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Method and apparatus for continuous pulse contour cardiac output

  • US 7,704,209 B2
  • Filed: 02/11/2009
  • Issued: 04/27/2010
  • Est. Priority Date: 01/27/2005
  • Status: Expired
First Claim
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1. A system, comprising:

  • means for sensing a cardiac electrogram (EGM) signal of the heart;

    means for sensing a right ventricular pressure (RVP) signal;

    means for computing an estimated stroke volume using the sensed EGM signal and the sensed RVP signal;

    wherein the means for computing an estimated stroke volume comprises means for computing a RVP pulse contour integral by;

    identifying an integration start time corresponding to an estimated time of pulmonic valve opening;

    identifying an integration end time corresponding to an estimated time of pulmonic valve closure; and

    computing a plurality of correction areas used to adjust the area under the right ventricular pressure signal between the integration start time and the integration end time; and

    means for one of displaying and storing in a memory structure at least one of;

    the RVP pulse contour, the estimated stroke volume, the right ventricular pressure signal, the area.

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