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Using photo-plethysmography to monitor autonomic tone and performing pacing optimization based on monitored autonomic tone

  • US 7,177,686 B1
  • Filed: 01/23/2004
  • Issued: 02/13/2007
  • Est. Priority Date: 11/10/1999
  • Status: Expired due to Fees
First Claim
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1. A method for monitoring autonomic tone of a patient, comprising:

  • (a) producing a photo-plethysmography signal that is representative of arterial pulse pressure of the patient; and

    (b) monitoring the autonomic tone of the patient based on the photo-plethysmography signal by identifying changes in at least one of sympathetic tone and parasympathetic tone of the patient based on changes in pulse amplitude associated with the photo-plethysmography signal.

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