Consistency of Aortic Distensibility and Pulse Wave Velocity Estimates with Respect to the Bramwell-Hill Theoretical Model: a Cardiovascular Magnetic Resonance Study

Overview

Journal J Cardiovasc Magn Reson

Publisher Elsevier

Specialties Cardiology & Vascular Diseases
Radiology

Date 2011 Jan 29

PMID 21272312

Citations 30

Authors

Anas Dogui

Nadjia Kachenoura

Frederique Frouin

Muriel Lefort

Alain De Cesare

Elie Mousseaux

Alain Herment

Affiliations

Soon will be listed here.

Abstract

Background: Arterial stiffness is considered as an independent predictor of cardiovascular mortality, and is increasingly used in clinical practice. This study aimed at evaluating the consistency of the automated estimation of regional and local aortic stiffness indices from cardiovascular magnetic resonance (CMR) data.

Results: Forty-six healthy subjects underwent carotid-femoral pulse wave velocity measurements (CF_PWV) by applanation tonometry and CMR with steady-state free-precession and phase contrast acquisitions at the level of the aortic arch. These data were used for the automated evaluation of the aortic arch pulse wave velocity (Arch_PWV), and the ascending aorta distensibility (AA_Distc, AA_Distb), which were estimated from ascending aorta strain (AA_Strain) combined with either carotid or brachial pulse pressure. The local ascending aorta pulse wave velocity AA_PWVc and AA_PWVb were estimated respectively from these carotid and brachial derived distensibility indices according to the Bramwell-Hill theoretical model, and were compared with the Arch_PWV. In addition, a reproducibility analysis of AA_PWV measurement and its comparison with the standard CF_PWV was performed. Characterization according to the Bramwell-Hill equation resulted in good correlations between Arch_PWV and both local distensibility indices AA_Distc (r = 0.71, p < 0.001) and AA_Distb (r = 0.60, p < 0.001); and between Arch_PWV and both theoretical local indices AA_PWVc (r = 0.78, p < 0.001) and AA_PWVb (r = 0.78, p < 0.001). Furthermore, the Arch_PWV was well related to CF_PWV (r = 0.69, p < 0.001) and its estimation was highly reproducible (inter-operator variability: 7.1%).

Conclusions: The present work confirmed the consistency and robustness of the regional index Arch_PWV and the local indices AA_Distc and AA_Distb according to the theoretical model, as well as to the well established measurement of CF_PWV, demonstrating the relevance of the regional and local CMR indices.

Citing Articles

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Converting and Standardizing Various Measures of Arterial Stiffness to Pulse Wave Velocity.

Alhalimi T, Lim J, Gourley D, Tanaka H Pulse (Basel). 2022; 9(3-4):72-82.

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