Acute Respiratory Failure

Medically reviewed by Drugs.com. Last updated on May 4, 2025.

Acute respiratory failure (ARF) is a condition that happens when your lungs cannot get enough oxygen into your blood. ARF can also happen when your lungs cannot get the carbon dioxide out of your blood. A buildup of carbon dioxide in your blood can cause damage to your organs. The decrease in oxygen and the buildup of carbon dioxide can happen at the same time. Acute respiratory failure may develop in minutes, hours, or days.

DISCHARGE INSTRUCTIONS:

Call your local emergency number (911 in the US) or have someone call if:

You have more trouble catching your breath.
You have stopped breathing.

Call your doctor if:

You have new symptoms.
Your symptoms get worse.
You have questions or concerns about your condition or care.

Medicines:

Medicines may be given to open your airways or relieve fluid buildup in your arms or legs. You may also need medicines to treat the cause of your ARF.
Take your medicine as directed. Contact your healthcare provider if you think your medicine is not helping or if you have side effects. Tell your provider if you are allergic to any medicine. Keep a list of the medicines, vitamins, and herbs you take. Include the amounts, and when and why you take them. Bring the list or the pill bottles to follow-up visits. Carry your medicine list with you in case of an emergency.

Manage or prevent shortness of breath:

Check your oxygen level, if directed. Your healthcare provider may recommend you use a pulse oximeter (pulse ox). A pulse ox is a device that measures the amount of oxygen in your blood. You may be given an oxygen level goal for when you are at rest and another goal for activity.
Use your oxygen as directed. You may need extra oxygen if your blood oxygen level is lower than it should be.
Use pursed-lip breathing any time you feel short of breath. Take a deep breath in through your nose. Slowly breathe out through your mouth with your lips pursed for twice as long as you inhaled. You can also practice this breathing pattern while you bend, lift, climb stairs, or exercise. It slows down your breathing and helps move more air in and out of your lungs.

Manage ARF:

Do not smoke. Nicotine and other chemicals in cigarettes and cigars can cause lung damage and make your symptoms worse. Ask your healthcare provider for information if you currently smoke and need help to quit. E-cigarettes or smokeless tobacco still contain nicotine. Talk to your healthcare provider before you use these products. Secondhand smoke can also make your symptoms worse. Avoid others who are smoking.
Prevent the spread of germs. Wash your hands often with soap and water. Use gel hand cleanser when soap and water are not available. Do not touch your eyes, nose, or mouth unless you have washed your hands first. Cover your mouth when you cough. Cough into a tissue or your shirtsleeve so you do not spread germs from your hands. If you are sick, stay away from others as much as possible.
Limit alcohol. A drink of alcohol is 12 ounces of beer, 5 ounces of wine, or 1½ ounces of liquor.
Ask about vaccines you may need. Vaccines can help prevent some lung infections. Examples include pneumonia, COVID-19, pertussis (whooping cough), tuberculosis (TB), and diphtheria. Get a flu vaccine every year as soon as it is recommended, usually in September or October.
Prepare for emergencies. Keep phone numbers for your healthcare provider, hospital, and someone close to you with you at all times.

Follow up with your doctor as directed:

You may need more tests or treatments. Write down your questions so you remember to ask them during your visits.

The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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