A system includes: a first sensor configured to measure one of a ventilatory volume, a concentration of gas, a respiratory rate and a respiratory pressure； a second sensor configured to measure a pressure associated with a mask adapted to be attached to a human patient or a mannequin； a processor configured to analyze a measurement value of the first sensor and a measurement value of the second sensor； and an output unit connected to the processor, and configured to output, based on a result of the analysis of the processor, at least one of: a condition of the mask adapted to be attached to the human patient or the mannequin； and a condition of the human patient or the mannequin.
