Objectives: Dementia with Lewy bodies (DLB) is the second most common degenerative cause of dementia, whereas lower urinary tract (LUT) function in DLB patients has not been fully delineated. We investigated LUT function in DLB by clinical-urodynamic observations.
Methods: We examined 32 patients with DLB (23 men, 9 women; aged 59-86 [mean, 75.9] years; disease duration, 0.2-17 [3.3] years). All patients underwent an electromyography-cystometry, and 21 patients underwent the sphincter motor unit potential analysis.
Results: Ninety-one percent of patients had LUT symptoms: nighttime frequency (>8 times), 84%, and urinary incontinence (>1 per week), 50%. Detrusor overactivity was revealed in 87.1%, whereas postvoid residual was minimal. Neurogenic changes were shown in 50%.
Conclusion: LUT dysfunction is a common feature in DLB, attributable not only to dementia and immobility, but also to central and peripheral types of somato-autonomic dysfunction.
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