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Rate adaptive biventricular and cardiac resynchronization therapy

  • US 7,702,390 B1
  • Filed: 12/13/2006
  • Issued: 04/20/2010
  • Est. Priority Date: 12/13/2006
  • Status: Active Grant
First Claim
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1. A method comprising:

  • measuring a P wave width (Δ

    P base) during a patient base state;

    determining a patient base state PV delay (PV base) based on the P wave width (Δ

    P base) and a value of a parameter δ

    wherein the value of the parameter δ

    depends on the P wave width (Δ

    P base);

    measuring an atrio-ventricular delay (DD base) during the patient base state;

    measuring an atrio-ventricular delay (DD active) during a patient active state;

    determining a patient active state PV delay (PV active) based at least in part on the atrio-ventricular delay (DD base) and the atrio-ventricular delay (DD active) wherein the atrio-ventricular delays extend from the end of a respective P wave to the beginning of a respective ventricular QRS complex or a point within a respective ventricular QRS complex; and

    applying a pacing therapy that uses PV base or PV active.

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