My dad had alzheimers but was healthy we brought him to the er and he was found to have a urinary infection anyways he seemed fine no biggie. He was admitted and tests were done alike colonoscopy I don't know why and was not allowed to eat through his mouth. He had a feeding to placed surgically and was given ensure. He ate well at home with no problem. Three weeks later his kidneys start to fail and we dcided to go ahead wirh a dnr and so on the 3rd day he passed. Is it possible to suddenly have kidney failure after being healthy only after being in the hosp. Problems arose??????