Agreement in cerebrovascular reactivity assessed with diffuse correlation spectroscopy across experimental paradigms improves with short separation regression.
cerebral blood flow
cerebrovascular reactivity
diffuse correlation spectroscopy
Journal
Neurophotonics
ISSN: 2329-423X
Titre abrégé: Neurophotonics
Pays: United States
ID NLM: 101632875
Informations de publication
Date de publication:
Apr 2023
Apr 2023
Historique:
received:
27
09
2022
accepted:
07
03
2023
medline:
11
4
2023
entrez:
10
4
2023
pubmed:
11
4
2023
Statut:
ppublish
Résumé
Cerebrovascular reactivity (CVR), i.e., the ability of cerebral vasculature to dilate or constrict in response to vasoactive stimuli, is a biomarker of vascular health. Exogenous administration of inhaled carbon dioxide, i.e., hypercapnia (HC), remains the "gold-standard" intervention to assess CVR. More tolerable paradigms that enable CVR quantification when HC is difficult/contraindicated have been proposed. However, because these paradigms feature mechanistic differences in action, an assessment of agreement of these more tolerable paradigms to HC is needed. We aim to determine the agreement of CVR assessed during HC, breath-hold (BH), and resting state (RS) paradigms. Healthy adults were subject to HC, BH, and RS paradigms. End tidal carbon dioxide (EtCO Strong agreement ( More tolerable experimental paradigms coupled with regression of systemic/extracerebral signal contributions may offer a viable alternative to HC for assessing CVR.
Identifiants
pubmed: 37034012
doi: 10.1117/1.NPh.10.2.025002
pii: 22092GRR
pmc: PMC10079775
doi:
Types de publication
Journal Article
Langues
eng
Pagination
025002Subventions
Organisme : NHLBI NIH HHS
ID : R01 HL152322
Pays : United States
Informations de copyright
© 2023 The Authors.
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