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Systems and methods for respiratory event detection

  • US 7,267,652 B2
  • Filed: 04/09/2004
  • Issued: 09/11/2007
  • Est. Priority Date: 04/10/2003
  • Status: Active Grant
First Claim
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1. A method for recognizing respiratory events in a monitored subject comprising:

  • deriving a signal (Vt) indicative of lung volume from a plurality of respiratory signals received from the monitored subject,deriving from the Vt signal one or more temporal sequences of respiratory volume parameters, andrecognizing sigh events in dependence on at least one of the derived temporal sequences of respiratory volume parameters, wherein a breath is recognized as a sigh if that breath is not an artifact according to the true breath rule, and has volume parameters greater than a threshold sigh volume, wherein the threshold sigh volume varies in dependence on running median baseline lung volumes.

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