CAJ | 학술논문

根据肺循环血管系统的解剖结构,提出了模拟肺动脉输入阻抗的轻微非对称T型管模型.计算得到的肺动脉输入阻抗与实验数据比较表明,该模型能很好地模拟右心室的后负荷.还利用右心室的E(t)-R模型及肺动脉的轻微非对称T型管模型,应用脉冲响应法,对肺循环的动态耦合及心血管参数的影响进行了研究,发现了一个心动周期中,右心室对肺动脉压力和流量变化起主导作用.
근거폐순배혈관계통적해부결구,제출료모의폐동맥수입조항적경미비대칭T형관모형.계산득도적폐동맥수입조항여실험수거비교표명,해모형능흔호지모의우심실적후부하.환이용우심실적E(t)-R모형급폐동맥적경미비대칭T형관모형,응용맥충향응법,대폐순배적동태우합급심혈관삼수적영향진행료연구,발현료일개심동주기중,우심실대폐동맥압력화류량변화기주도작용.
Based on the anatomical structure of pulmonary arteries, a slightly asymmetric T-tube model with distributed parameters is proposed herein to simulate the pulmonary arteries. Comparison between our calculated input impedance to the pulmonary arteries with available experimental data proves that such a model provides an excellent simulation to the right ventricular afterload. With a E (t)-R model for the right ventricle and a slightly asymmetric T tube model for the pulmonary arteries, the dynamic coupling of the right ventricle and pulmonary circulation is quantitatively studied using the impulse response method. The influence of various cardiovascular parameters is discussed. It is found that the right ventricle plays a predominant role over the pulmonary arteries in determining the pulmonary blood pressure and flow variations during a cardiac cycle.