1979
DOI: 10.1161/01.res.45.2.267
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Pulmonary vascular impedance analysis of adaptation to chronically elevated blood flow in the awake dog.

Abstract: Pulsatile pulmonary hemodynamics were analyzed in a chronic awake canine high flow model. Standard mean flow and pulsatile flow hemodynamics were measured and alterations in the proximal pulmonary vascular physical properties were quantified by the characteristic impedance (Zo). Pulmonary vascular resistance (PVR), which assesses arteriolar-capillary recruitment of perfusing radius and measures a more distal pulmonary vascular response to changing flows, also was calculated. Twelve control dogs were studied an… Show more

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Cited by 31 publications
(14 citation statements)
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“…The dark lines show the mean impedance and the light lines one standard deviation above and below the mean impedance. The values for Z o and Z inf , as well as the phase information, we obtained during baseline were comparable to those reported by earlier investigators (Bergel and Milnor, 1965;Elkins and Milnor, 1971;Reubin et al, 1971;Elkins et al, 1974;Pouleur et al, 1978;Hopkins et al, 1979;Hammon et al, 1981). Figure 6 summarizes the results for all experimental conditions.…”
Section: Effects Of Vascular Interventionssupporting
confidence: 91%
“…The dark lines show the mean impedance and the light lines one standard deviation above and below the mean impedance. The values for Z o and Z inf , as well as the phase information, we obtained during baseline were comparable to those reported by earlier investigators (Bergel and Milnor, 1965;Elkins and Milnor, 1971;Reubin et al, 1971;Elkins et al, 1974;Pouleur et al, 1978;Hopkins et al, 1979;Hammon et al, 1981). Figure 6 summarizes the results for all experimental conditions.…”
Section: Effects Of Vascular Interventionssupporting
confidence: 91%
“…Previous studies of pulmonary artery input impedance have been primarily restricted to animal experiments (Caro and McDonald, 1961;Patel et al, 1963;Bergel and Milnor, 1965;Milnor et al, 1966;O'Rourke, 1968;Elkins and Milnor, 1971;Reuben et al, 1971;Pace, 1971;Elkins et al, 1974;Piene, 1976aPiene, , 1976bHopkins et al, 1979Hopkins et al, , 1980. Pouleur et al (1978) analyzed the effects of artificial lung inflation on anesthetized dogs, but the effects of normal respiratory mechanics on the input impedance of the pulmonary arterial system have not been studied.…”
Section: Input Impedance Of the Pulmonary Arterial System In Normal Manmentioning
confidence: 99%
“…The characteristics of the ventricles differ (Rushmer, 1964;Elzinga et al, 1980). Although a comparative study has not been done, the literature indicates that pulmonary and systemic input impedances are also different (Milnor et al, 1966;Noble et al, 1967;Reuben et al, 1971;Westerhof et al, 1973;Pouleur et al, 1978;Hopkins et al, 1979Hopkins et al, , 1980. Consequently, resemblance of pulmonary and aortic flow waves is small; the same is true for pulmonary and aortic pressure waves (Fig.…”
mentioning
confidence: 99%