Orthostatic hypotension and symptomatic subclinical orthostatic hypotension increase risk of cognitive impairment : an integrated evidence review and analysis of a large older adult hypertensive cohort

Aims Systematically reviewing the literature found Orthostatic Hypotension (OH) to be associated with an increased risk of incident dementia but limited data were available in those at highest risk, the hypertensive oldest-old. Our aim was to analyse the relationship between OH and incident cognitive decline or dementia in this group and to synthesize the evidence base overall. Method and results Participants aged≥ 80 years, with hypertension, were from the Hypertension in the Very Elderly Trial (HYVET) cohort. OH was defined as a fall of >=15mmHg in systolic and or >=7mmHg in diastolic pressure after two minutes standing from a sitting position. Subclinical orthostatic fall with symptoms (SOH) was defined as a fall