Such Sweet Sorrow

Carol resuscitates a terminal cancer DNR to say goodbye to her family, and realizes that life is too short. She runs out of the hospital after saying a quick goodbye to Luka and Mark and hops on a plane to Seattle to see Doug. Carter's mental status is dissipating rapidly to the point where he almost kills a woman. Chen notices and tells Mark her concern that Carter is bipolar. Weaver goes on the warpath after noticing ER staff taking shortcuts in their work, including Abby, who discharges a woman prematurely without running extra tests. Corday offers Malucci a sobering assessment of his performance. Mark prepares to bury his father and enjoys his daughter's company.