Dynamics of the Normal Aorta: “Inertiance” and “Compliance” of the Arterial System Which Transforms the Cardiac Ejection Pulse

Dynamics of the Normal Aorta: “Inertiance” and “Compliance” of the Arterial System Which Transforms the Cardiac Ejection Pulse

The contour of the flow pulse along the normal unopened aorta of human subjects and dogs was established by recording with the surgical probe type, square-wave magnetic flowmeter. The contour at a given vessel segment was found to be the result of the transforming action of the arterial system on th...

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Veröffentlicht in:Circulation research 1958-07, Vol.6 (4), p.491-500
Hauptverfasser: Spencer, Merrill P, Johnston, Frank R, Denison, Adam B
Format: Artikel
Sprache:eng
Schlagworte:
Aorta - physiology
Compliance
Heart
Heart Rate
Humans
Old Medline
Pulse
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creator Spencer, Merrill P
Johnston, Frank R
Denison, Adam B
description The contour of the flow pulse along the normal unopened aorta of human subjects and dogs was established by recording with the surgical probe type, square-wave magnetic flowmeter. The contour at a given vessel segment was found to be the result of the transforming action of the arterial system on the ventricular ejection pulse. The characteristics of the aorta and its branches were found to be analagous to a low-pass electric tuned circuit, which resonates at 3 to 6 c.p.s. The resonant frequency, apparent from midsystole throughout diastole, was independent of heart rate, damped to extinction during diastole and renewed with each systole. New terms for elastic hydraulics are proposed and defined.
doi_str_mv 10.1161/01.RES.6.4.491
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subjects Aorta - physiology
Compliance
Heart
Heart Rate
Humans
Old Medline
Pulse
title Dynamics of the Normal Aorta: “Inertiance” and “Compliance” of the Arterial System Which Transforms the Cardiac Ejection Pulse
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