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February 24, 2015American Journal of Hypertension

Lower Blood Pressure Is Associated With Smaller Subcortical Brain Volumes in Older Persons

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Why the study?

Are lower blood pressure parameters associated with reduced cortical and subcortical brain volumes in older persons with mild cognitive deficits?

Population

220 older persons with mild cognitive deficits using antihypertensive medication, mean age 80.7, 43% men…

Design

Cross-sectional

Key result

Lower systolic and diastolic blood pressure and mean arterial pressure were significantly associated with reduced volumes of the thalamus and putamen (all P≤0.01) and hippocampus (P=0.035).

Authors

JFJessica C. Foster‐DingleyJGJeroen van der GrondJMJustine Moonen

Discussion

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Overview

May warrant caution with intensive BP lowering in elderly with mild deficits; leaves open causality, needing longitudinal confirmation.

Study Design

Type

Cross-Sectional (n=220)

Structured PICO

Are lower blood pressure parameters associated with reduced cortical and subcortical brain volumes in older persons with mild cognitive deficits?

P
Population
220 older adults (mean age 80.7 years) with mild cognitive deficits using antihypertensive medication, evaluated in a cross-sectional study.
E
Exposure
Blood pressure parameters (systolic BP, diastolic BP, and mean arterial pressure)
O
Outcome
Cortical and subcortical brain volumes determined on 3DT1-weighted brain magnetic resonance imaging scanssurrogate

Main Result

p-value: p=≤ 0.01

In older persons with mild cognitive deficits on antihypertensive therapy, lower blood pressure is associated with reduced subcortical brain volumes, suggesting potential risks of aggressive blood pressure lowering in this population.

Cite This Study

Foster‐Dingley et al. (2015) conducted a cross-sectional in Mild cognitive deficits (n=220). Blood pressure was evaluated on Cortical and subcortical brain volumes (p=≤ 0.01). Lower systolic and diastolic blood pressure and mean arterial pressure were significantly associated with reduced volumes of the thalamus and putamen (all P≤0.01) and hippocampus (P=0.035).

synapsesocial.com/papers/6a1faa28ccd4fd538e0752f5https://doi.org/10.1093/ajh/hpv006
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