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左心室收缩期的状态变量,是喷血压力,定义左心室喷血压力方程是在阻断升主动脉血液向远心端输出的情况下,心导管所测的先心室收缩期压力曲线的表达式。本文介绍建立该方程的实验研究,理论方程计算结果与实验数据的比较,两者比较显示出非常满意的一致性。曲线拟合相关系数为0.998。试验方法建立动物模型:实验家犬在静脉麻醉下,用肌松打断自主呼吸,呼吸用电动呼吸机控制,开胸后使动物肝素化,将一根动脉导管由左锁骨下动脉插入左心室,用多导记录仪同步记录心电图,左心室压力,走纸速度100mm/秒。
The left ventricular systolic state variable is the spurting pressure. The definition of the left ventricular ejection pressure equation is the expression of the ventricular systolic pressure curve measured by the cardiac catheter under the condition of blocking the output of the ascending aorta blood to the distal end. formula. This article describes the experimental study of the establishment of the equation, the calculation of the theoretical equation and the experimental data comparison, the two showed very satisfactory consistency. The curve fitting correlation coefficient is 0.998. Test method Establish animal model: The experimental dog under cannula anesthesia, using muscle relaxation to interrupt spontaneous breathing, breathing with electric ventilator control, open the chest and make the animal heparinized, insert an arterial catheter from the left subclavian artery into the left ventricle Simultaneous recording of ECG with multi-lead recorder, left ventricular pressure, and paper feed speed of 100 mm/sec.