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Implantable cardiac device providing intrinsic conduction search with premature atrial contraction protection and method

  • US 7,430,448 B1
  • Filed: 09/01/2005
  • Issued: 09/30/2008
  • Est. Priority Date: 09/01/2005
  • Status: Active Grant
First Claim
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1. In an implantable cardiac stimulation device, a method comprising:

  • providing pacing pulses on demand to a heart chamber upon time-out of an inhibit interval;

    providing a timer that times a base inhibit interval and an extended inhibit interval;

    causing the timer to time the extended inhibit interval;

    detecting a cardiac rate above a given rate;

    causing the timer to time the base inhibit interval upon detecting a cardiac rate above the given rate;

    detecting premature contractions of the heart; and

    causing the timer to time the extended inhibit interval upon detection of a premature contraction notwithstanding detection of a cardiac rate above the given rate.

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