[Evaluation of the pulse-wave form by means of the harmonic Fourier-analysis in aortic valve insufficiency].
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.
D000328:Adult; D001022:Aortic Valve Insufficiency / Q000503:physiopathology*; D001794:Blood Pressure; D002302:Cardiac Output; D002306:Cardiac Volume; D005260:Female; D005583:Fourier Analysis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011674:Pulse
Bewertung der Form der Pulswelle mit Hilfe der harmonischen Fourier-Analyse bei Aorteninsuffizienz