Urinary incontinence associated with dementia.

Urinary incontinence is common in patients with dementia and is more prevalent in demented than in nondemented older individuals. It occurs with equal or greater frequency in males than in females, and this contrasts with the female preponderance in community-based, general older populations. Since the etiology of incontinence in dementia is multifactorial, a comprehensive assessment of factors within and outside the lower urinary tract is essential. A careful clinical evaluation is sufficient to guide treatment in most cases. Further research is needed to determine the role of simple cystometry and more complex urodynamic investigation in these patients. Research on the management of urinary incontinence in demented patients has focused almost exclusively on toileting programs and drug treatments for detrusor hyperactivity. To date, anticholinergic and antispasmodic medications have not been shown to be effective in treating incontinence in demented persons. However, the few studies undertaken have been in the most severely mentally and physically deteriorated patients, and it is possible that these medications have greater efficacy in less impaired individuals. Prompted voiding regimens have been shown to reduce incontinence by an average of 32% and appear to be a useful approach in managing incontinence in some of these patients. However, unless staff management systems are employed, staff compliance with these programs diminishes with time and the labor costs involved may limit their applicability in nursing homes. Patients who are the most severely cognitively impaired, least mobile, and have the greatest frequency of incontinence derive the least benefit from toileting programs, and palliative measures may be more appropriate in these cases.