Lungfunction tests, breathing test, bodypletysmography, spirometry, diffusion-capacityFrom these tests, in which the patient is instructed by a nurse to carry out breathing manoeuvres in a special device, the physician can draw conclusions regarding the condition of the airways (trachea and bronchi) and the alveoli.
Diseases like asthma, chronic obstructive bronchitis (COPD), emphysema, damage caused by smoking etc. can be diagnosed in this way. In doubtful cases, a bronchial provocation test can be necessary. Sometimes, the effect of inhaled drugs on the airways can be controlled immediately.