Abstract
In order to derive a better understanding of the effect of varying degrees of stenosis on arterial pulsatile waveforms, an in vitro model was constructed and in vivo studies were done in dogs to observe and record the changes in the pulsatile and steady arterial blood flow components. Blood flow measurements were made using the electromagnetic blood flowmeter proximal and distal to the stenosis. The data show that as the degree of stenosis increases, the decreases in the pulsatile components of flow and distal pressure occur earlier and to a much greater degree than changes in mean flow.
Résumé
Pour mieux comprendre les effets de sténoses d'importance variable sur la forme du pouls, nous avons construit un modèle in vitro et l'avons complété par des observations in vivo chez le chien. Nous avons observé et enregistré les modifications des composantes moyenne et pulsatile du flux sanguin. Les mesures ont été faites avec un débitmètre électromagnétique en amont et en aval de la sténose. Lorsque les diamètres artériels diminuent, les composantes pulsatiles du flux et de la pression en aval diminuent plus vite que le débit sanguin moyen.
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Lee, B.Y., Assadi, C., Madden, J.L. et al. Hemodynamics of arterial stenosis. World J. Surg. 2, 621–627 (1978). https://doi.org/10.1007/BF01556059
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DOI: https://doi.org/10.1007/BF01556059