MEASUREMENT METHODS AND SYSTEMS

摘要

In a method for measuring a dose of a drug inhaled by an animal, the momentary concentration of the drug in an aerosol supplied to the animal is determined as well as the momentary inhalation flow rate of the animal. An inhaled partial dose is calculated from each determined inhalation flow rate value and a corresponding concentration value. The calculated inhaled partial doses are added up to obtain the total dose inhaled by the animal. When a predetermined dose is to be administered to the animal, the inhaled partial doses are successively cumulated and compared with the predetermined dose. The aerosol generation is interrupted as soon as the predetermined dose is achieved. Systems for carrying the methods into effect are disclosed.