I have an artificial valve -- do I need to take blood thinners?

Many people with mechanical valves will need to take warfarin to prevent clots from forming on the artificial valve. These clots may then travel to other parts of the body. Many patients with the abnormal rhythm known as atrial fibrillation will also need to take warfarin regardless of the type of valve which is placed. Aspirin or other agents may be used instead of, or in addition to warfarin.