冠状动脉收缩期受压持续到舒张期的模拟实验分析

利用研制的心肌桥模拟装置,对冠状动脉受压迫状态建立了圆形收缩的实验模型,进行了冠状动脉受心肌桥压迫持续到舒张期情况下的血压和流量模拟实验.实验研究表明,冠状动脉面积收缩接近到原来的20%时,远段收缩压迅速与近段收缩压分离;当冠状动脉面积收缩到小于原来的20%时,近段收缩压迅速上升,远段压力从不稳定状态迅速过渡到收缩压呈反向分布状态.心率和近段血压范围不变时,流量随着收缩程度的增加而增加.

Simulative experiment and analysis of the pressure on the coronary artery from systole to diastole

A myocardial bridge simulator is made and an experimental model is built to simulate and study the blood pressure and the blood flow under the compression state.Through the experiment,it is found that,when the compression percentage closes to 20%,the compression pressure at the far end changes quickly and differs from that at the near end;and when the compression percentage is less than 20%,the compression pressure at the near end rises quickly and that at the far end transits from instability to reverse distribution state.The blood flow increases with the increment of the compression degree when heart rate and the blood pressure range at the near end are invariable.