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Method and apparatus for adjustment of sequential biventricular pacing parameters

  • US 7,310,554 B2
  • Filed: 12/19/2003
  • Issued: 12/18/2007
  • Est. Priority Date: 01/28/2003
  • Status: Active Grant
First Claim
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1. A system for setting one of more pacing parameters used by an implantable cardiac rhythm management device in delivering cardiac resynchronization therapy, comprising:

  • an implantable cardiac rhythm management device which includes;

    an atrial sensing channel for generating electrogram signals corresponding to electrical activity in an atrium;

    right and left ventricular sensing channels for generating electrogram signals corresponding to electrical activity in the right and left ventricles, respectively;

    right and left ventricular pacing channels for delivering pacing pulses to the right and left ventricles, respectively;

    a controller for controlling the output of pacing pulses and interpreting electrogram signals, wherein the controller is programmed to deliver a left ventricular pace and a right ventricular pace separated by a programmed biventricular offset interval in accordance with a demand pacing mode; and

    , a telemetry interface;

    an external programmer with associated display and input means in communication with the implantable device via the telemetry interface;

    wherein the system is programmed to generate signals from which the delay between right ventricular and left ventricular activation during an intrinsic beat, referred to as the Δ

    RL interval, may be measured; and

    ,wherein the system is programmed to compute an optimum biventricular offset interval in accordance with a formula which expresses the optimum biventricular offset interval as a function of the measured Δ

    RL interval.

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