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Method and apparatus for monitoring intravenous (IV) drug concentration using exhaled breath

  • US 20030139681A1
  • Filed: 01/22/2002
  • Published: 07/24/2003
  • Est. Priority Date: 01/22/2002
  • Status: Active Grant
First Claim
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1. A method for determining the depth of anesthesia wherein at least one anesthetic agent is administered into a patient'"'"'s bloodstream during the delivery of anesthesia, comprising:

  • sampling a patient'"'"'s expired breath;

    analyzing the breath for concentration of at least one substance indicative of the anesthetic agent using sensor technology; and

    determining depth of anesthesia based on the concentration.

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