Saito Y, Goto T, Terasaki H, Hayashida Y, Morioka T
Arch Int Physiol Biochim. 1983 Nov;91(4):339-44. doi: 10.3109/13813458309067979.
To study the effects of pulmonary blood flow on the impedance cardiogram, the pattern of pulmonary blood flow was alternated from pulsatile to non pulsatile, or the reverse, using our extracorporeal bypass-method on anaesthetized dogs. The thoracic impedance cardiogram was recorded from band electrodes placed around the neck and upper abdomen. During nonpulsatile pulmonary blood flow, the height of the diastolic phase of the delta Z wave was lower than that during pulsatile pulmonary blood flow. The area under the impedance curve decreased during nonpulsatile pulmonary blood flow. This appeared to be more obvious as the pulmonary arterial flow was reduced. The results suggest that the pulmonary blood flow might have substantial effects on the impedance cardiogram.
为了研究肺血流对阻抗心动图的影响，在麻醉犬身上采用体外循环法，将肺血流模式由搏动性变为非搏动性，或由非搏动性变为搏动性。通过置于颈部和上腹部的带状电极记录胸部阻抗心动图。在非搏动性肺血流期间，ΔZ波舒张期的高度低于搏动性肺血流期间。在非搏动性肺血流期间，阻抗曲线下的面积减小。随着肺动脉血流减少，这种情况似乎更明显。结果表明，肺血流可能对阻抗心动图有实质性影响。
