Cognitive performance in orthostatic hypotension: findings from a nationally representative sample

Area of Science:

• Gerontology
• Neurology
• Cardiovascular Health

Background:

• Orthostatic hypotension (OH) is a common condition in older adults, characterized by a significant drop in blood pressure upon standing.
• The relationship between OH and cognitive function, particularly in diverse population samples, requires further investigation.

Purpose of the Study:

• To compare the cognitive performance of individuals with and without orthostatic hypotension (OH) in a nationally representative sample.
• To identify specific cognitive domains affected by OH in an aging population.

Main Methods:

• Cross-sectional analysis of 5,936 participants from The Irish Longitudinal Study on Ageing (TILDA).
• OH defined by a blood pressure drop of ≥20 mmHg systolic or ≥10 mmHg diastolic upon standing.
• Cognitive function assessed across global, executive, processing speed, attention, and memory domains; multivariate analyses controlled for confounders.

Main Results:

• The prevalence of OH was 6.1% in the study population.
• A significant negative association was observed between OH and global cognitive function (P = .01) and memory (P = .002) in women aged 65 and older.
• No significant impact of OH was found on other specific cognitive domains in this cohort.

Conclusions:

• Orthostatic hypotension is associated with poorer global cognitive function and memory in older women, independent of other health factors.
• Further longitudinal research, including cerebral perfusion assessments, is necessary to establish a causal link between OH and cognitive decline.