Nechwatal W, Eversmann A, Bier P, König E
Klin Wochenschr. 1976 Jul 15;54(14):677-82. doi: 10.1007/BF01469148.
Cardiac output was measured in 55 patients by the direct Fick method and an automatized thermodilution method. The results showed a good correlation (correlation factor r = 0.87, regression equation y = 0.91 x + 0.59). For the thermodilution method ice-cold normal saline solution as indicator substance was injected into the right atrium. The temperature-time-curve was measured by a thermistor located in the pulmonary artery. The area of indicator dilution was determined by electronic integration, the calculated cardiac output appeared as 1/min in digital display.
采用直接Fick法和自动热稀释法对55例患者的心输出量进行了测量。结果显示出良好的相关性（相关系数r = 0.87，回归方程y = 0.91x + 0.59）。对于热稀释法，将冰冷的生理盐水溶液作为指示物质注入右心房。通过置于肺动脉中的热敏电阻测量温度-时间曲线。通过电子积分确定指示物稀释面积，计算出的心输出量以每分钟升数在数字显示屏上显示。
