Mello A
Rev Bras Pesqui Med Biol. 1976 Jan-Feb;9(1):23-8.
In the present paper a formula appropiate to stroke volume estimation in the experimental animal is presented. Based in the indicator concentration difference during the two diastoles which follows the indicator injection on the ventricle chamber, the electric conductivity through impedance recording indicates these concentration. Appropiate procedures and a calibrating scale are used in order to obtain these two concentrations. From the stroke volume which appears as changes in impedance measured between a pair of electrodes located at the apex and base of the ventricle and the data obtained through the formula, the cardiac output and ventricular volume can be calculated.
在本论文中，提出了一个适用于实验动物心搏量估计的公式。基于在心室腔注入指示剂后两个舒张期内的指示剂浓度差，通过阻抗记录的电导率可指示这些浓度。采用适当的程序和校准标度来获取这两种浓度。根据位于心室顶端和基部的一对电极之间测得的阻抗变化所呈现的心搏量以及通过该公式获得的数据，可以计算心输出量和心室容积。
