Method and apparatus for measuring the concentration of a gas in exhaled air

摘要

There is provided an apparatus for monitoring the respiration of a subject, the apparatus comprising a sensor for measuring the concentration of a specified gas in air exhaled by the subject and a processor configured to provide an output indicating the concentration of the specified gas in a selected portion of the exhaled air, the selected portion of the exhaled air corresponding to air from a specific part of the respiratory system of the subject.

主权项

1. An apparatus for monitoring the respiration of a subject, the apparatus comprising:
a gas concentration sensor configured to measure a concentration of a specified gas in exhaled air by the subject; and a physical computer processor in communication with the sensor configured by machine-readable instructions such that the apparatus for monitoring the respiration electronically determines the concentration of the specified gas in the exhaled air at least by measuring the concentration of the specified gas in air exhaled from bronchia of the subject as distinct from gas from alveoli of the subject, the machine-readable instructions causing the physical computer processor to: identify portions of the exhaled air that corresponds to air exhaled from an upper airway, the alveoli, and the bronchia of a respiratory tract of the subject; activate the sensor, in response to identifying a portion of the exhaled air from the bronchia, to measure the concentration of the specified gas in the exhaled air from the bronchia; and provide an output indicating the concentration of the specified gas in the exhaled air from the bronchia of the subject.