Active clinical trials for "Hyperparathyroidism"

The purpose of this registry is to create a database that collects clinical data to improve knowledge about primary hyperparathyroidism.

The MBD-5D is a prospective observational study with a case-cohort and a cohort design. Eligible patients are receiving hemodialysis and have secondary hyperparathyroidism. The study's three goals are (1) to record the patients' characteristics, and variation in the patterns of their treatment; (2) to analyze factors associated with variation in those medical practice patterns; and (3) to identify practice patterns and other factors that affect hospitalization, mortality, and other patient-level outcomes.

This is a multicentre, descriptive observational study of adult patients with primary HPT receiving cinacalcet in clinical practice in a number of countries in Europe. Patients will be enrolled within 1 month of initiating cinacalcet treatment, and data will be collected prospectively for up to 1 year from initiation. Data will continue to be collected from patients discontinuing cinacalcet before the end of this period.

This is a research study to investigate cardiovascular health in people with mild hyperparathyroidism. Previous research has suggested that severe hyperparathyroidism may be associated with abnormalities in the heart and blood vessels. It is unclear whether mild hyperparathyroidism affects cardiovascular health. This study involves the investigation of the heart and blood vessels of people with mild hyperparathyroidism. Various non-invasive laboratory and radiological test to assess cardiovascular and bone health will be done at set intervals over the course of 2 years. It is our hypothesis that patients with primary hyperparathyroidism will have subtle abnormalities in their cardiovascular system. Using state-of-the art techniques that are sufficiently sensitive to detect these subtle abnormalities, we will define cardiovascular features of this disease that have, up to now, eluded clear definition. We expect taht the extent of these findings will be related to the severity of the underlying primary hyperparathyroidism. We further hypothesize that cardiovascular manifestations may regress with successful cure of the hyperparathyroid state.

The aim of this study is to evaluate the prevalence of secondary hyperparathyroidism among patients with diabetic nephropathy.

Through multi-center randomized controlled trial studies on preemptive surgical intervention in patients with chronic kidney disease (CKD) - secondary hyperparathyroidism (SHPT), to precisely evaluate the safety and effectiveness during perioperative period, and the long-term outcomes by 1-year follow-up. The follow-ups include the evaluation of the overall quality of life, calcium and phosphorus metabolism, hyperparathyroidism level, vitamin D metabolism, bone mineral density, soft tissue and vascular calcification.

The purpose of the study is to determine a possible input of C11-Choline PET/CT in identification and localization of a parathyroid adenoma (PTA). Preoperative localization of a PTA has been previously documented in multiple series, and is usually based on scintigraphy and on US. Currently, the conventional technique for localization of a PTA is a dual-isotope scan with Tc99m-MIBI and Tc99m pertechnetate. This study is acquired over at least 3 hours, includes two i.v. injections and the patient has to stay 15-30 min per acquisition under the camera. In addition, there is no anatomical imaging and further correlation with US is usually recommended. In contrast, PET/CT study with C11-Choline takes as long as 10 min., includes one injection, and provides data of higher resolution of functional (PET) and anatomical imaging (CT). Furthermore, dosimetric data shows that the total effective dose from Tc99mMIBI and Tc99m pertechnetate injection is (without CT): 0.5957 rem; and from C11-Choline injection and CT of a chest is: 0.3128 - 0.8628rem.

The development of outpatient surgery has become a national priority, with the objective of an ambulatory surgery rate of around 50% in 2016, whereas this rate reached only 37.7% in 2010. In the context of the management of primary hyperparathyroidism, there are two possible approaches. The first, which is commonly performed on an outpatient basis, consists in approaching only the pathological gland, if it was first identified by scintigraphy and ultrasound (which is the case in one patient in two), without exploring the others parathyroid glands. The reference technique consists in exploring the 4 parathyroid sites by transverse cervicotomy. Although more invasive, it minimizes the risk of failure due to the lack of knowledge of multi-glandular forms of the disease (15 to 20%), whose preoperative diagnosis is difficult. This reference technique is poorly performed on an outpatient basis while it lends itself to this type of management because of the superficial character of the operative site, a short operating time, moderate postoperative pain, rapid return oral nutrition and exceptional and early serious complications (delay <24 h for cervical hematoma, <24 h for hypocalcemia and immediate diagnosis of recurrent palsy). In this study, the investigators hypothesize that parathyroidectomy with 4-gland parathyroid exploration is feasible by ensuring patient safety. The investigators also believe that outpatient management will not lead to any difference after 3-month surgery, but will reduce hospitalization costs while increasing patient satisfaction with conventional care. To do so, the investigators carried out an observational cohort study of patients with an indication of parathyroidectomy wo will undergo outpatient management or conventional management (stay overnight in hospital) to inform all of these data.

Secondary hyperparathyroidism (HPT) is a known complication of chronic renal failure. Elevated concentrations of parathyroid hormone (PTH) play a role not only in the pathogenesis of renal bone disease, but also in the development of cardiovascular risk factors such as disturbed lipid metabolism, glucose intolerance, and hypertension. HPT is also known to play an important role in the development of structural abnormalities of both large arteries and the heart (left ventricular hypertrophy, interstitial fibrosis). In the last couple of years there has been increasing evidence from animal studies that the endothelium is a target organ of PTH. Hypothesis: PTH has clinically relevant effects on renal hemodynamics, renal function and endothelial function. Aims: To evaluate the effect of parathyroidectomy (PTX) on renal hemodynamics in stable renal transplant recipients To evaluate the effect of PTX on endothelial function in stable renal transplant recipients/chronic kidney disease (CKD) stage 5 patients To evaluate the effect of PTX on blood pressure in stable renal transplant recipients/CKD stage 5 patients

Results from KDOQI guidelines, parathyroid hormone (PTH) level within target range is 150-300pg/ml. Both lower PTH levels and higher PTH levels were associated with higher risk of all-cause mortality. However, in out of target range, it is still unknown which mortality higher. so, in this prospective, observational clinical trial study. the investigators will observe the mortality and cardiovascular incidence rate between SHPT(>800pg/ml) and low serum PTH levels(<60pg/ml). Both two groups of patients will receive a reasonable treatment according to the suggestions in K/DOQI guidelines.