What is pericarditis?
Pericarditis is inflammation of the pericardium, the thin sac (membrane) that surrounds the heart.
The pericardium holds the heart in place and helps it work properly. There is a small amount of fluid between the inner and outer layers of the pericardium. This fluid keeps the layers from rubbing as the heart moves to pump blood.
What causes pericarditis?
Usually, the cause of pericarditis is unknown, but may include:
- Infection by viruses, bacteria, a
fungus, or parasites
- Autoimmune disorder(such as lupus,
rheumatoid arthritis, or scleroderma
- Inflammation after a heart attack
- Chest injury
- Kidney failure
- Medical treatments such as certain
medicines or radiation therapy to the chest
- Heart surgery
What are the symptoms of pericarditis?
The following are the most common signs of pericarditis:
- Chest pain that:
- Can especially be felt behind
the breastbone, and sometimes beneath the collarbone (clavicle), neck, and left
- Is a sharp, piercing pain over
the center or left side of the chest that gets worse when you take a deep
breath. It usually gets better if you sit up or lean forward.
- Feels a lot like a heart attack
- Can especially be felt behind
- Weakness and tiredness
- Trouble breathing
- Pain when swallowing
- Pounding feeling when your heart
The symptoms of pericarditis may look like other conditions. See a healthcare provider for a diagnosis.
How is pericarditis diagnosed?
If your healthcare provider
suspects pericarditis, he or she will listen to your heart very carefully. A common sign
of pericarditis is a pericardial rub. This is the sound of the pericardium rubbing
against the outer layer of your heart. Other chest sounds that are signs of fluid in the
pericardium (pericardial effusion) or the lungs (pleural effusion) may also be
Your healthcare provider may also check for pulsus paradoxus. This is when your blood
pressure drops when you take a deep breath. The changes in the pressure in your chest
keep blood from returning from your body and entering your heart.
Along with a health history and
physical exam, you may also need certain tests. These may include:
(echo). This test uses sound waves to
check your heart’s size and shape. The echo sound waves create a picture on a screen
as an ultrasound transducer is passed over the skin over the heart. Echo can show how
well your heart is working and whether fluid has built up around your heart.
(ECG). This test records the strength
and timing of the electrical activity of the heart. It shows abnormal rhythms and can
sometimes detect heart muscle damage. Small sensors are taped to your skin to pick up
the electrical activity.
Chest X-ray. An X-ray may be done to
check your lungs and see if your heart is enlarged.
Cardiac MRI. This is an imaging test
that takes detailed pictures of the heart. It may be used to look for thickening or
other changes in the pericardium.
Cardiac CT. This type of X-ray takes
a clear, detailed picture of your heart and pericardium. It may be used to help rule
out other causes of chest pain.
Blood tests. Certain blood tests can
help rule out other heart problems, such as heart attack, and can tell the doctor how
much inflammation there is in your body.