在美国的医院,心肺复苏是一种默认选项,即必须由患者提出不再尝试复苏的请求后才能不进行心肺复苏。如面对一个有心跳骤停风险的患者,标准的做法是询问患者或其代理人对心肺复苏的倾向。但询问这一行为就会使患者和家属认为,复苏可能是有益的。此外,从认知心理学的角度患者通常会把默认 In U.S. hospitals, cardiopulmonary resuscitation is a default option, and cardiopulmonary resuscitation can not be performed until a request is made by the patient to stop resuscitation. In the face of a patient at risk of arrest, the standard practice is to ask the patient or his agent about the propensity for cardiopulmonary resuscitation. However, asking this behavior will make patients and their families think recovery may be beneficial. In addition, patients often default to cognitive psychology