• Electromyogr Clin Neurophysiol · Oct 1993

    Autonomic system dysfunction in moderate diabetic polyneuropathy assessed by sympathetic skin response and Valsalva index.

    • T Zgur, D B Vodusek, M Krzan, M Vrtovec, M Denislic, and B Sibanc.
    • University Institute for Clinical Neurophysiology, University Clinical Center, Ljubljana, Slovenia.
    • Electromyogr Clin Neurophysiol. 1993 Oct 1; 33 (7): 433-9.

    Abstract30 patients with moderate diabetic polyneuropathy (Stage 2 according to Dyck) were evaluated for autonomic symptoms, sympathetic skin response (SSR) and Valsalva index. Their SSR were compared to a control group of 30 healthy normal subjects. Neuropathy was confirmed by history, clinical examination and nerve conduction measurements. Although our patients had only moderate polyneuropathy autonomic dysfunction was frequent. Two thirds reported autonomic symptoms. Impotence was present in 60% of males. SSR amplitudes were significantly lower in diabetics (changed in 53%, absent in 20%) than in the controls. SSR abnormality correlated to some clinical and electroneurographic signs of neuropathy, suggesting similar affection of sympathetic and somatic fibres. Valsalva index was abnormal in 37% of patients showing no correlation to clinical, electroneurographic or SSR changes.

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