User's Manual

6.4.1.2 Description of operating real-time measurement homepage

Figure 10 FVC measurement real-time interface

1) Real-time dynamic display of flow rate - volume curve during breathing .

2) Real-time dynamic display of tidal volume and respiratory rate during steady

breathing, guiding the user to measure the steady control progress value within the

green range.

3) Real-time dynamic lung breathing status, which intuitively reflects the arrow down

when the user inhales and the arrow goes up when the user exhales, guiding the

patient to breathe abruptly.

4) Real-time dynamic display of the stability of vital capacity, when the tidal stable

breathing state is reached, the baseline turns to red, and the user can proceed to the

next step of inhaling deeply and then exhaling immediately with explosive force.

6.4.1.3 Operation steps

1) Practice forced breathing according to the instructions of the technician or doctor, and

master the essentials of FVC. Avoid fatigue subjects achieved full intended results.

2) Connect the mouthpiece to the mouth, wrap the mouthpiece tightly with your lips, and

clamp the nose clip to ensure that the mouth and nose do not leak. If some subjects