Your doctor has recommended you undergo a procedure called a left atrial appendage (LAA) closure.
You might not have heard this medical term before now and may be feeling unsure about the nature of the procedure.
This information sheet will outline what the procedure is and what preparations and risks are involved.
After you read this information sheet, you might still have questions. If you do, please contact the team at Heart HQ. We’re here to help.
The LAA is like a small pouch about the size of your thumb located near the top of your heart. If you suffer from a condition called atrial fibrillation (AF), blood can stagnate and form clots inside your LAA. Blood clotting is a major cause of stroke. Around 15 million people per year worldwide suffer stroke, resulting in approximately 5 million deaths and another 5 million who become permanently disabled.
If you have a history of AF, an LAA closure procedure may be an alternative to taking Warfarin (blood thinning medication) long term.
LAA closure is indicated for patients who have AF and who are at high risk for stoke but cannot take oral anticoagulant therapy (e.g. Warfarin or an NOAC) because of issues with bleeding.
An occluder will be implanted into your LAA to permanently close off the pouch and prevent harmful blood clots from entering the bloodstream.
This procedure is normally performed under general anaesthetic. It is a one-time implant and the device does not need to be replaced.
Your doctor will guide the occluder through a catheter inserted through a vein in your groin. The position of the device will be followed using ultrasound images generated by a transoesophageal echocardiogram (a very small ultrasound probe in your oesophagus). Once the occluder is in the correct position, your doctor will release the implant to leave it permanently fixed in your heart.
This procedure requires you to have general anaesthetic. The anaesthetic will be given to you through your IV line.
Please arrange to have a support person (a relative or friend) collect you from hospital and ensure someone stays with you that night. You should not drive or make any important decisions in the 24 hours following general anaesthetic.
If you have any concerns about your anaesthetic, please discuss these with your doctor as soon as you can.
Once the catheter is removed and the puncture site sealed, you’ll spend overnight in recovery and coronary care. You’ll need to avoid heavy lifting and exercise for a few days but should be able to resume normal activities in a week or so. You may be instructed to take blood-thinning medication after your procedure.
Your cardiologist will do a follow-up echocardiogram with you around four to six weeks after your implant procedure.
Any kind of procedure carries some element of risk, often very small and rare.
Your doctor has balanced the benefits and risks of carrying out the test against the benefits and risk of not proceeding. If your doctor has recommended this procedure, they believe there is benefit to you going ahead.
It’s important you understand the risks involved so you can make an informed decision.
Here are the most commonly reported risks and complications associated with an LAA closure implant.
Common risks and complications (more than 5% of cases)
Uncommon risks and complications (1–5% of cases)
A stroke—this can cause long term disability
Embolism—a blood clot may form and break off from the catheter which will be treated with blood thinning medication
Accidental puncture of the heart—this may need surgery to repair
Rare risks and complications (less than 1% of cases)
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