The impact of upper-limb position on estimated central blood pressure waveforms

Journal of Human Hypertension
Lee StonerSimon Fryer

Abstract

Pulse wave analysis (PWA) utilizes arm blood pressure (BP) waveforms to estimate aortic waveforms. The accuracy of central BP waveform estimation may be influenced by assessment site local haemodynamics. This study investigated whether local haemodynamic changes, induced via arm tilting ±30° relative to heart level, affect estimated central systolic BP (cSBP) and arterial wave reflection (central augmentation index, cAIx; aortic backward pressure wave, Pb). In 20 healthy adults (26.7 years [SD 5.2], 10 F) brachial BP waveforms were simultaneously recorded on experimental and control arms. The experimental arm was randomly repositioned three times (heart level, -30° heart level, +30° heart level), while the control arm remained fixed at heart level. For the experimental arm, arm repositioning resulted in a large (partial eta-squared > 0.14) effect size (ES) change in SBP (ES = 0.75, P < 0.001), cSBP (ES = 0.81, P < 0.001), and cAIx (ES = 0.75, P = 0.002), but not Pb (ES = 0.06, P = 0.38). In the control arm, cAIx (ES = 0.22, P = 0.013) but not SBP or cSBP significantly changed. Change in experimental arm cSBP was partially explained by brachial systolic blood velocity (P = 0.026) and mean diameter (P = 0.012), while change in cA...Continue Reading

References

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Dec 19, 2008·Medicine and Science in Sports and Exercise·William G HopkinsJuri Hanin
Feb 22, 2012·Ultrasound in Medicine & Biology·Lee Stoner, Kevin K McCully
Mar 13, 2012·Journal of Clinical Ultrasound : JCU·Lee Stoner, Kevin K McCully
Jun 5, 2012·Journal of Atherosclerosis and Thrombosis·Lee Stoner, Manning J Sabatier
Jun 6, 2012·International Journal of Vascular Medicine·Lee StonerSimon Fryer
Oct 30, 2012·Journal of the American College of Cardiology·Julio A ChirinosPatrick Segers
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Nov 22, 2013·Journal of Atherosclerosis and Thrombosis·Lee StonerDavid S Rowlands
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Jun 19, 2016·American Journal of Hypertension·Xiaoqing PengJames E Sharman
Nov 20, 2016·Journal of Hypertension·Lee StonerBethany Barone Gibbs
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Software Mentioned

Visual Basic
cAIx
Statistical Package for Social Sciences
SphygmoCor
FMD Studio®
Hierarchical Linear Modelling

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