From excessive high-flow, high-gradient to paradoxical low-flow, low-gradient aortic valve stenosis : hemodialysis arteriovenous fistula model

Authors: Ennezat, Pierre Vladimir; Maréchaux, Sylvestre; Pibarot, Philippe
Abstract: The coexistence of aortic valve stenosis (AS) with hemodialysis arteriovenous (AV) fistula complicates the assessment of the severity of valvular disease. We describe the physiological changes in stenotic indices which occur following manual compression of the AV fistula. The manual compression of the AV fistula is capable of inducing significant alterations in transvalvular flow rates and valvulo-arterial impedance that translates into important changes in aortic valve hemodynamics and grading of stenosis severity.
Document Type: Article de recherche
Issue Date: 1 June 2010
Open Access Date: Restricted access
Document version: VoR
This document was published in: Cardiology, Vol. 116 (1), 70–72 (2010)
Alternative version: 10.1159/000314938
Collection:Articles publiés dans des revues avec comité de lecture

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