Device for determining the levels of NO in exhaled air

Details Device for determining the levels of NO in exhaled air Device for determining the levels of NO in exhaled air

1998-03-20

2000-03-21

Larkin, Daniel S.

Measuring and testing

Gas analysis

Gas chromatography

600531, G01N 33497, A61B 508

Patent

active

060389133

ABSTRACT:
A device for determining the level of nitric oxide in an exhaled airstream belonging to a living organism selected to have its lung function evaluated, where an initial device is arranged to determine the current portion of nitric oxide and/or the distribution of nitric oxide over time during an exhalation phase. During the commencing period of the exhalation phase, the exhaled air is arranged to pass with no or with only a very small resistance or back-pressure to a free space, and during the remaining period, the exhaled air is arranged to pass through the initial device against the action of a suitable resistance or back-pressure. The level of nitric oxide is measured during this remaining period.

REFERENCES:
Publication entitled: "An introduction to human physiology", by J.H. Green, 3rd Edition, Oxford University Press, London, Chapter 5, pp. 63-74, "Respiration".

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