MY HUSBAND DIED FROM MANY CONPLICATIONS, AND I AM TRYING TO GET CLOSURE. ACUTE KIDNEY FAILURE, WHICH HAPPENED FAST. THERE ARE MANY QUESTIONS THAT I HAVE. SOME ARE CHRONIC RESPIRTORY ACIDOSIS, MILD HYPERKALEMIA, LEFT PLEURAL EFFUSION, AND HYPOCALCEMIA. I THOUGHT HE DIED FROM BLADDER CANCER AND SPREAD TO HIS KIDNEYS.