title: Ask the doctor. Sometime soon I will need to have my aortic valve replaced. I like the fact that mechanical valves last longer than biological valves, but I don't like the fact that they require you to take the blood thinner Coumadin to prevent blood clots. I have heard that one of the new mechanical valves won't require Coumadin, just aspirin. Is that so?
authors.forename: Thomas H
authors.initials: TH
authors.lastname: Lee
mesh_terms: D000925:Anticoagulants / Q000008:administration & dosage / Q000009:adverse effects; D001021:Aortic Valve / Q000601:surgery*; D001705:Bioprosthesis / Q000009:adverse effects; D006350:Heart Valve Prosthesis / Q000009:adverse effects; D019918:Heart Valve Prosthesis Implantation / Q000009:adverse effects / Q000379:methods*; D006801:Humans; D011475:Prosthesis Failure; D013997:Time Factors; D014859:Warfarin / Q000008:administration & dosage / Q000009:adverse effects
chemical_list: D000925:Anticoagulants; D014859:Warfarin