Comparison between cuff-based and radial tonometry exercise-induced central blood pressure.

Autor: Morales-Acuna, Francisco, Ratcliffe, Brycen, Harrison, Caleb, Crowe, Sierra, Bockover, Evan, Pawlak, Robert, Gurovich, Alvaro N.
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Zdroj: European Journal of Applied Physiology; Apr2019, Vol. 119 Issue 4, p901-911, 11p, 1 Diagram, 3 Charts, 3 Graphs
Abstrakt: Purpose: Non-invasive central blood pressure assessed during exercise may provide better cardiovascular prognostic than measurements taken at rest. Radial tonometry is the only technique validated to perform this type of assessment; however, it relies on the experience of the tester. Cuff-based devices have been developed to avoid operator dependency, although these systems have yet to be validated during exercise. The purpose of this study was to compare exercise-induced central blood pressure estimations between a cuff-based device and radial tonometry.Methods: Twenty young healthy subjects were recruited to perform a three-workload steady-state exercise test at blood lactate levels of < 2, 2-4, and > 4 mmol/L, respectively. Central systolic and diastolic blood pressure (cSBP and cDBP, respectively), central pulse pressure (cPP), and augmentation index (AIx) were assessed at rest and during each workload with a cuff-based device and radial tonometry. Statistical analysis included Bland-Altman analysis for agreement between techniques. Agreement was considered when 95% of the data set for each central blood pressure parameter was within 1.96 standard deviations from the mean difference. Significance was considered at α = 0.05.Results: Central blood pressure measurements with the cuff device were obtained only at rest and during low-intensity exercise. During low-intensity exercise, all measurements showed agreement between both devices (cSBP 95% CI [- 6.0 to 10.7], cDBP 95% CI [- 4.5 to 6.3], cPP 95% CI [- 4.7 to 8.3], and AIx (95% CI [- 20.1 to 22.2]).Conclusion: A cuff-based device can estimate central blood pressure at low-intensity exercise, without operator dependency, and showing agreement to radial tonometry. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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