Suggest Prognosis Of Double Bypass Surgery, Kidney And Liver Failure, Atrial Fibrillation

Hello, my name is Stephanie. My spouse s grandmother (89 yof) had double bypass surgery last week. She was taken off the vent, and in the last two days has been put back on the vent, is in active kidney and liver failure (with obivous jaundicing) and on a Dopamine drip. This morning she has jumped into a juncitional rhythm but has since gone back into A-Fib. I would like a VERY honest opinion on her expectancy. I am a nurse, my spouse a medic and my initial thought is not through the day. However, the CCU nurses have told us they believe she will make it through the night again.