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Apnea/hypopnea detection system and method

  • US 20050020932A1
  • Filed: 07/21/2004
  • Published: 01/27/2005
  • Est. Priority Date: 07/25/2003
  • Status: Active Grant
First Claim
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1. An apnea/hypopnea detection system comprising:

  • a flow sensor adapted to detect patient respiratory flow; and

    processing means for (1) determining (a) a long term RMS energy based on the flow, (b) a long term threshold determined based on the long term RMS energy, and (c) a short term RMS energy based on the flow, and for (2) determining whether a patient is experiencing an apnea/hypopnea event by comparing the short term RMS energy with the long term threshold.

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