Oliva I, Ipser J, Kotíková K
Z Kardiol. 1975 May;64(5):461-71.
The most conspicious phenomenon in frequency spectra of pulse waves obtained in the lower extremity in aortal insufficiency is generally predominating decrease of amplitude in higher harmonic frequencies manifesting itself by progressively rising number of the harmonic. This suggests that the second harmonic is no longer the main energy bearer of the pulse wave as this is the case in healthy individuals. This is the case also, to a proportionate degree-measure, in third, fourth and fifth harmonic frequencies. Moreover, relative increase of the amplitude of each harmonic during the passage of the pulse wave across the artery distally is depressed. This may be considered as a weakening of the increase of impedance of arterial flow towards the periphery as compared with findings made in healthy individuals.
在主动脉瓣关闭不全患者下肢获取的脉搏波频谱中，最显著的现象通常是高次谐波频率下振幅普遍下降，且随着谐波数量逐渐增加而愈发明显。这表明二次谐波不再像健康个体那样是脉搏波的主要能量承载者。在三次、四次和五次谐波频率中，情况也成比例地如此。此外，脉搏波在动脉中向远端传播时，各谐波振幅的相对增加受到抑制。与健康个体的发现相比，这可被视为动脉血流向外周阻抗增加的减弱。
