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Selective resynchronization therapy optimization based on user preference

  • US 8,041,426 B2
  • Filed: 09/23/2009
  • Issued: 10/18/2011
  • Est. Priority Date: 04/19/2005
  • Status: Expired due to Fees
First Claim
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1. A system comprising:

  • a sensing circuit configured to;

    (1) detect at least one of a sensed or paced atrial event; and

    (2) detect a sensed ventricular event; and

    a controller or programmer circuit, configured to be communicatively coupled to the sensing circuit, the controller or programmer circuit configured to;

    (1) determine a measured atrioventricular delay (AVD) concluded by the sensed ventricular event;

    (2) determine a measured interatrial delay (IAD) concluded by the sensed atrial event;

    (3) determine a first atrioventricular delay value, AVD1, selected to approximately maximize contractility of a ventricle, using the measured AVD concluded by the sensed ventricular event; and

    (4) determine a second atrioventricular delay value, AVD2, selected to approximately maximize stroke volume of the ventricle, using the measured IAD concluded by the sensed atrial event, wherein the controller or programmer circuit is configured to use a blended atrioventricular delay (AVDblended) that is determined using a user-modifiable function of both AVD1 and AVD2, wherein the AVDblended is determined as an individually-scaled sum of AVD1 and AVD2.

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