Respiratory Failure

(Lung Failure)

Reviewed/Revised Jul 2024
VIEW PROFESSIONAL VERSION
Get the full details

What's respiratory failure?

Respiratory failure is when your breathing isn't good enough.

  • You breathe in (inhale) to get oxygen from the air into your blood

  • You breathe out (exhale) to get rid of carbon dioxide from your blood

  • Any problem that slows or blocks your breathing can cause respiratory failure

  • Your blood may have too little oxygen, too much carbon dioxide, or both

  • Doctors treat the cause of respiratory failure

  • You often need extra oxygen and sometimes a ventilator (breathing machine)

What causes respiratory failure?

What are the symptoms of respiratory failure?

At first you may:

  • Feel short of breath

  • Have a blue color to your lips and sometimes to your skin

Later on you:

  • Become sleepy and confused

Without treatment, you may go into a coma and die.

How do doctors know I have respiratory failure?

Doctors usually know based on your symptoms. They also:

  • Put a sensor on your finger to measure the oxygen level in your blood

  • Do a blood test to measure the level of oxygen and carbon dioxide

They also do a chest x-ray and various other tests to look for the cause of your respiratory failure.

How do doctors treat respiratory failure?

You'll need to be in an intensive care unit (ICU). An ICU is an area in the hospital for people who are seriously ill. Doctors will treat the problem that caused respiratory failure and may:

quizzes_lightbulb_red
Test your KnowledgeTake a Quiz!
Download the free MSD Manual App iOS ANDROID
Download the free MSD Manual App iOS ANDROID
Download the free MSD Manual App iOS ANDROID