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Clinical Trial Summary

This is a single-site non-randomized open label pilot study. The investigators will use accelerometer-based instrumented gait analysis and computerized cognitive testing to study the interaction of motor and cognitive dysfunction in Parkinson disease dementia (PDD), and the effect of rivastigmine on motor and cognitive performance. All study participants will be tested for motor and cognitive performance at baseline (arm 1). A subgroup of study participants will then be treated with rivastigmine for 12 weeks (arm 2), and the effect of this treatment on gait measures and cognitive measures will be analyzed at the follow-up visit 12 weeks after the baseline visit. Specifically, we will determine which components of motor and cognitive impairment are associated with each other, and which components of the two domains respond to rivastigmine-mediated stimulation of cholinergic neurotransmission.


Clinical Trial Description

This is a single-site non-randomized open label clinical trial in patients with Parkinson disease (PD) and mild to moderate cognitive deficits, designed to 1) identify associations between cognitive impairment and gait impairment, and 2) identify cognitive domains and gait measures that improve after 12 weeks of treatment with rivastigmine. Aim 1 will be addressed with a cross-sectional approach (arm 1, baseline only, all participants), and aim 2 will be addressed with a longitudinal interventional approach (arm 2, 12 week-treatment with rivastigmine, subgroup of participants). Patients with idiopathic Parkinson disease (PD) and mild to moderate cognitive deficits amounting to PD dementia (PDD) will be enrolled. At baseline (arm 1), all participants will perform the timed-up-and-go test (TUG), wearing a light-weight sensor device strapped to the lower back with a neoprene belt. Participants will also complete a computerized cognitive test battery (NeuroTrax Mild Cognitive Impairment & Early Dementia Battery by MindStreams). A subgroup of participants (arm 2) will then be treated with transdermal rivastigmine for 12 weeks, with dose increases every 4 weeks and titration up to 13.3 mg/24h, if tolerated. The same assessment (quantitative gait testing and NeuroTrax computerized cognitive test battery) will be repeated after 12 weeks, with the participant on a stable dose of transdermal rivastigmine. The investigators will analyze correlation of iTUG measures and cognitive measures at baseline (cross-sectional analysis). The investigators will also analyze change in iTUG measures and cognitive measures between baseline and follow-up for the subgroup of participants in arm 2 (in other words, before and after rivastigmine treatment; longitudinal analysis). ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03840837
Study type Interventional
Source University of Maryland, Baltimore
Contact
Status Completed
Phase Phase 4
Start date May 2, 2019
Completion date April 1, 2020

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