Sleep in older adults with Alzheimer's disease.

Sleep in older adults with Alzheimer's disease can often be extremely fragmented, thus disturbing normal sleep-wake rhythms. This poor-quality sleep is challenging for caregivers and frequently results in admitting older adults to long-term care institutions. Many variables, such as genes, medications, depression, and environmental factors, influence sleep in persons with Alzheimer's disease. Interventions, such as exposure to light, melatonin therapy, sleep hygiene, and physical activity, are commonly used to treat or to prevent sleep problems. Neuroscience nurses can play an important role in assessing sleep characteristics and related factors, educating caregivers and staff, providing family members with emotional support, and conducting research.