Lariat Left Atrial Appendage Closure

Related Conditions

Atrial Fibrillation


Our Providers

Lariat Left Atrial Appendage Closure

UW Health Heart, Vascular and Thoracic Care providers at UW Hospital and Clinics in Madison, Wisconsin, offer left atrial appendage closure, an innovative treatment to decrease the risk of stroke in patients with atrial fibrillation who are unable to take blood thinning medications.


During this minimally-invasive procedure, surgeons tie off the heart's left atrial appendage, where blood clots typically form.


The Importance of Treating Atrial Fibrillation


Patients with atrial fibrillation are at high risk of having a stroke due to blood clots that form in the left atrial appendage, a pouch that extends from the top left chamber of the heart. Blood pools and clots in the left atrial appendage, and parts of the clot may break off and travel to other areas of the body to cause a stroke and/or block blood flow to the body.


About the Lariat™ Procedure


X-ray image of the Lariat snare being deployed on the left atrial appendage.  This allows the left atrial appendage to be closed.The procedure is performed under general anesthesia. During the procedure, surgeons use the Lariat™ device to tie off the heart's left atrial appendage. The procedure seals off this area from the rest of the heart and blocks stroke-causing blood clots from traveling to the brain.


The procedure eliminates the main source of atrial fibrillation-related stroke risk and eliminates the need for blood thinning medications and open heart surgery. Only the left atrial appendage is tied off, so this procedure does not affect blood flow to any other part of the heart.


Surgical Candidates


Not everyone is a candidate for the procedure. Patients are encouraged to contact their physician for more information about this procedure.