Transmural pressure-area relation for veins and arteries

Proceedings of the 1988 Fourteenth Annual Northeast Bioengineering Conference Pub Date : 1988-03-10 DOI:10.1109/NEBC.1988.19403

G. Drzewiecki, I. Moubarak

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引用次数: 12

Abstract

Experiments on isolated dog carotid arteries and jugular veins are performed to examine the effects of altered transmural pressure on the cross-sectional area of the blood vessel lumen. The data serves to provide a foundation describing the collapse of both arteries and veins for both positive and negative transmural pressures. In all normal and paralyzed vessels studied, change from a circular shape to collapsed occurred in the positive transmural pressure range, while in an elastic tube of similar geometry it occurred in the negative range. Over normal physiological pressure range, the veins showed a maximum normalized compliance (dA/dP)A/sub 0/ nearly ten times greater than that in the arteries. At higher transmural pressures the veins were considerably stiffer than the arteries. The veins assumed a circular shape at lower positive transmural pressures than did the arteries. The lumen normalized cross-sectional area from a paralyzed vessel showed a decrease for a given transmural pressure when compared with that of a normal vessel at the same transmural pressure.<>

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静脉和动脉的跨壁压力-面积关系

在离体狗颈动脉和颈静脉上进行了实验，以检查改变的跨壁压力对血管管腔横截面积的影响。这些数据为描述动脉和静脉在正、负跨壁压力下的塌陷提供了基础。在研究的所有正常和瘫痪血管中，从圆形到塌陷的变化发生在正跨壁压力范围内，而在类似几何形状的弹性管中，这种变化发生在负跨壁压力范围内。在正常生理压力范围内，静脉的最大正常化顺应性(dA/dP) a /sub /是动脉的近10倍。在较高的跨壁压力下，静脉比动脉硬得多。在较低的正跨壁压力下，静脉呈圆形。与正常血管在相同的跨壁压力下相比，麻痹血管的管腔标准化横截面积在给定的跨壁压力下减小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the 1988 Fourteenth Annual Northeast Bioengineering Conference

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