Abstract
To evaluate the relationship between autonomic neuropathy, and biochemical and radiological parameters of secondary hyperparathyroidism, we examined 19 predialysis and 24 hemodialysis non-diabetic uremic patients. Autonomic neuropathy was assessed using four cardiovascular tests. Ten predialysis and 15 hemodialysis patients showed abnormalities in one or more autonomic tests. Ca, Ca 2+, P, alkaline phosphatase, immunoreactive parathyroid hormone and osteocalcin did not significantly differ in uremic patients with and without abnormal autonomic test results. Radiological markers of hyperparathyroidism such as acro-osteolysis (score A) and subperiosteal resorption (score B) were more common in patients with abnormalities in autonomic tests than in patients without. When predialysis and hemodialysis patients were considered separately, the correlation between score A, score B and autonomic neuropathy was confirmed only in hemodialysis patients. In conclusion, autonomic neuropathy is not related to biochemical parameters of hyperparathyroidism, while it appears correlated with radiological signs of osteodystrophy, suggesting a possible pathogenetic link between autonomic neuropathy and secondary hyperparathyroidism.
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