Heide W
Neurologische Klinik, Allgemeines Krankenhaus Celle, Siemensplatz 4, 29223, Celle, Deutschland.
Nervenarzt. 2016 Feb;87(2):161-8. doi: 10.1007/s00115-015-0048-y.
The death of the donor is a mandatory prerequisite for organ transplantation (dead donor rule) worldwide. It is a medical, legal and ethical consensus to accept the concept of brain death, as first proposed in 1968 by the ad hoc committee of the Harvard Medical School, as a certain criterion of death. In isolated cases where the diagnosis of brain death was claimed to be wrong, it could be demonstrated that the diagnostic procedure for brain death had not been correctly performed. In March 2014 a joint statement by the German neuromedical societies emphasized that 1) the diagnosis of brain death is one of the safest diagnoses in medicine if performed according to accepted medical standards and criteria and 2) the concept of non-heart-beating donors (NHBD, i. e. organ donation after an arbitrarily defined duration of circulatory and cardiac arrest) practiced in some European countries must be absolutely rejected because it implicates a high risk of diagnostic error. According to the current literature it is unclear at what time cardiac and circulatory arrest is irreversible and leads to irreversible cessation of all functions of the entire brain including the brainstem, even though clinical signs of cessation of brain functions are always found after 10 min. Furthermore, is it often an arbitrary decision to exactly define the duration of cardiac arrest if continuous echocardiographic monitoring has not been carried out from the very beginning. Last but not least there are ethical concerns against the concept of NHBD because it might influence therapeutic efforts to resuscitate a patient with cardiac arrest. Therefore, the German Medical Council (BÄK) has repeatedly rejected the concept of NHBD for organ transplantation since 1995.
在全球范围内,捐赠者死亡是器官移植的强制性前提条件(死亡捐赠者规则)。接受脑死亡概念作为一种确定的死亡标准是医学、法律和伦理上的共识,该概念最早由哈佛医学院特设委员会于1968年提出。在个别声称脑死亡诊断错误的案例中,可以证明脑死亡的诊断程序未正确执行。2014年3月,德国神经医学协会发表联合声明强调:1)如果按照公认的医学标准和准则进行诊断,脑死亡诊断是医学上最可靠的诊断之一;2)必须绝对摒弃一些欧洲国家实行的非心脏跳动捐赠者(NHBD,即任意定义循环和心脏骤停持续时间后的器官捐赠)概念,因为这意味着存在很高的诊断错误风险。根据当前文献,目前尚不清楚心脏和循环骤停在何时变得不可逆转并导致包括脑干在内的整个大脑的所有功能不可逆转地停止,尽管在10分钟后总能发现脑功能停止的临床迹象。此外,如果从一开始就没有进行连续的超声心动图监测,精确界定心脏骤停的持续时间往往是一个随意的决定。最后但同样重要的是,存在针对非心脏跳动捐赠者概念的伦理担忧,因为它可能会影响对心脏骤停患者进行复苏的治疗努力。因此,自1995年以来,德国医学委员会(BÄK)多次拒绝将非心脏跳动捐赠者概念用于器官移植。