How To Treat Stage 5 Kidney Failure And Diagnosed With COPD And Liver Cirrhosis?

Hi, My dad has stage five kidney failure. He has cirrhosis of the liver and copd. Last wednesday he had a stroke, while in the hospital 6 liters of fluid was removed from his stomach. Now his kidneys are stage five failure. The Dr is trying to restart his kidneys with meds, it has been one week now with no improvement. How much longer can he live?