当患者完全的丧失了在临终时做重要决定的能力时,医生们往往可以询问患者预先指定的被授权人来知晓患者的选择,并且代表患者作出决定。目前的研究调查主要是被授权人在表达患者的决定时,是否代表的就是被授权人自己的意愿。通过使用来源于危重患者和他们的被授权人的数据资料, When a patient has completely lost the ability to make critical decisions at the time of their dying, doctors often can ask the patient's pre-designated authorized person to know the patient's choice and to make a decision on behalf of the patient. The current study is mainly about whether the authorized person's decision to express the patient represents the will of the authorized person. By using data from critically ill patients and their authorized persons,