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Method and apparatus to optimize pacing based on intensity of acoustic signal

  • US 5,554,177 A
  • Filed: 03/27/1995
  • Issued: 09/10/1996
  • Est. Priority Date: 03/27/1995
  • Status: Expired due to Term
First Claim
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1. A method for adjusting a cardiac pacemaker by automatically responding to abnormal sounds caused by a suboptimal heart condition comprising;

  • isolating a particular heart sound believed to be indicative of the suboptimal heart condition at least in part by relating it temporally to the time of first (S1 ) and second (S2) heart sounds from the signal produced by an acoustic sensor adaptively situated in association with the body of a patient to receive such sounds and from them for producing high signal levels of such sounds,determining a measure of at least one characteristic of the particular heart sound,adjusting the time period before the next delivered pacing pulse until the lowest desirable measure of said at least one characteristic of said particular heart sound is detected.

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