Uncertainty analysis of measurement error in calculating vascular input impedance: how many harmonics can be resolved?

• Published in: Proceedings of the Second Joint 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society] [Engineering in Medicine and Biology Vol. 2; pp. 1319 - 1320 vol.2
• Main Authors: Koenig, S.C., Schroeder, M.J., Wheeler, B., Jorgenson, J., Ewert, D.L.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 2002
• Subjects: Error analysis; Fast Fourier transforms; Fluid flow measurement; Frequency domain analysis; Frequency measurement; Harmonic analysis; Impedance measurement; Measurement errors; Phase measurement; Pressure measurement

Vascular input impedance represents the hydraulic load seen by the ejecting ventricle and is represented by magnitude and phase components in the frequency domain derived from Fast Fourier Transform (FFT) of instantaneous vascular pressure and flow measurements. The resulting spectra consists of a m...