as visualized on ultrasound (normal vs. ectopic/sublingual vs. athyreosis) to empiric levothyroxine dosing in infants with congenital hypothyroidism. Patients enrolled in the study for targeted dosing will be compared to controls obtained by retrospective chart review. The main outcome is to determine if there is a difference in the frequency of over-treatment and under-treatment during the first 6 months of therapy.

The objective of this study was to analyze the features of monotherapy with L-T4 in comparison with combined therapy with L-T4 and L-T3 in patients with primary hypothyroidism.

This study compares two different brands of thyroxine (thyroid hormone). Currently, pharmacists may be substituting generic formulations of thyroid hormone without your doctor knowing about this. Although a small difference in thyroid function is not significant in most healthy children, adolescents and adults, in infants and toddlers even a small difference in thyroid function can have important harmful consequences on brain development. The purpose of the present study is to learn whether the difference between brands of thyroid hormone that are currently being substituted is sufficient to cause a difference in thyroid function.

Children with levothyroxine (T21) have developmental delay and other functional gastrointestinal (GI) issues that may negatively affect L-T4 tolerability and absorption. For an age group unable to swallow tablets whole by mouth, tablets must be crushed and suspended in water, breast milk or formula for administration in order to treat children with hypothyroidism. For this age group, ease of administration may have a significant impact on compliance and ability to remain euthyroid. We propose that Tirosint-SOL® will be more favorably received due to ease of administration, improved tolerability and palatability, therefore leading to improved adherence when compared to L-T4 tablets.

Patients that require treatment for cancers of the head and neck often require a combination of surgery and/or radiation and chemotherapy. Hypothyroidism is one of the most common complications, and has been associated with post-operative complications such as wound healing problems, fistula formation, and decreased quality of life and survival. Several studies have examined hypothyroidism after radiation to the head and neck, but few have examined this after non-thyroid head and neck surgery. Head and neck resection is theorized to devascularize the thyroid, thus resulting in post-operative hypothyroidism. Synthroid is a synthetic thyroid hormone often used in cases of patients with proven hypothyroidism and after surgical thyroid removal. It's use has been in effect and studied for over fifty years. Treatment algorithms for hypothyroidism are well published. However, treatment of subclinical hypothyroidism (elevated TSH with normal or near-normal T3/T4) is controversial. The rate of subclinical hypothyroidism after non-thyroid head and neck surgery is high (up to 20%), and is associated with post-operative complications as noted above. Therefore the investigators propose a double blinded randomized controlled trial comparing outcomes of patients that develop subclinical hypothyroidism after head and neck surgery, who are given a standardized dose of synthroid treatment versus those treated with placebo. The main outcomes to be examined are post-operative complications (wound healing issues, fistula formation), survival, and quality of life measures.

Estimate the proper thyroid screening method during pregnancy. Evaluate if maternal subclinical hypothyroidism treatment during pregnancy result in improved pregnancy outcome and cognitive function in the children.

Renal and cardiovascular effects of subclinical hypothyroidism, defined by a high TSH and normal T4 are less known and the indications for treatment of subclinical hypothyroidism are subject to controversies. The investigators propose to assess whether the hormone replacement for subclinical hypothyroidism in patients with chronic kidney disease is beneficial for hemodynamic and renal functions and which mechanisms are involved. Isotopic measurements of glomerular filtration and renal blood flow and an hemodynamic evaluation by transthoracic echocardiography and flow-mediated vasodilation will be carried out before and 6 months after substitution.