Minimum recovery time between reactive hyperemia stimulus in the repeated measurement of brachial flow-mediated dilatation.
Barton, M., Turner, A. . T., Newens, K. J., Williams, C. M. and Thompson, A. K. (2011) Minimum recovery time between reactive hyperemia stimulus in the repeated measurement of brachial flow-mediated dilatation. Ultrasound in Medicine and Biology, 37 (6). pp. 879-883. ISSN 0301-5629
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Official URL: http://www.umbjournal.org/article/S0301-5629(11)00...
The ability to undertake repeat measurements of flow-mediated dilatation (FMD) within a short time of a previous measurement would be useful to improve accuracy or to repeat a failed initial procedure. Although standard methods report that a minimum of 10 min is required between measurements, there is no published data to support this. Thirty healthy volunteers had five FMD measurements performed within a 2-h period, separated by various time intervals (5, 15 and 30 min). In 19 volunteers, FMD was also performed as soon as the vessel had returned to its baseline diameter. There was no significant difference between any of the FMD measurements or parameters across the visits indicating that repeat measurements may be taken after a minimum of 5 min or as soon as the vessel has returned to its baseline diameter, which in some subjects may be less than 5 min.
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