Left Atrial Appendage Closure

Left atrial appendage closure is a procedure to close a small “pouch” in the left atrium of the heart. This appendage in the heart is a common place where blood clots can form, especially for those who have atrial fibrillation (AF). Closing off the left atrial appendage​ with a device is a new type of medical procedure to prevent the formation of blood clots.


The illustration above shows where the left atrial appendage is in your heart and where the closure device is implanted.*


The Watchman device in the image above is implanted in the left atrial appendage in your heart to prevent clots from forming and this helps to prevent strokes.*

*Images are provided by Boston Scientific