Medical science | how to do lung function examination

Lung function examination is a painless, non-invasive, accurate and reliable examination to reflect the status of lung function.

What is a lung function test?

Lung function examination is a painless, non-invasive, accurate and reliable examination to reflect the status of lung function. A special pulmonary function instrument is used to measure the airflow velocity (lung flow) and air flow (lung volume) generated by the airway during breathing, so as to understand whether the respiratory function is normal. Compared with chest X-ray, CT and other examinations, pulmonary function examination focuses more on understanding the functional changes of the lungs.

Who needs a lung function test?

1. People who smoke for a long time or have a history of smoking.

2. Prolonged cough without a cold, several times a day.

3. Exercise Walking fast or walking up stairs makes it difficult to breathe.

4. Make wheezing sounds as you breathe.

5. When you get up in the morning, you feel phlegm in your throat and often cough up yellow phlegm.

6. History of occupational exposure to harmful gases.

7.Screening lung function is recommended for people over 40 years of age.

Especially for high-risk groups such as long-term smoking, respiratory symptoms, and dust operations, regular pulmonary function examination can detect lung diseases early, take timely treatment measures, and delay disease progression.

Lung function tests are critical steps

1. Tell height and weight for easy entry of information;

2. Adjust the examination posture, keep your back straight and your eyes flat in front of you;

3. Wrap the lips tightly around the mouth and clamp the nose clip to ensure that the gas enters and exits from the mouth;

4. Chest breathing, calm breathing twice, hard to breathe full, and then use explosive force to quickly blow for more than 6 seconds.