The On-X aortic heart valve is the only mechanical valve FDA approved and clinically proven to be safer with less anticoagulation. In a prospective randomized clinical trial, On-X aortic heart valve patients with a reduced warfarin dose (INR 1.5–2.0) had 65% fewer harmful bleeding events without an increase in stroke risk. On-X mechanical heart valves are made with the most advanced material in the industry - pure pyrolytic carbon. The advanced design and materials make it the best lifelong heart valve replacement option available today

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