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Effects of Parathyroidectomy on Cardiovascular Risk Factors in Primary Hyperparathyroidism

2014-08-27 03:16:20 | BioPortfolio

Summary

Primary hyperparathyroidism (PHPT) is associated with increased cardiovascular morbidity. The benefit of surgical treatment in this respect is unclear.

This study was performed to evaluate the impact of parathyroidectomy (PTX) on cardiovascular risk profile.

Description

Patients with primary hyperparathyroidism (PHPT) have been shown to have an increased morbidity and mortality mainly due to cardiovascular disease. The precise mechanism of cardiovascular disease in PHPT is not well understood and probably multifactorial. Functional or structural alterations of vascular endothelial and smooth muscle cells may impair the vascular reactivity and lead to accelerated atherogenesis. Several cardiovascular risk factors such as obesity, hypertension, insulin resistance and hyperlipidemia are more prevalent in PHPT compared with controls.Patients with severe form of PHPT had a greater probability of metabolic syndrome (MS) and insulin resistance than patients with mild PHPT and eucalcemic subjects. Although the excess in cardiovascular mortality is significantly and independently related to serum calcium, the connection between the biochemical disturbances and the cardiovascular disorders in PHPT patients is not necessarily a cause-and-effect relationship. Indeed, the impact of surgical cure of hyperparathyroidism on cardiovascular risk factors and mortality is controversial. Some studies suggest that hypertension, dyslipidemia, and derangement of glucose metabolism improve after removal of overactive parathyroid tissue. Others have shown that cardiovascular risk markers remained unaltered after parathyroidectomy (PTX).

The aim of this study was to evaluate whether successful PTX is associated with decreased cardiovascular risk. We investigated indices of metabolic syndrome and insulin resistance as well as various cardiovascular risk factors in patients with manifest PHPT before and one year after successful PTX.

Study Design

Observational Model: Case Control, Time Perspective: Prospective

Conditions

Primary Hyperparathyroidism

Location

Endocrine Institute, Haemek Medical Center
Afula
Israel
18101

Status

Completed

Source

HaEmek Medical Center, Israel

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:16:20-0400

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Medical and Biotech [MESH] Definitions

A condition of abnormally elevated output of PARATHYROID HORMONE (or PTH) triggering responses that increase blood CALCIUM. It is characterized by HYPERCALCEMIA and BONE RESORPTION, eventually leading to bone diseases. PRIMARY HYPERPARATHYROIDISM is caused by parathyroid HYPERPLASIA or PARATHYROID NEOPLASMS. SECONDARY HYPERPARATHYROIDISM is increased PTH secretion in response to HYPOCALCEMIA, usually caused by chronic KIDNEY DISEASES.

A condition of abnormally elevated output of PARATHYROID HORMONE due to parathyroid HYPERPLASIA or PARATHYROID NEOPLASMS. It is characterized by the combination of HYPERCALCEMIA, phosphaturia, elevated renal 1,25-DIHYDROXYVITAMIN D3 synthesis, and increased BONE RESORPTION.

A fibrous degeneration, cyst formation, and the presence of fibrous nodules in bone, usually due to HYPERPARATHYROIDISM.

Abnormally elevated PARATHYROID HORMONE secretion as a response to HYPOCALCEMIA. It is caused by chronic KIDNEY FAILURE or other abnormalities in the controls of bone and mineral metabolism, leading to various BONE DISEASES, such as RENAL OSTEODYSTROPHY.

The primary responsibility of one nurse for the planning, evaluation, and care of a patient throughout the course of illness, convalescence, and recovery.

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