Left Atrial Appendage Closure

Medically reviewed by Drugs.com. Last updated on Apr 6, 2025.

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Left atrial appendage closure (LAAC) is a procedure to block or close the left atrial appendage. The appendage is a small pouch in the heart muscle that is connected to your left atrium. Blood clots may form in the appendage if you have atrial fibrillation. This increases your risk for stroke. LAAC helps prevent blood clots from entering your bloodstream and lowers your risk for stroke.

DISCHARGE INSTRUCTIONS:

Call your local emergency number (911 in the US), or have someone call if:

• You have any of the following signs of a heart attack:
  • Squeezing, pressure, or pain in your chest
  • You may also have any of the following:
    • Discomfort or pain in your back, neck, jaw, stomach, or arm
    • Shortness of breath
    • Nausea or vomiting
    • Lightheadedness or a sudden cold sweat
• You have any of the following signs of a stroke:
  • Numbness or drooping on one side of your face
  • Weakness in an arm or leg
  • Confusion or difficulty speaking
  • Dizziness, a severe headache, or vision loss
• You have shortness of breath and sharp chest pain.
• You have lightheadedness, dizziness, or confusion.

Seek care immediately if:

• Your heart is beating faster or slower than usual.
• Your catheter site has increased bruising or swelling.

Drugs used to treat this and similar conditions

Call your doctor if:

• You have questions or concerns about your condition or care.

Medicines:

• Blood thinners help prevent blood clots. Clots can cause strokes, heart attacks, and death. Many types of blood thinners are available. Your healthcare provider will give you specific instructions for the type you are given. The following are general safety guidelines to follow while you are taking a blood thinner:
  • Watch for bleeding and bruising. Watch for bleeding from your gums or nose. Watch for blood in your urine and bowel movements. Use a soft washcloth on your skin, and a soft toothbrush to brush your teeth. This can keep your skin and gums from bleeding. If you shave, use an electric shaver. Do not play contact sports.
  • Tell your dentist and other healthcare providers that you take a blood thinner. Wear a bracelet or necklace that says you take this medicine.
  • Do not start or stop any other medicines or supplements unless your healthcare provider tells you to. Many medicines and supplements cannot be used with blood thinners.
  • Take your blood thinner exactly as prescribed by your healthcare provider. Do not skip a dose or take less than prescribed. Tell your provider right away if you forget to take your blood thinner, or if you take too much.
• Take your medicine as directed. Contact your healthcare provider if you think your medicine is not helping or if you have side effects. Tell your provider if you are allergic to any medicine. Keep a list of the medicines, vitamins, and herbs you take. Include the amounts, and when and why you take them. Bring the list or the pill bottles to follow-up visits. Carry your medicine list with you in case of an emergency.

Follow up with your doctor as directed:

You will need imaging tests to make sure the closure is not leaking. Your doctor will also help manage your medicines after the procedure. Write down your questions so you remember to ask them during your visits.

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The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

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