IN 2007 ,i had Ovarian Cancer,tumer ,removed complete heystretomy. 2009 had heart valve replacement.On Coumadine,and my PT- INR ,WAS like 96 something,and 8.do i have risk involved here?was put on antibiotics gor lung infection,i have emphysema 1st stage,but on 2 litter oxygen at home. can you answer for me,so i can rest? YYYY@YYYY ;;;;;age 51-female