Difficulty Breathing When Lying Down
Breathlessness that worsens lying flat and eases when upright
Quick Facts
- Type: Respiratory and cardiac symptom
- Also called: Orthopnea
- Common causes: Heart failure, lung disease, obesity
- Seek urgent care: Severe breathlessness or chest pain
Overview
Difficulty breathing when lying down, known medically as orthopnea, is shortness of breath that appears or worsens when a person lies flat and improves when they sit up or stand. Many people who experience it find they need to prop themselves up on several pillows to breathe comfortably or to sleep. A closely related symptom is waking suddenly at night gasping for air, which is called paroxysmal nocturnal dyspnea.
This symptom is important because it is a classic warning sign of heart failure, where fluid shifts into the lungs when lying flat. However, it can also result from lung conditions, obesity, or other causes. Because breathlessness that depends on body position can signal a significant heart or lung problem, it should be evaluated by a clinician, and severe or sudden breathlessness needs urgent care.
A telling detail is how many pillows you need to breathe comfortably, since needing progressively more is a recognized sign that fluid is building up. It is also worth noting whether the breathlessness comes on gradually over weeks, which is common with heart failure, or suddenly, which can indicate a more acute problem. Many people first notice orthopnea as disturbed sleep, repeatedly sliding down off their pillows and waking short of breath. Tracking these changes and reporting them to a clinician helps identify the cause and how quickly it needs attention.
Common Causes
Several conditions can cause breathlessness that worsens when lying flat:
- Heart failure: The most common cause, as fluid redistributes to the lungs when lying down.
- Chronic lung disease: COPD, severe asthma, or pulmonary fibrosis.
- Fluid around the lungs: A pleural effusion making breathing harder when flat.
- Obesity: Extra weight on the chest and abdomen pressing on the lungs when lying down.
- Sleep-related breathing problems: Such as obstructive sleep apnea.
- Diaphragm weakness: Reducing the lungs' ability to expand when flat.
Anxiety and large amounts of abdominal fluid (ascites) can also contribute.
Associated Symptoms
The accompanying symptoms help reveal the cause:
- Swelling in the legs, ankles, or abdomen with heart failure
- Waking at night gasping for breath
- Fatigue and reduced ability to exercise
- A persistent cough or wheezing with lung disease
- Loud snoring and daytime sleepiness with sleep apnea
- Needing extra pillows to sleep comfortably
Severe breathlessness, chest pain, blue lips, or coughing up frothy or blood-tinged sputum are emergencies that need immediate care.
Diagnosis & Evaluation
A clinician investigates orthopnea to find the underlying cause. This may include:
- History and examination: Asking how many pillows you need and listening to the heart and lungs.
- Chest X-ray: To look for fluid in the lungs or an enlarged heart.
- Echocardiogram: An ultrasound of the heart to assess heart function.
- Blood tests: Including markers of heart strain.
- Lung function tests: If a lung cause is suspected.
- Sleep study: When sleep apnea is a possibility.
Describing exactly how lying down affects your breathing helps the clinician focus the evaluation.
Treatment & Management
Treatment depends on the underlying cause:
- For heart failure: Medications such as diuretics to remove excess fluid, plus other heart treatments.
- For lung disease: Inhalers, oxygen, or other therapies as appropriate.
- For sleep apnea: A CPAP machine and lifestyle measures.
- For obesity: Weight management to reduce pressure on the lungs.
- For pleural effusion: Draining fluid and treating the cause.
- Positioning: Sleeping more upright can ease symptoms while the cause is treated.
Treating the root cause usually improves the ability to lie flat comfortably.
Self-Care & Prevention
- Take heart and lung medications exactly as prescribed
- Limit excess salt if you have heart failure or fluid retention
- Maintain a healthy weight
- Avoid smoking
- Use prescribed CPAP if you have sleep apnea
- Track your weight and report sudden increases, which can signal fluid buildup
When to See a Doctor
See a clinician promptly if you find you need more pillows than usual to breathe, wake at night short of breath, or notice new leg swelling. Call emergency services right away for:
- Severe or sudden shortness of breath
- Chest pain or pressure
- Blue or gray lips or face
- Coughing up frothy or blood-tinged sputum
- Confusion or fainting
These can indicate a heart or lung emergency that needs immediate treatment.
Frequently Asked Questions
Why do I get short of breath when lying down?
Breathlessness when lying flat, called orthopnea, often results from heart failure, where fluid shifts into the lungs in that position. Lung disease, obesity, fluid around the lungs, and sleep apnea can also cause it. Because it can signal a heart or lung problem, it should be evaluated.
Is needing extra pillows to breathe a sign of heart failure?
It can be. Needing to prop yourself up on several pillows to breathe comfortably is a classic sign of heart failure. It is not the only cause, but it is worth seeing a clinician, especially if you also have leg swelling or wake at night short of breath.
What is paroxysmal nocturnal dyspnea?
It is the symptom of waking suddenly during the night gasping for air, often relieved by sitting up. Like orthopnea, it is closely associated with heart failure and should be evaluated by a clinician.
When is difficulty breathing when lying down an emergency?
Call emergency services for severe or sudden breathlessness, chest pain, blue or gray lips, coughing up frothy or blood-tinged sputum, or confusion. These can indicate a heart or lung emergency that needs immediate care.
Can losing weight help breathing when lying down?
Yes, if extra weight on the chest and abdomen is contributing. Weight management can ease the pressure on the lungs and improve breathing when lying flat, alongside treating any underlying heart, lung, or sleep condition.
References
- Mayo Clinic. Shortness of breath.
- American Heart Association. Heart failure signs and symptoms.
- National Heart, Lung, and Blood Institute (NHLBI). Heart failure.
- MedlinePlus, U.S. National Library of Medicine. Breathing difficulty lying down.