Patent ID: 6017313
Filing Date: 2000-01-25
Classification: A61B

Abstract:
Apparatus for analyzing a digitized arterial blood pressure waveform comprising a computer programmed to carry out the steps of:a) fitting a mathematical model of a curve to a diastolic portion of the waveform to determine a first set of curve fitting parameters;b) fitting the mathematical model to the diastolic portion of the waveform to determine a second set of curve fitting parameters;c) determining a first model parameter of an electrical analog model of a vasculature for each of the first and second sets of curve fitting parameters;d) determining an estimate of the error associated with each of the first model parameters;e) selecting as superior the first model parameter with the least error associated with it;f) determining a second model parameter of an electrical analog model of the vasculature for each of the first and second sets of curve fitting parameters;g) determining an estimate of the error associated with each of the second model parameters;h) selecting as superior the second model parameter with the least error associated with it; andi) reporting to a user of the apparatus the first and second model parameters selected as superior, wherein the first and second model parameters reported to the user are not necessarily obtained from the same set of curve fitting parameters.