Department of Anesthesiology,Peking Union Medical College Hospital, Beijing 100730, China;
Department of Anesthesiology,Peking Union Medical College Hospital, Beijing 100730, China;
Department of Anesthesiology,Peking Union Medical College Hospital, Beijing 100730, China;
Department of Anesthesiology,Peking Union Medical College Hospital, Beijing 100730, China;
Department of Anesthesiology,Peking Union Medical College Hospital, Beijing 100730, China;
Department of Anesthesiology,Peking Union Medical College Hospital, Beijing 100730, China;
remifentanil; fentanyl; anesthesia; radical mastectomy; total hyscrectomy;