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Pacemaker with vasovagal syncope detection

  • US 5,441,525 A
  • Filed: 05/20/1994
  • Issued: 08/15/1995
  • Est. Priority Date: 05/20/1994
  • Status: Expired due to Term
First Claim
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1. A cardiac pacemaker for detecting the onset of a cardioinhibitory episode comprising:

  • heart rate drop determination means for determining the size of a drop in heart rate;

    minimum rate drop storage means for storing a programmable minimum rate drop;

    minimum rate storage means for storing a programmable maximum drop ending rate;

    comparator means coupled to said heart rate drop determination means, said minimum rate drop storage means, and said minimum rate storage means for comparing the size of said drop in rate to said minimum rate drop, and for comparing an ending rate to said maximum drop ending rate, said ending rate being defined as the heart rate at the time said rate drop is determined; and

    cardioinhibitory indication means coupled to said comparator means for indicating the occurrence of a cardioinhibitory episode when said rate drop exceeds said minimum rate drop and said ending rate is below said maximum drop ending rate.

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