In 2003 Tawnya Brown was awaiting bowel surgery in a Northern Virginia hospital when she decided to switch beds to be closer to the window. The move ultimately killed her. During surgery, Brown mistakenly received two pints of A-negative blood. She was O-positive. An investigation revealed that a technician had drawn blood from the wrong patient. Within minutes of the procedure, the 31-year-old suffered a fatal hemolytic reaction, which resulted in plunging blood pressure and kidney failure.