Cybulski G
Department of Applied Physiology, Polish Academy of Sciences, Warsaw.
Acta Physiol Pol. 1988 Sep-Dec;39(5-6):494-503.
The described computer method of stroke volume (SV) estimation is based on impedance cardiography (ICG) signals. This method allows to calculate SV for 4096 successive cycles of the heart. The disturbing influence of respiration is reduced by base-line correction procedure. Stroke volume values determined automatically (AD) were compared with those obtained by conventional hand digitizing (HD) in 5 young male subjects in the supine and sitting positions, and in 5 subjects in the standing position. The correlation coefficient between SV values determined automatically SV (AD) and hand digitized SV (HD) calculated for all collected data was 0.9583 (n = 150, P less than 0.001). The error of the automatic SV determination was 6.7%.
所描述的每搏输出量（SV）估计的计算机方法基于阻抗心动图（ICG）信号。该方法能够计算心脏连续4096个周期的每搏输出量。通过基线校正程序可降低呼吸的干扰影响。在5名仰卧位和坐位的年轻男性受试者以及5名站立位的受试者中，将自动测定（AD）的每搏输出量值与通过传统手工数字化（HD）获得的值进行了比较。针对所有收集的数据计算得出，自动测定的每搏输出量（SV）（AD）与手工数字化的每搏输出量（HD）之间的相关系数为0.9583（n = 150，P＜0.001）。自动测定每搏输出量的误差为6.7%。
