David was a car accident victim taken to the emergency room. The emergency room physician observed a seatbelt abrasion stretching from David's shoulder to his upper abdomen. But despite this telling symptom, the physician failed to order an ultrasound or CT scan of David's abdomen. Instead, she sent David home with pain medications, where he died the next morning after suffering severe internal bleeding from a liver rupture. Even if they had known that his liver was lacerated, doctors might still have been unable to save David's life.