I Am 78 (Feb. 12) And I Am Going To

I am 78 (Feb. 12) and I am going to have knee replacement surgery on Jan.23, 2017. My concern is that I have high B/P and AFIB. Therefore I take Warfarin and will have to be off of it for 5 days, at least. I will discuss with my cardiologist on the 13th of this month but would like your opinion. I have asthmatic problems as well. My history includes so many heartaches that are too numerous to name. This includes murder, suicides, amputations resulting in death, etc. Most recent is a nightmare head on collision that took the life of my 19 year old grandson. So, mentally I am recovering. Just thought it would help you to see the status of my life and the effects. Thank you for your time and consideration.