• Am J Alzheimers Dis Other Demen · Dec 2012

    Clinical and functional assessment of dysautonomia and its correlation in Alzheimer's disease.

    • Beata Zakrzewska-Pniewska, Malgorzata Gawel, Elzbieta Szmidt-Salkowska, Katarzyna Kepczynska, and Monika Nojszewska.
    • Department of Neurology, Medical University of Warsaw, Warsaw, Poland.
    • Am J Alzheimers Dis Other Demen. 2012 Dec 1; 27 (8): 592-9.

    AbstractThe aims were to assess dysautonomia in Alzheimer's Disease (AD), clinically and electrophysiologically, using sympathetic skin response (SSR) test and R-R interval variation (RRIV) test and to analyze the relationship between symptoms of dysautonomia and SSR/RRIV results. A tota of 54 patients with AD and 37 controls were evaluated using Autonomic Symptoms Questionnaire and SSR/RRIV test. Clinical dysautonomia was observed in 66% of patients (eg, orthostatic hypotension in 34.5%, constipation in 17.2%, urinary incontinence in 13.8%). The SSR test was abnormal in 26%, but the RRIV test was abnormal in 97.7% of cases; there was significant difference in RRIV test results between AD and controls (R mean 8.05% and 14.6%, respectively). In AD, clinical dysautonomia occurs at a various degree, and the abnormal SSR and RRIV test results were not always related to the presence of clinical dysautonomia; this observation points that the tests could be used as a useful tool in the assessment of subclinical dysautonomia.

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