Saxena Ramesh, Yu Xueqing, Giraldo Mauricio, Arenas Juan, Vazquez Miguel, Lu Christopher Y, Vaziri Nosratola D, Silva Fred G, Zhou Xin J
Division of Nephrology, Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX, USA.
Int Urol Nephrol. 2009;41(1):195-210. doi: 10.1007/s11255-008-9489-6. Epub 2008 Nov 7.
Elderly patients are increasingly being considered for kidney transplantation due to a global explosion of the aging population with end-stage renal disease (ESRD). However, mounting scarcity of available organs for transplant has led to a wider disparity between organ supply and demand. Consequently, the criteria for accepting kidneys for transplantation have been extended in an attempt to allow the use of organs from elderly donors or those with significant co-morbidities, so-called "expanded criteria donor" (ECD) kidneys. Excellent outcomes have been achieved from ECD kidneys with appropriate donor and recipient profiling and selection. With increasing recovery efforts directed at older donors, the concept of age-matching is becoming more accepted as a method of optimizing utilization of organs in elderly donors and recipients. Utilization of pulsatile perfusion has further improved ECD outcomes and helped the decision-making process for the UNOS (United Network for Organ Sharing) offer. However, age-related immune dysfunction and associated co-morbidities make the elderly transplant recipients ever more susceptible to complications associated with immunosuppressive agents. Consequently, the elderly population is at a higher risk to develop infections and malignancy in the post-transplant period notwithstanding improved transplant outcomes. Appropriate immunosuppressive agents and dosages should be selected to minimize adverse events while reducing the risk of acute rejections and maximizing patient and renal allograft survival.
由于患有终末期肾病(ESRD)的老年人口在全球范围内激增,越来越多的老年患者被纳入肾移植的考虑范围。然而,可用移植器官的日益稀缺导致了器官供需之间的差距越来越大。因此,为了能够使用来自老年供体或患有严重合并症的供体的器官,即所谓的“扩展标准供体”(ECD)肾脏,接受移植肾脏的标准已经放宽。通过对供体和受体进行适当的评估和选择,ECD肾脏已经取得了出色的效果。随着针对老年供体的恢复工作不断增加,年龄匹配的概念作为一种优化老年供体和受体器官利用的方法越来越被人们所接受。搏动灌注的应用进一步改善了ECD的效果,并有助于器官共享联合网络(UNOS)做出提供器官的决策。然而,与年龄相关的免疫功能障碍和相关合并症使老年移植受者更容易受到与免疫抑制剂相关的并发症的影响。因此,尽管移植效果有所改善,但老年人群在移植后发生感染和恶性肿瘤的风险更高。应选择合适的免疫抑制剂及其剂量,以尽量减少不良事件,同时降低急性排斥反应的风险,并最大限度地提高患者和肾移植受者的生存率。