Spirometry tests lung function and helps in the diagnosis and monitoring of asthma.
Spirometry is a simple and non-invasive test in which the patient is asked to blow into a device (through a disposable mouthpiece) with all his force several times.
The device measures the speed with which air is exhaled from the lungs of the patient. When there is resistance to the exhalation we speak about an obstructive pattern, which is typical of asthma.
Even after the diagnosis of asthma, monitoring over time with spirometry helps to understand the state of the disease and to optimize asthma treatment.