Diagnosis of Pericardial Effusion continued...
If a pericardial effusion is suspected, the best test to make the diagnosis is an echocardiogram (ultrasound of the heart). The excess fluid around the heart is usually seen easily on an echocardiogram, confirming the diagnosis of pericardial effusion.
Once a pericardial effusion is identified, a doctor assesses its size and severity. In most cases, the pericardial effusion is small and causes no serious problems. In contrast, large pericardial effusions can compress the heart and impair its ability to pump blood. This condition, called cardiac tamponade, is a potentially life-threatening result of a pericardial effusion.
To try to identify the cause of a pericardial effusion, a doctor may recommend taking a sample of the pericardial fluid. In this procedure, called pericardiocentesis, a doctor inserts a needle through the chest and into the pericardial effusion, and withdraws pericardial fluid.
Treatment of Pericardial Effusion
The treatment of a pericardial effusion depends on its severity and its cause. Small pericardial effusions without symptoms and due to known causes (for example, kidney failure) require no special treatment.
For pericardial effusions due to pericarditis, treating the pericarditis also treats the pericardial effusion. Treatments for pericardial effusions due to pericarditis include:
- Nonsteroidal anti-inflammatory drugs (NSAIDs) such as Motrin, Aleve, and Indocin
- Corticosteroids, such as prednisone and Solu-Medrol
If severe infection or heart impairment (cardiac tamponade) is present, the pericardial effusion must be drained urgently. Drainage of pericardial effusions is done in two ways:
Pericardiocentesis: A doctor inserts a needle through the chest into the pericardial effusion. A catheter is advanced into the fluid, and the pericardial effusion is suctioned out.
Pericardiectomy (pericardial window): A surgeon makes an incision in the chest, reaches in, and cuts away part of the pericardium. This drains the pericardial effusion and usually prevents it from coming back. Pericardiectomy requires general anesthesia and carries greater risks than pericardiocentesis.
Pericardial effusions that have been present for three months or more are called chronic pericardial effusions. Often, no cause can be identified. Chronic pericardial effusions are often monitored without treatment. If they begin to cause symptoms or heart impairment, drainage of the pericardial effusion is usually necessary.
Many pericardial effusions are caused by particular medical conditions, such as HIV infection, lupus, or tuberculosis. In these cases, treating the underlying medical condition will often help treat the pericardial effusion.