Schieffer H, Sternitzke N, Bette L
Z Kardiol. 1975 May;64(5):436-7.
A recording of the changes in the transthoracic resistance as a function of the cardiac cycle enables--in connection with the ejection time--a non-invasive determination of the cardiac output (impedance cardiography). On volunteers without heart diseases the cardiac output according to the Fick principle, the impedance-cardiographic and sphygmographic method at rest and under pharmacological influence is synchronously measured and statistically compared with the found cardiac output according to Fick. Especially under pharmacological influence the impedance-cardiographically determined values do not show a sufficient correlation. The range of error, is causes as well as the limited possibility of application of the method are being discussed.
记录经胸电阻抗随心动周期的变化，并结合射血时间，能够无创地测定心输出量（阻抗心动图）。在无心脏病的志愿者身上，同步测量静息状态及药物影响下根据菲克原理测得的心输出量、阻抗心动图法和脉搏描记法测得的心输出量，并将根据菲克原理测得的心输出量与上述测量结果进行统计学比较。特别是在药物影响下，通过阻抗心动图测定的值没有显示出足够的相关性。本文讨论了误差范围、误差产生原因以及该方法的应用局限性。
