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December 15, 2006Journal of Applied Physiology312 citations

Peak vs. total reactive hyperemia: which determines the magnitude of flow-mediated dilation?

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Why the study?

Does shear stimulus area under the curve (AUC) or peak shear rate determine the magnitude of flow-mediated dilation in healthy males?

Population

10 healthy males for the duration manipulation experiment and 8 healthy males for the peak manipulation…

Comparison

Reactive hyperemia duration manipulation and… vs Different durations and peak shear rates within…

Design

Other

Authors

KPKyra E. PykeMTMichael E. Tschakovsky

Discussion

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Overview

Requires accounting for shear AUC when interpreting FMD; leaves open relevance to patient populations.

Structured PICO

Does shear stimulus area under the curve (AUC) or peak shear rate determine the magnitude of flow-mediated dilation in healthy males?

P
Population
10 healthy males for the duration manipulation experiment and 8 healthy males for the peak manipulation experiment
I
Intervention
Reactive hyperemia duration manipulation (10 s, 20 s, 30 s, 40 s, 50 s, or full reactive hyperemia) and peak shear rate magnitude manipulation (large, medium, and small)
C
Comparator
Different durations and peak shear rates within the same subjects
O
Outcome
Peak flow-mediated dilation (%FMD)surrogate

Shear stimulus area under the curve, rather than peak shear rate, is the critical determinant of peak flow-mediated dilation response.

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Cite This Study

Pyke et al. (2006) studied this question.

synapsesocial.com/papers/69f1a0d510fa38abb3d23701https://doi.org/10.1152/japplphysiol.01024.2006
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