“Breathe in hard…exhale hard…”
“Doctor, I have tried my best, but my lung capacity is not enough.”
Vital capacity is an indicator of lung function testing and does not represent lung function…
So what exactly does the pulmonary function test check?
Lung function (pixabay)
Pulmonary function test is an important examination method for diagnosing chronic airway diseases. It has the advantages of non-invasive, high sensitivity, convenient detection and easy acceptance. Through the detection of lung function, it is possible to detect early whether the respiratory function is damaged, as well as the extent and type of damage.
1. If you have chronic cough, dyspnea, chest tightness, shortness of breath, wheezing, etc., the cause can be further clarified through pulmonary function testing.
2. People who smoke and cough for a long time or smoke heavily for a long time should check whether the small airway function has changed and whether they have chronic obstructive pulmonary disease.
3. Seasonal coughing and wheezing attacks, confirm whether you have asthma through examination.
4. Patients with chronic obstructive pulmonary disease, chronic bronchitis, emphysema, etc. should undergo regular review to monitor the progression of the disease.
5. If the chest X-ray is abnormal, the lung function test can be used to determine whether there is damage to the lung function and the extent of the damage.
6. For patients with repeated respiratory tract infections, observe whether there is damage to lung function.
7. After clinical treatment of respiratory diseases, evaluate the efficacy and disease progression.
8. Risk assessment and prediction of postoperative recovery before anesthesia and surgery.
Chronic cough (photoAC)
Pulmonary function tests mainly include measuring several respiratory function indicators such as pulmonary ventilation function, lung volume, and pulmonary diffusing function.
1. Pulmonary ventilation function
Pulmonary ventilation function is a dynamic measure of the movement of air into and waste gas out of our alveoli. During the test, the patient is required to blow into the test device in different ways (normal, slow, fast, hard) to measure the amount and frequency of gas entering and exiting the lungs when we breathe.
2. Lung volume
Lung volume refers to the amount of gas contained in the lungs. It helps evaluate lung function by measuring the volume changes caused by breathing movements of different amplitudes. In layman’s terms, it measures the maximum amount of air that can be inhaled by the lungs and the amount of air remaining in the lungs after trying to fully exhale.
3. Pulmonary diffusing function
Pulmonary diffusion is an important indicator in detecting ventilation function. It mainly measures the extent to which gas (such as oxygen) can diffuse from the lungs to the blood.
Angina pectoris (photoAC)
1. Those who have suffered from myocardial infarction or shock in the past 3 months.
2. Authors who have experienced severe cardiac instability, angina pectoris, massive hemoptysis, or epilepsy in the past 4 weeks.
3. Severe uncontrolled hypertension (systolic blood pressure >200mmHg, diastolic blood pressure >100mmHg).
4. Patients with thoracoabdominal aortic aneurysm.
5. Patients with recent cerebrovascular accident.
6. Those with severe hyperthyroidism (heart rate >120 beats/min).
Pulmonary function tests are safe, non-radiative and non-invasive.
Some patients may experience symptoms such as palpitation, chest tightness, and coughing, which are related to the patient’s repeated forced breathing. Most patients will be relieved after taking a short rest or drinking appropriate water, so there is no need to worry too much. However, if you experience shortness of breath, dizziness, difficulty breathing, pneumothorax, etc., you need to seek medical treatment in time.
Dizziness (synthesized by the sound of hope)
1. You can eat and drink normally on the day of the examination;
2. Do not smoke 4-6 hours before the examination;
3. Rest quietly for 15 minutes before the examination;
4. Please follow your doctor’s guidance if you need to stop taking specific inhaled drugs.
Follow the instructions of the examining doctor and perform actions such as inhaling, exhaling, and holding your breath, just like blowing up a balloon. It is easy, simple and easy to examine. The examination time is generally 10-20 minutes, and patients only need to cooperate with the doctor to get accurate examination results.
2024-01-03 10:17:30
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