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Parathormone (PTH) is a very potent uraemic toxin, which affects heart structure and function. PTH also plays the role in uraemic autonomic neuropathy (AN). The aim of the study was to investigate the relationship between high PTH level and AN assessed with frequency domain measures of heart rate variability (HRV).A 24-h ECG was performed in 40 HD (F=19, M=21) patients aged 49±11 years, duration of...