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Method and apparatus for detecting atrial filling pressure

  • US 8,951,205 B2
  • Filed: 01/24/2013
  • Issued: 02/10/2015
  • Est. Priority Date: 12/30/2002
  • Status: Expired due to Term
First Claim
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1. A system comprising:

  • an implantable medical device, including;

    a heart sound sensor, configured to sense a heart sound signal of a heart;

    a heart sound detector, coupled to the heart sound sensor, the heart sound detector configured to detect at least one parameter using the heart sound signal, the at least one parameter including an amplitude and a duration of a heart sound; and

    a processor, coupled to the heart sound detector, the processor configured to adjust the duration using the amplitude, and to provide the adjusted duration as a diagnostic indicator;

    wherein the processor is configured to use the adjusted duration to distinguish between at least two atrial filling pressure magnitudes.

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