to assess the influence of diurnal changes in the autonomic nervous system on the qt interval , 24 hour dynamic electrocardiographic monitoring was performed in six pacemaker dependent patients with normally innervated hearts , in six cardiac transplant patients with anatomically denervated hearts ( but which respond to circulating catecholamines ) , and in nine diabetic patients with confirmed autonomic neuropathy .
C0018787
hearts
C0018823
cardiac transplant