Reliability and reactivity of the prefrontal hemodynamic responses in essential hypertension: a functional near infrared spectroscopy study
In: Journal of the American Society of Hypertension : JASH, Jg. 9 (2015-06-11), Heft 10
Online
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Zugriff:
Prefrontal (PFC) cerebral vasoreactivity may be altered in hypertension but has not been studied during postural change and carbon dioxide (CO2) rebreathing. In this study, a dual procedure of 5% CO2 rebreathing with positional change (standing to supine and reverse) was performed on normotensive (N = 24) and essential hypertensive males (N = 16) (18-55 years) to assess reliability of PFC responses using functional near infrared spectroscopy. The groups (matched on age levels, N = 13) were also compared on their hemodynamic reactivity (change of oxyhemoglobin or total hemoglobin as a function of change in end tidal CO2). Test-retest reliability within one session and 7 days later was moderate to high (intraclass correlation coefficient = .63-.901) in both normotensive and hypertensive groups for all hemodynamic measures; whereas reliability of reactivity measures for oxyhemoglobin and total hemoglobin was moderate (intraclass correlation coefficient = .68-.762). Functional near infrared spectroscopy-measured PFC hemodynamic responses are highly reproducible in normotensive and adult essential hypertensive males.
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Reliability and reactivity of the prefrontal hemodynamic responses in essential hypertension: a functional near infrared spectroscopy study
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Autor/in / Beteiligte Person: | Haennel, Robert G. ; Warren, Sharon ; Bhambhani, Yagesh ; Grant, Hercules ; Singhal, Anthony |
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Zeitschrift: | Journal of the American Society of Hypertension : JASH, Jg. 9 (2015-06-11), Heft 10 |
Veröffentlichung: | 2015 |
Medientyp: | unknown |
ISSN: | 1878-7436 (print) |
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