DEVICE FOR THE MEASUREMENT AND ANALYSIS OF THE MULTIPLE BREATH NITROGEN WASHOUT PROCESS

摘要

The present disclosure relates to a device for the measurement and analysis of the multiple breath washout process, where an ultrasound, flow and molar mass sensor determines the instantaneous flow and the instantaneous molar mass of the gas inspired and expired by the patient in the main flow.

主权项

1. A system for a multiple breath washout process, comprising:
a first molar mass sensor including an ultrasound transducer disposed in a main flow of gases inspired and expired by a user; a gas sensor disposed in a secondary flow of the gases; a second molar mass sensor disposed in the secondary flow; and a controller with computer readable instructions for:
receiving a first molar mass and a gas flow rate from the first molar mass sensor, a concentration of a first gas from the gas sensor, and a second molar mass from the second molar mass sensor; andestimating a concentration of a second tracer gas based on the received first molar mass, gas flow rate, concentration of the first gas, and the second molar mass.