i am giving u info about my modr whose valva was replacd via robot surgery around 11 yrs ago n frm last 3 weeks she had developd vegetation on valve which is around 5 mm,, sh ez been taking antibiotics as sugestd in blud culture report,, bt hr inr levels remain til 1.60,, it gets reducd too inspite of takin 8mg acitrom, kindly sugest me how to get inr level set