与氧输送相关的分形流异质性的微血管单位大小。

The microvascular unit size for fractal flow heterogeneity relevant for oxygen transport.

作者信息

van Beek J H, Barends J P, Westerhof N

机构信息

Laboratory for Physiology, Free University, Amsterdam, The Netherlands.

出版信息

Adv Exp Med Biol. 1994;345:901-8. doi: 10.1007/978-1-4615-2468-7_118.

DOI:10.1007/978-1-4615-2468-7_118

PMID:8079804

Abstract

In this study we used a computer model for oxygen transport in heterogeneously perfused tissue to define the microvascular unit size of relevance to oxygen transport. Flow within this unit is presumably heterogeneous, but this internal heterogeneity is by definition of negligible importance for the oxygen tension distribution. In saline-perfused heart the linear dimension of the thus defined unit is 500 microns, in blood-perfused heart it is 100 microns.

摘要

在本研究中，我们使用了一个用于模拟异质性灌注组织中氧气传输的计算机模型，以确定与氧气传输相关的微血管单元大小。该单元内的血流大概是不均匀的，但根据定义，这种内部不均匀性对氧分压分布的影响可忽略不计。在生理盐水灌注的心脏中，如此定义的单元的线性尺寸为500微米，在血液灌注的心脏中为100微米。