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Updated: May 20, 2026

Integration of Brain Tissue Saturation Monitoring in Cardiopulmonary Exercise Testing in Patients with Heart Failure

Integration of Brain Tissue Saturation Monitoring in Cardiopulmonary Exercise Testing in Patients with Heart Failure

Published on: October 1, 2019

Sleep apnea and cognitive function in heart failure.

Krysten M Knecht¹, Michael L Alosco, Mary Beth Spitznagel

¹Department of Psychology, Kent State University, Kent, OH 44242, USA.

Cardiovascular Psychiatry and Neurology

|June 30, 2012

Summary

This summary is machine-generated.

Heart failure patients with sleep apnea show worse attention compared to those without. This suggests a higher risk of cognitive impairment in patients with both conditions.

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Area of Science:

Cardiology
Neurology
Sleep Medicine

Background:

Heart failure (HF) is linked to cognitive deficits.
Sleep apnea is associated with reduced cognitive function.
The combined effect of HF and sleep apnea on cognition is not well understood.

Purpose of the Study:

To investigate the impact of comorbid sleep apnea on cognitive function in heart failure patients.
To compare cognitive performance between HF patients with and without sleep apnea.

Main Methods:

172 older adults with HF were included.
Participants were divided into two groups: HF with sleep apnea, and HF alone.
Cognitive tests assessed attention, executive functioning, and memory.

Main Results:

Patients with both HF and sleep apnea performed significantly worse on attention tests.
This finding remained significant after adjusting for demographic and medical factors.

Conclusions:

Comorbid sleep apnea may increase the risk of cognitive impairment in heart failure patients.
Further research is needed to understand the mechanisms and clinical outcomes associated with this interaction.