Tests and diagnosisBy Mayo Clinic staff
There's no specific test to identify ARDS. A diagnosis is reached by ruling out other diseases and conditions — for example, certain heart problems — that can produce similar symptoms.
- Chest X-ray. A chest X-ray can reveal which parts of your lungs have fluid in them and whether your heart is enlarged.
- Computerized tomography (CT). A CT scan combines X-ray images taken from many different directions into cross-sectional views of internal organs. CT scans can provide detailed information about the structures within the heart and lungs.
A test using blood from an artery in your wrist can measure your oxygen level. Other types of blood tests can check for signs of infection or anemia. If your doctor suspects that you have a lung infection, secretions from your airway may be tested to determine the cause of the infection.
Because the signs and symptoms of ARDS are similar to those of certain heart problems, your doctor may recommend heart tests such as:
- Electrocardiogram. This painless test tracks the electrical activity in your heart. It involves attaching several wired sensors to your body.
- Echocardiogram. A sonogram of the heart, this test can reveal problems with the structures and the function of your heart.
- What is ARDS? National Heart, Lung, and Blood Institute. http://www.nhlbi.nih.gov/health/dci/Diseases/Ards/Ards_WhatIs.html. Accessed March 4, 2011.
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- Post-ARDS tips. The ARDS Foundation. http://www.ardsusa.org/tips_post_ards.htm. Accessed March 7, 2011.