title: Ask the doctor. How do I know when my new valve isn't working correctly?
authors.forename: Thomas
authors.initials: T
authors.lastname: Lee
mesh_terms: D001021:Aortic Valve / Q000601:surgery; D019544:Equipment Failure Analysis; D006350:Heart Valve Prosthesis / Q000592:standards*; D006801:Humans; D011475:Prosthesis Failure