Hi, my name is Ravi and my father is a heart patient . Last three years ago, he went through a bypass surgery for his Heart and he is doing well now and he has a kidney problem as well.he did not went for check up until 2months and his creatine dramatically increases from 1.6 to 8.6 . Is 8.6 is a dangerous to a heart patient ? How it increases ? is there any solution to decrease the creatine by not doing any surgeries !! If surgery needed , is it recommended to a heart patient at this time ? Need suggestions !!