Pulmonary function analysis

What is lung function analysis?

A lung function test is, as the name suggests, an examination used to check the function of the lungs and other airways. There are various test methods available for this purpose:

• spirometry (also called “Lufu” for “lung function” in practice)
• spiroergometry (examination of lung function under physical stress)
• Determination of diffusion capacity (an investigation of gas exchange)
• Peak flow measurement (determination of airflow in the respiratory tract)
• Body plethysmography/whole body plethysmography (based on volume measurement)
• blood gas analysis (determination of oxygen and carbon dioxide levels in the blood)
• drug testing procedures (targeted influence of respiratory function by active substances)

A lung function test can be performed both on an outpatient basis by a general practitioner or as part of a hospital stay. There are also simple devices for lung function testing at home using peak flow measurement.

‍Statutory health insurance usually covers the costs of the lung function test.

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When do you do a lung function analysis?

A lung function test is used both for diagnosis and for monitoring the progress or treatment success of various diseases.

For example, a doctor can use it to identify constricted airways (obstruction). This occurs primarily in the common diseases of asthma and COPD. The lung function evaluation of those affected shows a reduction in one-second capacity and the Tiffenau index. If the residual volume is increased, this may indicate pulmonary emphysema, often a long-term consequence of obstructive respiratory diseases.

What is the procedure for a lung function analysis?

In general, during a lung function test, the doctor determines various values that provide information about the functioning of the lungs. As a rule, the patient must breathe through the mouthpiece of a measuring device in accordance with the instructions of the medical team or medical professionals.

What do I have to consider after a lung function analysis?

Immediately after the lung function test, you should resume a normal breathing rhythm. Try to inhale and exhale calmly and evenly. If you have a slight cough or dry mouth, you should drink a little. Following the lung function test, your doctor will discuss the results and further steps with you.