![]() A long, flexible tube (catheter) is inserted in a blood vessel, usually in the groin or wrist. It helps health care providers see blockages in the heart arteries. This test may be done if other tests don't show the cause of pulmonary edema, or when there's also chest pain. Cardiac catheterization and coronary angiogram.An echocardiogram can help diagnose fluid around the heart (pericardial effusion). It can identify areas of poor blood flow, heart valve issues and heart muscle that is not working properly. An echocardiogram uses sound waves (ultrasound) to create pictures of the beating heart. A portable device such as a Holter monitor may be used to continuously monitor the heartbeat at home. An electrocardiogram (ECG) can show signs of heart wall thickening or previous heart attack. Wires attach the sensors to a machine, which displays or prints results. It uses small sensors (electrodes) attached to the chest and sometimes to the arms or legs. This painless test detects and records the timing and strength of the heart's signals. Blood tests to diagnose pulmonary edema and its causes also usually include a complete blood count, metabolic panel to check kidney function and thyroid function test. Increased levels of B-type natriuretic peptide (BNP) may signal a heart condition. B-type natriuretic peptide (BNP) blood test.This test measures the amount of oxygen and carbon dioxide in the blood. ![]() It uses light to determine how much oxygen is in the blood. It can help a provider diagnose or rule out pulmonary edema. A chest computed tomography (CT) scan gives more details about the condition of the lungs. Chest computerized tomography (CT) scan.It's usually the first test done when a health care provider suspects pulmonary edema. A chest X-ray can confirm the diagnosis of pulmonary edema and exclude other possible causes of shortness of breath. Tests that can help diagnose pulmonary edema or determine the reason for fluid in the lungs include: ![]() Once the condition is more stable, the provider can ask about medical history, especially a history of cardiovascular or lung disease. A health care provider can base a diagnosis of pulmonary edema on the symptoms and the results of a physical exam and certain tests. Breathing problems require immediate diagnosis and treatment.
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