Method and device for measuring the concentration of nitrogen monoxide in the respiratory air of a patient

摘要

A device for measuring the concentration of nitrogen monoxide in the respiratory air of a patient includes a nitrogen dioxide sensor and a converter. The sensor is arranged between an inlet opening and an outlet opening of the device. The converter, for oxidation of nitrogen monoxide to nitrogen dioxide, is arranged between the inlet opening and the sensor such that the device can be switched to at least two states. In a first state, a fluidic connection is present between the inlet opening and the sensor but does not lead through the converter. In a second state, a fluidic connection is present between the inlet opening and the sensor and leads through the converter.