Atrial fibrillation is an abnormal beating of the top part of the heart (atria). People with atrial fibrillation have a high risk of blood clots and
stroke. The abnormal beat makes it harder for blood to clear out of the atria and blood pools in the LAA. Blood clots can develop in the pooled blood, can leave the heart and travel to the brain where it can cause a stroke. Medications are a common option to reduce the risk of blood clots and stroke, but not all people can tolerate the medication or its side effects.
An LAAC may be an alternative for people with atrial fibrillation who cannot take anticoagulant medications. LAAC closes off the left atrial appendage to prevent blood from pooling in the area. Most blood clots in the heart develop in the left atrial appendage. Sealing off the area will decrease the chance of clots and stroke.
Talk to your doctor about your medications, including over-the-counter medications. You may be asked to stop taking some medications up to 1 week before the procedure.
Arrange for someone to drive you home from the hospital and help you out at home.
Eat a light meal the night before. Do not eat or drink anything after midnight.
Local or general anesthesia may be used. Local anesthesia will numb where the catheter is inserted. With general anesthesia, you will be asleep during the procedure. You may also be given a sedative before the procedure to help you relax.
This method only needs a small incision which can decrease risks and recovery time compared to open procedures with large incisions.
A small incision will be made over a vein in the groin. A tube called a catheter will be placed into the vein and passed through blood vessels to the heart. An imaging machine will help the doctor see exactly where the catheter is in the body.
Tools or devices will be passed through the catheter to complete the work. The exact steps will depend on the type of LAAC. Some options include:
Placing a device in the LAA to block off the area. The device will also catch any blood clots that already exist before they pass out of the heart. Over time, tissue will form over the filter to seal it.
The area is closed off with wire and stitches to keep blood out.
Once the procedure is done the catheter(s) will be removed. Pressure will be applied to the incision to stop bleeding and a bandage will be placed over the area.
Right after the procedure, a weight will be placed over your leg for a time to help the vein close. The staff will check your vital signs and monitor you for any bleeding.
Images will be taken to ensure the device is correctly placed.
During your stay, the hospital staff will take steps to reduce your chance of infection such as:
Washing their hands
Wearing gloves or masks
There are also steps you can take to reduce your chance of infection such as:
Washing your hands often and reminding visitors and healthcare providers to do the same
Reminding your healthcare providers to wear gloves or masks
Most will return to normal activities within the first few days. Follow-up visits will be needed starting at 45 days to make sure the area has sealed off. Once the area is sealed, anticoagulant medication can be stopped. Most will be able to stop medication by 1 year. Yearly tests will be needed to make sure the closure device is in place.