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Post-extrasystolic potentiation stimulation with physiologic sensor feedback

  • US 5,213,098 A
  • Filed: 07/26/1991
  • Issued: 05/25/1993
  • Est. Priority Date: 07/26/1991
  • Status: Expired due to Term
First Claim
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1. A cardiac pacemaker having escape interval timer means for generating a pace event signal at the time-out of an escape interval, natural heart depolarization sensing means for providing a sense event signal upon sensing a heart depolarization, means for resetting said escape interval timer means in response to pace and sense event signals, pulse generator means responsive to a pace event signal for generating a pacing pulse, and means for applying the packing pulse to a heart, further comprising means for selectively providing post-extrasystolic potentiation effects without undue cardiac stress comprising:

  • means for causing said pulse generator means to provide a paired packing pulse a paired pulse interval after the occurrence of a pace event signal in order to induce a post-extrasystolic potentiation effect;

    means for detecting a physiologic response resulting from said post-extrasystolic potentiation effect; and

    means responsive to said detecting means for adjusting said selectively providing means to vary a parameter of said paired packing pulses accordingly.

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