Cerebrovascular Dysfunction in Atrial Fibrillation.
atrial fibrillation
carbon dioxide
cerebral autoregulation
cerebral blood flow
hypertension
neurovascular coupling
Journal
Frontiers in physiology
ISSN: 1664-042X
Titre abrégé: Front Physiol
Pays: Switzerland
ID NLM: 101549006
Informations de publication
Date de publication:
2020
2020
Historique:
received:
01
05
2020
accepted:
04
08
2020
entrez:
5
10
2020
pubmed:
6
10
2020
medline:
6
10
2020
Statut:
epublish
Résumé
It is now well established that besides being the most common sustained arrhythmia, atrial fibrillation (AF) is a major healthcare burden. Risk of debilitating stroke is increased in AF patients, but even in the absence of stroke, this population is at heightened risk of cognitive decline, depression, and dementia. The reasons for this are complex, multifactorial, and incompletely understood. One potential contributing mechanism is cerebrovascular dysfunction. Cerebral blood flow is regulated by chemical, metabolic, autoregulatory, neurogenic, and systemic factors. The dysfunction in one or more of these mechanisms may contribute to the elevated risk of cognitive decline and cerebrovascular events in AF. This short review presents the evidence for diminished cerebral blood flow, cerebrovascular carbon dioxide reactivity (i.e., cerebrovascular vasodilatory reserve), cerebral autoregulation, and neurovascular coupling in AF patients when compared to control participants in sinus rhythm. Further work is needed to understand the physiological mechanisms underpinning these observations and their clinical significance in atrial fibrillation patients.
Identifiants
pubmed: 33013456
doi: 10.3389/fphys.2020.01066
pmc: PMC7509200
doi:
Types de publication
Journal Article
Review
Langues
eng
Pagination
1066Informations de copyright
Copyright © 2020 Junejo, Lip and Fisher.
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