Prevalence of orthostatic hypotension in non-institutionalised elderly aged 80 and over. A diagnostic study using an oscillometric device.

Background: Orthostatic hypotension (OH) is a common disorder, and possibly underdiagnosed. In the elderly, OH has been considered a common cause of falls, fractures, and fear of falling. Its prevalence increases with age, probably related to the number of drug treatments, decreased fluid intake, and the progressive dysfunction of the autonomic nervous system.