A method and system is provided for detecting the depth of anesthesia wherein at least one anesthetic agent is absorbed in a patient's bloodstream during the administration of anesthesia, which includes sampling a patient's expired breath; analyzing the breath for concentration of at least one substance...http://www.google.fr/patents/US7104963?utm_source=gb-gplus-shareBrevet US7104963 - Method and apparatus for monitoring intravenous (IV) drug concentration using exhaled breath
Method and apparatus for monitoring intravenous (IV) drug concentration ...