WASHINGTON - Dr. Angelo Volandes remembers performing rib-cracking CPR on a frail elderly man dying of lung cancer, a vivid example of an end-of-life dilemma: Because his patient never said if he wanted aggressive care as his body shut down, the hospital had to try. He died days later. Years later, the Harvard Medical School researcher now tries to spur conversations about what care patients want during life's final chapter through videos that illustrate different options.