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What is cardiac tamponade? — Cardiac tamponade is a condition in which extra fluid builds up around the heart and presses on it. The pressure builds up in a sac around the heart called the "pericardium" (figure 1). The pressure can be mild or severe. Cardiac tamponade can happen after a heart attack, or after heart or lung surgery. It can also be related to an infection, cancer that has spread, or injury to the chest.
Cardiac tamponade keeps the heart from getting enough blood back from the rest of the body. If the heart does not get enough blood back, it cannot pump as much out to the body again. This can cause serious health problems. Cardiac tamponade that happens suddenly, such as from an accident, can be very serious. It can even cause death.
What are the symptoms of cardiac tamponade? — The symptoms are different depending on whether cardiac tamponade happens suddenly or slowly.
If cardiac tamponade happens suddenly, symptoms can include:
●Chest pain
●Shortness of breath, fast breathing, or both
●Dizziness or fainting
If cardiac tamponade happens slowly, symptoms can include:
●Tiredness
●Shortness of breath
●Chest pain or discomfort, such as feeling like the chest is heavy or full
●Fainting, or feeling faint
●Swelling in the lower legs
Will I need tests? — Yes. If the doctor thinks that you have cardiac tamponade, you will probably have the following tests:
●Electrocardiogram ("ECG") – This test measures the electrical activity in your heart (figure 2). It can show an abnormal heartbeat. Most people with cardiac tamponade have a fast heartbeat.
●Echocardiogram – This test uses sound waves to create a picture of your heart as it beats (figure 3). It shows the different parts of the heart and how well it is working. If you have fluid around your heart, this test can show the doctor if the fluid could cause cardiac tamponade.
You might also have a chest X-ray. A chest X-ray can show if the heart is larger than it should be. This can happen if cardiac tamponade happens slowly.
How is cardiac tamponade treated? — Cardiac tamponade is usually treated by draining the extra fluid from the sac around the heart. This relieves the pressure on the heart and allows it to pump better.
To drain the fluid, doctors can use a needle and thin tube, or do surgery. If cardiac tamponade happens suddenly, the doctor might do surgery right away.
After the doctor drains the fluid, they will usually order another echocardiogram. This test shows if enough fluid was drained. It can also show if the fluid comes back.
Patient education: Pericarditis in adults (The Basics)
Patient education: What can go wrong after a heart attack? (The Basics)
Patient education: Pericarditis (Beyond the Basics)
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