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Cardiac pacing using adjustable atrio-ventricular delays

  • US 6,351,673 B1
  • Filed: 09/14/2000
  • Issued: 02/26/2002
  • Est. Priority Date: 05/08/1998
  • Status: Expired due to Term
First Claim
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1. A method, comprising:

  • selecting a cardiac reference event which repeats every cardiac cycle;

    selecting a cardiac variable event which changes as a function of a cardiac performance parameter, the cardiac performance parameter related to optimal atrio-ventricular delay;

    measuring an intrinsic time interval between the cardiac reference event and the cardiac variable event in an unpaced condition;

    ascertaining an optimal atrio-ventricular delay for optimizing the cardiac performance parameter;

    collecting intrinsic time intervals and optimal atrio-ventricular delays for a number of patients;

    producing a mathematical relationship for the intrinsic time intervals and the optimal atrio-ventricular delays.

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