COPD Shortness of Breath at Rest: Causes & What Helps
By The Rehab Portal
Feeling short of breath even while resting with COPD? Learn six possible causes, ways to manage breathlessness, and when to seek medical help.
Shortness of breath is one of the most common symptoms of chronic obstructive pulmonary disease (COPD). While breathlessness often occurs during physical activity, some people experience it even when sitting, lying down, or resting.
COPD can cause shortness of breath at rest because narrowed airways, trapped air, and changes in lung function make breathing more difficult, even when your body isn't physically active.
However, breathlessness at rest can also indicate a COPD flare-up or another medical condition, especially if it's new or worsening.
Understanding what causes breathlessness and how to respond can help you manage your symptoms and recognize when to seek medical attention.
Why Does COPD Cause Shortness of Breath at Rest?
Several factors can contribute to breathlessness in people living with COPD.
1. Air Trapping and Lung Hyperinflation
COPD makes it harder to move air out of your lungs. When air becomes trapped, your lungs can remain partially inflated after you breathe out.
This is called hyperinflation.
Hyperinflation can make it more difficult for your diaphragm and other breathing muscles to work efficiently, creating a sensation of breathlessness even while resting.
2. Changes in Oxygen and Carbon Dioxide Exchange
COPD can damage the airways and air sacs responsible for exchanging oxygen and carbon dioxide.
In some people, this can lead to low blood oxygen levels or elevated carbon dioxide levels, contributing to breathing difficulties.
However, feeling short of breath doesn't always mean your oxygen levels are low. It's possible to experience significant breathlessness with normal oxygen saturation.
3. Increased Work of Breathing
When your airways are narrowed, your breathing muscles must work harder to move air in and out of your lungs.
Over time, this increased effort can contribute to fatigue and make breathing feel uncomfortable, even when you're not physically active.
4. Physical Deconditioning
People living with COPD sometimes become less active because exercise makes them feel breathless.
Over time, reduced physical activity can weaken muscles and lower endurance, making everyday activities require more effort.
Although deconditioning primarily contributes to breathlessness during activity, it can also increase the overall burden of symptoms.
5. Anxiety and Stress
Breathlessness can cause anxiety, and anxiety can make breathing feel even more difficult.
This can create a cycle where feeling short of breath leads to faster breathing and increased distress.
Breathing strategies, relaxation techniques, and appropriate medical support may help manage this cycle.
6. COPD Exacerbations or Other Health Conditions
A COPD exacerbation, sometimes called a flare-up, occurs when respiratory symptoms become worse than usual.
Respiratory infections, increased airway inflammation, or environmental irritants can trigger these episodes.
Other conditions, including heart failure, pneumonia, pulmonary embolism, or heart rhythm problems, can also cause breathlessness.
New or worsening shortness of breath at rest should never automatically be assumed to be caused by COPD alone.
What Can Help Manage COPD Breathlessness at Rest?
The best approach depends on what's causing your symptoms. If breathlessness at rest is new, worsening, or different from your usual symptoms, seek medical assessment rather than trying to manage it with exercises alone.
1. Try Pursed-Lip Breathing
Pursed-lip breathing may help some people with COPD slow their breathing and reduce the sensation of breathlessness.
To try it:
Relax your shoulders.
Breathe in gently through your nose.
Purse your lips as though you're blowing out a candle.
Breathe out slowly and gently, allowing your exhalation to last longer than your inhalation.
Avoid forcing your breath.
Learn more in our article on 5 Breathing Exercises for COPD You Can Try at Home.
2. Find a Comfortable Breathing Position
Some people find that leaning forward slightly while sitting can make breathing feel easier.
Try sitting in a sturdy chair with your feet flat on the floor and your forearms resting on your thighs or a supported surface.
Relax your shoulders and breathe gently.
3. Follow Your COPD Treatment Plan
Medications such as bronchodilators can help manage COPD symptoms by improving airflow.
Take medications as prescribed and follow your healthcare provider's instructions for managing worsening symptoms.
If your usual medication isn't providing the expected relief, contact your healthcare team.
4. Participate in Pulmonary Rehabilitation
Pulmonary rehabilitation combines aerobic exercise, strength training, education, and self-management strategies to help people with chronic lung conditions improve their physical function and quality of life.
Although pulmonary rehabilitation cannot reverse COPD, it can help reduce the impact of breathlessness and make daily activities more manageable.
5. Use Oxygen Therapy if Prescribed
Some people with COPD require supplemental oxygen because of low blood oxygen levels.
However, oxygen therapy is not appropriate for everyone who experiences breathlessness.
If you've been prescribed oxygen, use it according to your healthcare provider's instructions. Do not adjust your oxygen flow rate unless you've been given a specific plan for doing so.
When Should You Seek Medical Help?
Breathlessness at rest deserves particular attention when it is new, worsening, or different from your usual symptoms.
Seek emergency medical assistance if you experience:
Sudden or severe difficulty breathing.
Chest pain or pressure.
Fainting, severe confusion, or difficulty staying awake.
Blue or grey lips or skin.
Breathlessness so severe that you cannot speak normally.
Contact your healthcare provider promptly if you notice increased breathlessness, changes in mucus, fever, increased use of rescue medication, or other symptoms that may indicate a COPD flare-up. If you have a COPD action plan, follow the instructions provided by your healthcare team.
Frequently Asked Questions
Is it normal to feel short of breath while resting with COPD?
Some people with more advanced COPD experience breathlessness at rest. However, new or worsening breathlessness should be assessed by a healthcare professional because it may indicate a flare-up or another medical condition.
Can you feel breathless with normal oxygen levels?
Yes. Breathlessness is influenced by several factors, including airflow obstruction, air trapping, breathing muscle effort, and how the brain perceives breathing discomfort. Normal oxygen saturation does not rule out significant breathing difficulties.
Can pulmonary rehabilitation help with COPD breathlessness?
Yes. Pulmonary rehabilitation can improve exercise capacity, reduce the impact of breathlessness, and improve quality of life. It is an important part of COPD management, but it does not replace medical assessment or treatment for new or worsening symptoms.
Why is my COPD breathing worse when lying down?
Breathlessness while lying flat can have several causes, including changes in breathing mechanics or other conditions such as heart failure. If this symptom is new, worsening, or requires you to sleep propped upright, contact your healthcare provider for assessment.
Stay Active and Manage COPD With The Rehab Portal
Living with COPD can make physical activity challenging, especially when breathlessness affects your confidence and daily routine.
The Rehab Portal offers structured home-based pulmonary rehabilitation programs designed to help people living with chronic lung conditions build endurance, improve strength, and develop self-management skills.
Through guided exercise videos, breathing techniques, educational resources, and activity tracking, you can access tools to support your rehabilitation journey from home.
Explore The Rehab Portal's Pulmonary Rehabilitation Programs
Medical disclaimer: This article is for educational purposes only and does not replace medical advice, diagnosis, or treatment. New, severe, or worsening breathlessness requires appropriate medical assessment.
References
Global Initiative for Chronic Obstructive Lung Disease (GOLD). Global Strategy for the Diagnosis, Management, and Prevention of COPD. https://goldcopd.org/
American Lung Association. COPD. https://www.lung.org/lung-health-diseases/lung-disease-lookup/copd
Rochester CL, et al. (2023). Pulmonary Rehabilitation for Adults with Chronic Respiratory Disease: An Official American Thoracic Society Clinical Practice Guideline. https://doi.org/10.1164/rccm.202306-1066ST