Spirometry

Overview

Spirometry is a simple breathing test that measures how much air you can breathe out and how fast. It helps check how well your lungs are working.

Spirometry is a very common test. Millions of people have it done each year to check for lung problems.

Spirometry is used for people of all ages who have symptoms of lung disease or are at risk, such as smokers. It is also used to monitor people with known lung conditions.

Symptoms

Common symptoms

• Shortness of breath
• Wheezing (a whistling sound when breathing)
• Chronic cough (cough that lasts for weeks)
• Coughing up mucus
• Chest tightness

Symptoms in children

• Persistent coughing, especially at night or during play
• Trouble keeping up with friends during physical activity
• Rapid breathing or shortness of breath

Symptoms in older adults

• Getting tired easily with everyday tasks
• Worsening breathlessness over time
• Frequent chest infections

Causes

Main causes

• Spirometry results can be abnormal due to lung conditions like asthma, COPD, or pulmonary fibrosis.
• It can also show problems with the chest wall or muscles that help breathing.
• Temporary factors like recent illness, smoking, or certain medications can affect results.

Risk factors

• Smoking or long-term exposure to air pollution
• Family history of lung disease
• Working in jobs with dust, chemicals, or fumes
• Being over 40 years old

When to see a doctor

See a doctor urgently if:

• If you have sudden or worsening shortness of breath with chest pain or blue lips, call your local emergency number immediately.

Book a routine appointment if:

• If you have a chronic cough, wheezing, or ongoing breathlessness, make an appointment with your doctor.
• If you are a smoker over 40 with a persistent cough, talk to your doctor about a spirometry test.

Diagnosis

Spirometry is the main test to measure lung function. Your doctor will refer you for the test if you have symptoms or risk factors. The results help diagnose conditions like asthma or COPD.

Tests that may be done

• Spirometry (breathing test)
• Sometimes additional tests like a chest X-ray or blood tests to confirm the cause.

What to expect at your appointment

You will be seated comfortably. A nurse will ask you to take a deep breath and then blow into a tube as hard and fast as you can. You may need to do this a few times to get the best reading. The test is not painful, but you might feel a little lightheaded briefly. Avoid eating a heavy meal, smoking, or using certain inhalers for a few hours before the test as directed by your doctor.

Treatment

Spirometry itself does not treat anything. It provides information that guides treatment. Depending on the results, your doctor may recommend lifestyle changes, inhalers, or other therapies for the underlying condition.

Self-care at home

• Stop smoking – your doctor can help with resources to quit.
• Avoid triggers like dust, pollen, or strong fumes.
• Stay active with gentle exercise as advised.
• Follow your treatment plan and use inhalers correctly.

Medical treatments

If spirometry shows a lung condition, treatments may include inhaled medications (such as bronchodilators or steroids), pulmonary rehabilitation (a program of exercise and education), and oxygen therapy if needed. Your doctor will discuss the best options based on your results.

When is surgery considered?

Surgery is generally not needed for conditions diagnosed by spirometry, except in rare cases of severe lung damage when a lung transplant may be considered.

Living with this condition

If you have a lung condition found by spirometry, you can still live a full life. Work with your healthcare team to manage symptoms, avoid triggers, and stay as active as possible.

Lifestyle tips

• Quit smoking and avoid secondhand smoke.
• Get regular physical activity like walking or swimming.
• Practice breathing exercises to strengthen your lungs.
• Get vaccinated against flu and pneumonia to prevent infections.

Diet and exercise

Eating a balanced diet with plenty of fruits and vegetables can help your overall health. Aim for regular exercise that does not leave you too breathless; ask your doctor for a safe plan.

Mental health and emotional wellbeing

Living with a lung condition can be stressful or worrying. It is normal to feel anxious or down at times. Talk to your doctor or a counselor if these feelings affect your daily life. You are not alone.

Prevention

You cannot always prevent lung conditions, but spirometry can help catch them early. Avoiding smoking and reducing exposure to pollutants lowers your risk.

Vaccines

Vaccines for flu and pneumonia are recommended for people with lung conditions. Ask your doctor or pharmacist about which vaccines are right for you.

Screening programmes

Spirometry may be used as a screening test for people at high risk, such as long-term smokers over 40. Talk to your doctor if you think you need a check.

Complications

If left untreated

• If a lung condition found by spirometry is not treated, symptoms can get worse over time.
• It may lead to more frequent infections or hospital stays.
• Severe untreated lung disease can cause heart problems or breathing failure.

Long-term outlook

With proper diagnosis and treatment, most people with lung conditions can manage their symptoms and enjoy a good quality of life. Early detection with spirometry gives you the best chance to stay well.

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