Forward and backward waves in the arterial system: impedance or wave intensity analysis?

Med Biol Eng Comput. 2009 Feb;47(2):207-10. doi: 10.1007/s11517-009-0444-1. Epub 2009 Feb 6.


Both impedance analysis and wave intensity analysis are used to separate measured pressure and flow waveforms into their forward and backward components. The separation is sensitive to the characteristic impedance or wave speed determined from the data. In all other aspects, the results are identical.

MeSH terms

  • Blood Flow Velocity / physiology
  • Blood Pressure / physiology
  • Data Interpretation, Statistical
  • Humans
  • Models, Cardiovascular*
  • Pulsatile Flow / physiology*
  • Vascular Resistance / physiology