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Method and apparatus for detecting acoustic oscillations in cardiac rhythm

  • US 20030208240A1
  • Filed: 05/03/2002
  • Published: 11/06/2003
  • Est. Priority Date: 05/03/2002
  • Status: Active Grant
First Claim
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1. An implantable cardiac rhythm management device, comprising:

  • an accelerometer for generating a phonocardiogram signal;

    a controller for processing the phonocardiogram signal to detect heart sounds within the phonocardiogram signal and to measure oscillations in the amplitudes of the heart sounds during successive heart beats; and

    , wherein the controller is programmed to detect acoustic alternans when the measured oscillations exceed a specified magnitude and to adjust the operating behavior of the device when acoustic alternans is detected.

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