本文利用一种心室分析模型,对心室后负荷,用更符合循环生理实际的非对称T型管模型替代三元件的Westerhof模型,在此基础上研究心室压力-容积关系(特别是收缩末期的压力-容积关系)随后负荷的变化情况,发现收缩末期的心室压力-容积关系基本上不随后负荷的改变而改变,这与Sunagawa等人用三元件模型作后负荷的实验结果相一致,从而在更一般的情况下从理论上证明了心室收缩末期的压力-容积关系基本上与后负荷无关的结论。 In this paper, a ventricular analysis model is used to replace the Westerhof model of three-element model with asymmetric T-tube model that is more suitable for circulatory physiology for ventricular post-ventricular load. Based on this, the ventricular pressure-volume relationship Volume relationship) followed by load changes and found that the end-systolic ventricular pressure-volume relationship did not change substantially with subsequent changes in load, which is consistent with Sunagawa et al.’s three-component model for post-load experimental results in order to be more Under normal circumstances, it is theoretically proved that the end-systolic pressure-volume relationship is basically unrelated to the post-load conclusion.