This is regarding My mother who is aged 47 , needs a mitral Valve Replacement . she went through Baloon Valvatomy during her 40's and she had been on Blood thinners over a decade, Now she is not doing well and Dr's are suggesting her to go over MVR , i want to understand which Valve is better for her ,she already had been on blood thinners For more than a decade , considering this ,Could you please recommend . Thanks in advance , Please give your recommendation