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决定冠状循环血流阻力的三种基本因素为:(1)心脏搏动的机械效应,其所产生的对冠状血流的机械阻力与冠状血流的任何内在控制无关;(2)冠状血管壁中平滑肌细胞的收缩力,这是由心脏神经和心脏局部代谢所控制;(3)冠状血管的解剖和侧枝循环,其个体和种族之间的差异推测是由遗传所决定,但心肌氧需量的变化和心肌缺血可使之更为明显。本文复习这方面的最新进展,阐述决定冠状血管阻力的三个因素及其相互影响.冠状血管外阻力
The three basic factors that determine coronary flow resistance are: (1) mechanical effects of cardiac beating, which produce mechanical resistance to coronary blood flow independent of any intrinsic control of coronary blood flow; (2) in the coronary vessel wall Smooth muscle cells contractile force, which is controlled by the local metabolism of the heart nerve and heart; (3) the anatomy and collateral circulation of coronary vessels, the differences between individuals and races are presumed to be genetically determined, but myocardial oxygen demand Changes and myocardial ischemia can make it more obvious. This review of the latest progress in this area, set out to determine the three factors of coronary vascular resistance and their interaction .Coronary extravascular resistance