Atrial fibrillation (AFib) is an irregular heartbeat that can lead to stroke, blood clots, heart failure and other heart-related complications. The most common treatment for AFib includes taking a blood thinner like Warfarin to lower your risk of blood clots and stroke. But blood thinners come with an increased risk of bleeding, so alternatives are often requested. The WATCHMAN device offers that alternative for many patients. During a one-time procedure, WATCHMAN is permanently implanted in the heart. The device works by preventing blood clots from forming or entering the bloodstream, effectively reducing stroke risk for a lifetime and eliminating the need to take blood thinners.