How healthy are your lungs? Let's learn about the Spirometry test in a simple way!

Breathing is so important to us, isn't it? It's like the engine of our body. But sometimes, our respiratory system, especially the lungs, can have little problems. Then our doctors want to know exactly what condition these lungs are in and how well they are working. That's when this special test called spirometry can help us. When you hear this name, it may sound like a big deal, but it's really simple.

What is spirometry? Is it that difficult?

Simply put, spirometry is a very simple breathing test that measures the function of your lungs. It mainly looks at how much air you can take in with one breath, how much air you can exhale, and how fast you can exhale that air .

Think of it like blowing out the candles on your birthday cake. There's no pain or discomfort. The little machine used to do this test is called a spirometer . It doesn't put anything into your body, so there's no need to worry.

Why is this spirometry test performed? Who is it important to?

Now you may be wondering, "Why do I need this test ?" Spirometry is often done for several reasons:

• Identify lung diseases: Do you have a frequent cough? Do you feel short of breath? Do you have a wheezing sound in your chest? Or does your chest feel a little tight? If you have these symptoms, this test can help find the cause. Specifically:
• Asthma : This is a disease that many people are familiar with. In this, the airways become narrowed.
• COPD ( Chronic Obstructive Pulmonary Disease ): This is a bit of a long-term name. Simply put, this is also a long-term condition that interferes with the flow of air into and out of the lungs. It is more common in people who smoke .
• Cystic Fibrosis : This is a genetic disease that affects the lungs as well as other parts of the body.
• Pulmonary Fibrosis : This is a condition in which the lung tissue gradually thickens and becomes stiff. The lungs do not inflate properly.

• Monitor the status of an existing lung disease: If you already have a lung disease, this test is also done to see if the medication you are taking is working properly and if the disease has improved or worsened.

• Check lung function before surgery: This is important before some major surgeries, especially if you are a smoker or have lung-related symptoms, to see how well your lungs will tolerate anesthesia.

• Detect work-related lung diseases: This test is also used to determine if there is a risk of lung damage due to dust and chemicals found in some workplaces.

Imagine, a friend of yours, let's say Chamal. Chamal would wheeze when he climbed a flight of stairs or ran for the bus. When he found a doctor, he asked Chamal to do a spirometry test. That's how he was diagnosed with asthma. Now, Chamal is taking his medication properly and has no problems.

How is this spirometry test done? Is it a big deal?

Okay, now let's see how to do this test. It's very simple, there's nothing to be afraid of.

1. Preparation: You will be seated very comfortably in a chair.

2. A nose clip: A small clip is placed on your nose. This is done so that when you breathe, you only breathe through your mouth, not your nose. This is how you can get an accurate measurement.

3. Mouthpiece: Next, you will be asked to hold the mouthpiece of a cleaned tube connected to the spirometer tightly in your mouth. You need to seal it tightly with both lips so that no air escapes.

4. Breathing process:

• First, breathe normally a few times.
• Then, they are asked to take a deep breath in , until both lungs are filled with air.
• Next, you need to blow all that air out as fast and hard as you can. Like blowing out a candle, but a little harder, and for as long as you can (at least 6 seconds).

5. Encouragement: The technician who is performing the test will encourage you by saying things like "More! More! Breathe! Good! Good!" They know that they want you to do your best.

6. Repeat: Usually, this is done exactly at least three times to get the most accurate results.

Sometimes, after this test, you are given a short dose of a bronchodilator (usually an inhaler) and then the test is repeated 15-20 minutes later. This is to see if your breathing improves after taking the medicine. This is especially important for diagnosing conditions like asthma.

You may feel a little tired during this test, because you have to exhale as much air as possible. But there is no pain at all.

Are there any things we need to prepare before the test?

Yes, to get accurate results from the test, there are a few things to be careful about.

• Medications: Tell your doctor in advance about all medications you take, especially inhalers used for lung conditions. You may be asked to stop using some inhalers a few hours before the test.
• Smoking: Avoid smoking for at least an hour before the test. It is best to abstain from smoking for at least 24 hours if possible.
• Alcohol: Do not consume alcohol on the day of the test.
• Food: Avoid eating a large meal about two hours before the test. It is okay to eat a light meal.
• Caffeine: It is best to reduce the consumption of caffeinated beverages such as tea and coffee a few hours before the test.
• Clothing: Wear loose, breathable clothing . Avoid tight clothing.
• Exercise: Avoid strenuous exercise for about 30 minutes before the test.

If you take care of these things, you can get a more accurate result.

What do the results of this test say?

Don't worry if the results of the test seem a bit scientific. Your doctor will explain everything to you in simple terms. There are a few main measurements that will be taken:

• FVC (Forced Vital Capacity): This is the total amount of air you can forcefully exhale after taking a deep breath. Simply put, it is the maximum amount of air your lungs can hold .
• FEV1 (Forced Expiratory Volume in 1 second): This is the amount of air that can be exhaled in the first second when you exhale forcefully. This shows how quickly air is being expelled from the lungs.
• FEV1/FVC ratio: The ratio of the two values ​​mentioned above is also very important.

These values ​​are compared with the normal values ​​for your age, height, gender, and race.

• Obstructive pattern: If your FEV1 is much lower than your FVC, and your FEV1/FVC ratio is low, it means there is some obstruction (e.g., narrowing) in your airways. This can be seen in conditions like asthma and COPD.
• Restrictive pattern: If your FVC is low, but your FEV1/FVC ratio is normal or higher, it means that your lungs are not able to inflate properly (the lungs are not inflating properly). This can be seen in conditions like Pulmonary Fibrosis.

The most important thing is, don't try to interpret these results on your own. Your doctor will compare these spirometry results with your symptoms and other test reports and explain them in a way that you can understand.

Are there any side effects to this? Is it a bit difficult?

Spirometry is generally a very safe test . Serious side effects are rare. However, because the test requires you to breathe out forcefully, there may be some minor discomforts:

• You may feel dizzy or lightheaded . This will go away on its own after a while.
• After the test, you may experience increased breathing rate or feel a little lightheaded for a while .
• Some people may have a cough .
• You may feel a little tired .

Very rarely, some people may experience a sudden narrowing of the airways in the lungs ( bronchospasm ), especially in people with severe asthma. However, because the test is performed under medical supervision, if this happens, it can be treated quickly.

You should definitely tell your doctor if you have recently had a heart attack, eye surgery, chest or abdominal surgery, an aneurysm in the brain, or active tuberculosis (TB ). This test may not be appropriate in such cases, or may need to be performed with special care.

What happens after the test?

After the test is over, you can go about your normal activities. If you have used a bronchodilator too much, you may feel a little shaky in your arms or a little faster in your heart for a while. This will pass in a short time.

Then, your doctor will discuss the test results with you. They will explain what the results mean and what steps you need to take next (such as further testing, starting medication, or changing your current medication).

So, what are the most important things we need to remember?

Okay, so let's summarize the most important things to remember from what we've talked about:

• Spirometry is a simple, painless breathing test to assess the health of your lungs.
• This is a great help in diagnosing and monitoring lung diseases like asthma and COPD.
• Taking the test is like blowing out candles on a birthday , it's not too difficult. But you have to put in a good effort.
• Follow the doctor's instructions carefully before the test (about food, drink, and medication).
• Don't be afraid of the results or make decisions alone . Discuss everything with your doctor and seek his advice.

So, if you have any lung problems and a doctor tells you to do this spirometry test, there's no reason to be afraid of it. Just remember that it's an important step to ensure the health of your lungs. Good luck!

spirometry, lung test, breathing test, asthma, COPD, lung function, respiratory disease