亲属活体供肾动脉轻度狭窄对肾移植受者术后早期肾功能和并发症的影响

目的探讨亲属活体供肾动脉轻度狭窄对肾移植受者术后早期肾功能和并发症的影响。方法回顾性分析14例供肾动脉轻度狭窄的亲属活体肾移植与50例标准亲属活体肾移植供、受者的临床资料。比较两组供者术后血清肌酐(Scr)水平。比较两组受者术后1、3、6个月的Scr水平;比较两组受者移植肾存活率及移植物功能延迟恢复(DGF)、急性排斥反应、肺部感染的发生率。结果两组供者术后Scr水平比较,差异均无统计学意义(均为P0.05)。两组术后1、3、6个月Scr水平比较,差异均无统计学意义(均为P0.05)。两组受者移植肾存活率,DGF、急性排斥反应、肺部感染的发生率比较,差异亦均无统计学意义(均为P0.05)。结论亲属活体供肾动脉轻度狭窄对肾移植受者术后肾功能和并发症的影响不大,可纳入标准供体供肾范围。     

成人移植婴幼儿供肾术后移植肾动脉狭窄

目的探讨成人受者接受小儿供肾移植术后发生的移植肾动脉狭窄临床特点、病因、诊断及治疗。方法回顾性分析2014年7月至2019年3月在华中科技大学同济医学院附属协和医院泌尿外科进行的25例小儿供者整块双肾移植和27例小儿供者单肾移植的临床资料(受者均≥18岁)。结果其中1例双肾移植成人受者(4.0%)和2例单肾移植受者(7.4%)在移植术后13～23个月诊断为移植肾动脉狭窄, 高于同期接受成人供肾的成人受者移植肾动脉狭窄率(1.1%)。移植肾动脉狭窄成人受者与非狭窄组比较, 其供者年龄更小(P<0.05), 但是供者、受者体重差异均无统计学意义(P>0.05)。狭窄部位内径1.40～1.63 mm, 均为移植肾动脉自供者腹主动脉起始部而非吻合口本身。肾动脉非狭窄段内径2.31～4.93 mm, 与相应年龄小儿正常肾动脉一致。3例移植肾动脉狭窄受者行经皮腔内血管成形及支架置入术后均得到有效治疗。结论移植肾动脉狭窄的原因可能与过度剥离肾动脉周围组织, 影响其术后继续发育相关。谨慎选择成人受者接受婴儿单供肾, 保留肾动脉周围组织可能有助于预防移植肾动脉狭窄。     

婴幼儿供肾成人双肾移植42例

目的回顾性分析单中心婴幼儿供肾成人双肾移植临床疗效,探讨供、受者选择及不同手术方式的效果差异。方法回顾性总结2012年12月至2019年5月中南大学湘雅二医院实施的婴幼儿供肾成人双肾移植42例,根据供肾是否满足三"5"标准(供者年龄>5个月、供者体重>5 kg、供肾长径>5 cm)分为两组,两组受者再根据采用不同的手术方式分为术式A亚组(经典En-bloc术式)、术式B亚组(分离式双肾移植)、术式C亚组(改良术式)。分析其临床资料及预后。结果经中位随访时间56个月(11~92个月)。供肾满足三"5"标准组受者均未发生栓塞事件;末次随访估算肾小球滤过率:术式A为123.4 ml/min(92.2~156.6 ml/min)、术式B为97.2 ml/min(81.3~116.6 ml/min)、术式C为133.9 ml/min(133.9~133.9 ml/min);供肾不满足三"5"标准的受者中,术式A和术式C受者均未发生栓塞事件(0%),术式B中3例受者发生移植物栓塞(2例单肾栓塞、1例双肾栓塞)(3/5,60%),显著高于术式A、C组(P<0.05);末次随访尿蛋白(+):术式A 1例(1/2,50%)、术式B 3例(3/5,60%),术式C 0例,术式C受者尿蛋白阳性率显著低于术式A、B(P<0.05);末次随访估算肾小球滤过率:术式A为82.4 ml/min(80.9~83.9 ml/min)、术式B为71.8 ml/min(46.1~114.2 ml/min)、术式C为122 ml/min(83.3~142.4 ml/min)。满足三"5"标准供者组和不满足三"5"标准供者组的受者1年移植肾存活率分别为100%和89.5%;3年移植肾存活率分别为100%和84.2%。结论婴幼儿供肾可以加以利用,满足三"5"标准的供肾对术式的要求不高,预后较好;不满足三"5"标准的极低龄、极低体重供者的供肾,采用利用主动脉远端建立流出道的改良术式似可降低栓塞的发生率、改善近期预后,并减轻移植物高灌注损伤、改善远期预后。     

儿童DCD供肾成人单肾移植与标准DCD供肾移植临床疗效比较研究

目的比较儿童DCD供肾成人单肾移植与标准DCD供肾移植(成人供肾成人单肾移植)的临床疗效。方法回顾性分析本院2011年11月至2014年4月完成的97例DCD供肾移植供受者的临床资料。根据供者年龄将其分为儿童DCD供肾成人单肾移植组(SPKT组,3岁年龄18岁,20例)和标准DCD供肾移植组(SCDKT组,年龄≥18岁,73例),比较两组供受者一般情况、受者术后不同时间点血肌酐水平、各种并发症的发生率及移植肾和人的1年存活率。结果 SPKT组供者年龄、体重、移植肾长度显著小于SCDKT组,差异具有统计学意义(P0.01);SPKT组受者术后1年内蛋白尿发生率显著高于SCDKT组(P0.01);两组受者移植肾和人的1年存活率比较无统计学差异(P0.05);供受者其它指标比较均无统计学差异(P0.05)。结论与标准DCD供肾移植相比,尽管蛋白尿发生率较高,但儿童DCD供肾成人单肾移植近期临床效果良好,远期效果有待进一步研究。     

儿童供肾给儿童肾移植术后肾动脉狭窄5例

目的分析儿童供肾给儿童肾移植术后移植肾动脉狭窄的临床特点, 探讨其发生发展的可能影响因素。方法回顾性总结华中科技大学同济医学院附属同济医院2014年5月1日至2021年6月30日期间89例儿童供肾给儿童肾移植受者随访过程中发生移植肾动脉狭窄的临床资料, 中位随访29个月内共发生移植肾动脉狭窄5例(5.6%)。5例儿童供者、受者的中位年龄分别为9个月和11岁, 2例为双供肾移植, 3例为单供肾移植, 肾动脉均采用端侧吻合。诊断移植肾动脉狭窄的中位时间为术后10个月(3～60个月), 除1例3岁受者发生时间较早外, 余4例均发生在儿童受者肾移植后的快速生长期, 身高最大增幅为30 cm。5例中3例有移植部位的再次手术史, 包括同侧再次肾移植手术1例和移植肾尿路重建术2例。5例儿童受者均表现为高血压、2例伴血肌酐升高。4例彩色多普勒超声检测移植肾动脉流速>300 cm/s, 5例CT血管造影或磁共振血管造影均示移植肾动脉狭窄, 程度50%～95%。结果 4例行球囊扩张后2例显著缓解, 1例复发后经支架置入好转, 1例效果不明显而最终移植肾功能丧失。1例观察6个月后狭窄自行部分缓解而暂未...     

小鼠移植肾再次移植动物模型的建立

目的探讨小鼠移植肾再次移植动物模型建立方法。方法将首次移植供体小鼠左侧供肾肾静脉(RV)同首次移植受体小鼠肾下下腔静脉(IVC)端侧连续吻合,首次移植供体小鼠左侧供肾肾动脉(RA)连带小段首次移植供体小鼠腹主动脉(AO)同首次移植受体小鼠AO端侧间断吻合,首次移植供体小鼠左侧供肾输尿管拖入并固定在首次移植受体小鼠膀胱顶后壁完成小鼠首次肾移植术。首次移植术后2~4周,将首次移植受体小鼠体内移植肾脏RV连带部分首次移植受体IVC同移植肾再次移植受体小鼠IVC端侧连续吻合,移植肾脏RA连带小段首次移植供体和受体小鼠AO同移植肾脏再次移植受体小鼠AO端侧间断吻合,将再次移植肾输尿管拖入并固定在再次移植受体小鼠膀胱顶后壁完成小鼠移植肾再次肾移植术。首次移植和移植肾再次移植术中均切除受体双侧自体肾脏。记录手术时间,随访移植肾再次移植受体存活,监测再次移植肾功能和病理。结果移植肾再次移植供体手术时间为(50±10)min,受体手术时间为(55±5)min。共完成8例小鼠移植肾再次移植术。2例同系,6例非同系。第1例尝试性非同系移植肾再次移植受体存活11 d。后续5例非同系移植肾再次移植受体中1例存活21 d,其余4例均存活到术后70 d获取标本。2例同系移植肾再次移植受体均存活到术后30 d获取标本。8例移植肾再次移植受体在获取标本时或非预期死亡前血清肌酐均<0.2 mg/dl。苏木精-伊红(HE)染色提示同系移植肾再次移植术后30 d移植肾未见病理性改变。结论本文描述了建立小鼠移植肾再次移植动物模型的方法,为开展移植免疫相关研究提供了新手段。     

体重<15kg儿童DCD单侧供肾用于成人肾移植的临床观察

目的评估体重15kg的儿童DCD(公民逝世后器官捐献,包括脑死亡捐献和心脏死亡捐献)供者单侧供肾用于成人肾移植的早期安全性及临床效果。方法回顾分析本院2013年2月至2015年2月间行体重15kg的儿童供肾成人肾移植18例(儿童供肾组),与同期成人供肾成人肾移植62例(成人供肾组)的临床资料,分析两组患者术后并发症;1个月、3个月、6个月及1年移植肾eGFR;术后6个月及1年人、移植肾存活率;儿童供肾组术后移植肾长径、eGFR的变化情况,蛋白尿、血尿发生情况。结果儿童供肾组DGF、AR、血管及泌尿系并发症发生率分别为22.22%、5.56%、5.56%和5.56%,成人供肾组为20.03%、3.26%、0%和0%(P均0.05);所有受者观察期间均未死亡,术后1个月儿童供肾组eGFR明显低于成人供肾组(P0.05),术后3个月、6个月及1年,两组eGFR无差异(P0.05)。儿童供肾组术后6个月及1年移植物存活率分别为93.80%和93.80%,而成人供肾组为98.20%和98.20%(P0.05);儿童供肾组移植肾eGFR、长径与术后时间呈正相关增长,观察期内儿童供肾组蛋白尿发生率与成人组相当,血尿发生率高于成人组。结论本组体重15kg的儿童DCD单侧供肾成人肾移植术后并发症、功能(依据eGFR评价)与成人组相当,供肾长径及移植肾eGFR在术后3~6个月可增至成人水平,低体重儿童单侧供肾成人肾移植手术并发症率低,近期效果满意,远期效果有待进一步观察。     

活体供肾术前评估中16层螺旋CT的价值

目的：评价16层螺旋CT三维重建在活体供肾血管、肾实质、泌尿系统评估中的实际应用价值.方法：回顾2004年以来41例活体肾移植供体临床资料,术前均行16层螺旋CT扫描,采集肾动脉期、静脉期以及排泄期的影像数据,采用MIP、VR、MPR和CRP等三维图像后处理技术,评估供体肾动脉、肾静脉、泌尿集合系统和肾实质情况,与术中所见相对照.结果：41例供肾动脉显示,34例双肾单支动脉供血,其中2例左肾动脉、3例右肾动脉分支较早;4例右肾见一支副肾动脉,3例左肾见一支副肾动脉;术中证实有1例右副肾动脉,1例左肾动脉早期分支未能在影像中显示清楚,准确率95.1%.41例供肾静脉显示,37例双肾静脉为单支,4例右侧双支肾静脉;术中证实5例右侧双支肾静脉未能在影像中显示,准确率87.8%;泌尿集合系统显影满意,1例左侧双肾盂双输尿管畸形.结论：16层螺旋CT三维重建能准确显示供体肾脏血管、泌尿集合系统、肾实质解剖及可能的病理情况,给临床肾移植术前评估提供有价值的帮助,可作为供体术前检查的首选方法.     

供体年龄对活体肾移植预后的影响

目的 探讨供体年龄对活体肾移植预后的影响.方法 回顾性分析2004年至2011年间在我院实施的活体亲属肾移植217例,按供体年龄或供受体年龄差异分组,随访并比较各组受者的血肌酐水平和术后并发症情况.结果 随着供体年龄的增长,受体移植术后血肌酐水平呈上升趋势.与供受体年龄差＜-5岁组比较,供体年龄差＞5岁组的Scr水平在1个月[(143.5±42.1) μmol/L比(114.4±30.4)μ mol/L]、3个月[(139.9±36.6) μmol/L比(110.6 ±33.3)μmol/L]、1年[(132.1±22.1)μmol/L比(105.5±35.9) μmol/L]及2年(132.0±45.4) μmol/L比(97.2±17.5) μmol/L]均增高,差异有统计学意义(均P＜0.05).与年轻供肾组(＜50岁)相比,老年供肾组(＞50岁)的急性排斥反应发生率(19.4％比9.7％)和慢性排斥反应发生率(9.7％比1.4％)也显著增高(均P＜ 0.05).术后人及肾的存活率比较差异无统计学意义.供受体年龄差异是术后2年Scr水平异常的独立危险因素(OR=5.010,P＜0.05).结论 供体年龄是肾移植预后的重要影响因素,老年供肾的疗效较差.     

肾移植血管吻合技巧

血管吻合技术的好坏直接关系到肾移植手术的成败。提高血管吻合手术技巧的目的,也在于避免肾移植术后常见血管并发症如移植肾血管梗阻、栓塞,移植肾动脉破裂出血,吻合口破裂出血,移植肾动脉瘤,移植肾动脉狭窄等[1]。一、肾移植静脉吻合技巧供肾静脉常与受体髂外静脉端侧吻合,髂外静脉有血栓形成或儿童肾移植患者供肾静脉常与下腔静脉端侧吻合。在静脉吻合之前,须摆好供肾与吻合血管之间的关系,切勿让供肾静脉扭曲。为防止静脉吻合口狭窄,受者静脉切口要足够大,与供肾静脉口径相匹配为原则。左肾静脉一般长度足够,不需延长。右肾静脉相对较短…     

Experience with dual kidney transplants from donors at the extremes of age

BACKGROUND: Dual kidney transplantation (DKT) from donors at the extremes of age represents one approach to expanding the organ donor pool. The purpose of this study was to review our experience with DKT from older donors and en bloc KT (EBKT) from small pediatric donors. METHODS: Deceased donor KTs performed at our center between October 2001 and November 2005, were reviewed retrospectively. If the calculated creatinine clearance in an expanded criteria donor was <65 mL/min, then the kidneys were transplanted dually into a single adult recipient. If a pediatric donor weighed <15 kg, then the kidneys were transplanted en bloc. In both instances, low-risk recipients were chosen (primary transplant, low sensitization, body mass index <25 kg/m(2), human leukocyte antigen matching). Donor, recipient, and transplant characteristics, waiting time, and outcomes were examined. RESULTS: Of a total of 279 deceased donor KTs during the 49-month study period, 15 (5%) recipients underwent DKT and 5 (2%) underwent EBKT. Mean donor age was 65.4 years and 21.4 months in the DKT and EBKT groups, respectively. Patient survival rates in both groups were 100% with a mean follow-up of 22 months (minimum, 6 months). Kidney graft survival rates were 80% (12/15) and 60% (3/5) in the DKT and EBKT groups, respectively. The combined incidence of delayed graft function was 10%. Mean 12-month glomerular filtration rates were 46 mL/min and 66 mL/min in the DKT and EBKT groups, respectively. CONCLUSIONS: DKT using kidneys from marginal elderly donors and EBKT from small pediatric donors appear to offer a viable option to counteract the shortage of acceptable kidney donors.     

Estado actual del trasplante renal en bloque de donante pediátrico en receptor adulto joven

Context and objectivesIn recent years, despite the increased number of kidney transplants performed in Spain, we observed a gradual increase in waiting lists. The need to increase the number of transplants performed in our centers, forces us to accept as donors, pacients previously rejected.Acquiring of evidenceWe performed a systematic review using PubMed of published articles in the last 10 years, that include the words trasplante renal en bloque, «en bloc kidney transplantation» or its initials EBKT.Synthesis of evidenceThe pediatric donor to adult recipient has been included in the expanded criteria donors group, being rejected nevethless such donors in most centers. However, in recent published series comparing the en bloc kindey transplantation from pediatric donor to adult recipients with other transplantated groups, the authors observe similar results between this kind of transplantation and the «optimal» donor group or living kidney donor group, regarding renal function and graft survival, and better results than the transplantated kidneys with expanded criteria donors group.ConclusionsThe results published in the current series lead us to consider this kind of transplant as an option to increase the number of transplants performed.     

One-year follow-up of en bloc renal transplants from pediatric donors in adult recipients

Objectives

The optimal use of kidneys from small pediatric cadaveric donors remains controversial. The aim of this study was to analyze short-term graft and patient survivals of en bloc kidney transplantations compared with single cadaveric adult donor kidney transplantations.

Patients and methods

We compared the 1-year evolution of 14 adult recipients of en bloc pediatric kidney donors (EBKT) of median age 13.5 ± 14.5 months (range = 3 days to 48 months) with 182 recipients of ideal adult cadaveric donors (ADT) showing a median age of 30 ± 21 years (range = 14-45 years).

Results

Besides the different age and weight of the donors, EBKT recipients were more commonly women (P = .05) and received thymoglobulin induction treatment (P = .00). Delayed graft function was higher in EBKT (46.2% vs 22.2%, P = .05), with no differences in the incidences of acute rejection episodes. Mean serum creatinine values at 3, 6, and 12 months after transplantation were 1.1 ± 0.3, 1.1 ± 0.2, and 1.0 ± 0.2 mg/dL in the EBKT group, compared with 1.3 ± 0.5 (P = .16), 1.3 ± 0.5 (P = .02), and 1.3 ± 0.6 (P < .01) in the ADT group. Vascular allograft complications were more frequent among EBKT. Graft survival rate at 1 year was 92% in both groups, with no differences in patient survival (100% in EBKT vs 92% in ADT; P = .49).

Conclusions

EBKT from small pediatric donors show excellent graft function and 1-year survival and should be considered for transplantation into adults.     

38例小儿双供肾成人肾移植临床疗效分析

目的总结小儿双供肾移植临床应用数据和经验,探讨改善其移植术后疗效的措施。方法回顾性分析2014年9月至2019年11月华中科技大学同济医学院附属协和医院38例小儿双供肾移植资料,小儿供者年龄(63.6±5.7)d,体重(4.1±0.2)kg,受者年龄(28.1±1.4)岁,体重(48.7±4.9)kg。收集供、受者基本情况与术前检查结果,采集受者术前和术后7、30 d及3、6、12个月的血肌酐水平,记录肾移植术后血栓、尿漏、移植肾功能延迟性恢复、蛋白尿、移植肾周血肿等并发症的发生情况与治疗预后。结果术后1年移植物存活率为76.3%(29/38),移植受者存活率100%(38/38),移植物长期存活的29例受者中,手术2周后均无须透析辅助治疗,术后1年血肌酐水平均降至正常。血栓是最主要的术后并发症。肾动、静脉血栓形成导致肾功能丧失发生率18.4%(7/38),余并发症还包括尿漏20.7%(6/29)、移植肾周血肿6.9%(2/29)、原发性移植肾无功能2.6%(1/38)等。结论小儿供肾作为扩大供肾来源的有效方式,临床应用是可行的。     

Graft Arterial Stenosis in Kidney En Bloc Grafts From Very Small Pediatric Donors: Incidence,Timing, and Role of Ultrasound in Screening

In previous studies with different donor selection criteria and noncontemporary surgical techniques, graft arterial stenosis (GAS) has been reported to occur more frequently in adult recipients of pediatric en bloc renal allografts (EBKT) as compared to single adult donor allografts. The purpose of our study was to evaluate the incidence of GAS within our EBKT recipient population and to evaluate clinical and imaging features of those cases with GAS. In a retrospective cohort study, we analyzed 182 EBKT performed at a single institution. We identified cases of suspected GAS based on clinical factors, lab results, and noninvasive imaging. Diagnosis of GAS was confirmed by digital subtraction angiography. Two EBKT recipients (1.1% of 182) had angiographically confirmed GAS at 2.5 and 4.5 months after transplant. In both cases, the stenoses were short segment within the proximal (perianastomotic) donor aorta, color Doppler ultrasound demonstrated peak systolic velocities of >400 cm/s, and poststenotic parvus tardus waveforms were present. Both patients underwent angioplasty and demonstrated postintervention improvement in renal function and blood pressure. Restenosis did not occur during follow up. In conclusion, recipients of EBKT have a low incidence of GAS, similar to the lowest reported for adult single allografts.     

Higher Incidence of Renal Allograft Glomerulonephritis in Living-Related Donor Kidney Transplantation

Glomerulonephritis recurrence has emerged as one of the leading causes of allograft loss. We aimed to investigate the effect of living-related and deceased donation on the incidence of renal allograft glomerulonephritis and its effect on renal allograft survival.

Laparoscopic live donor nephrectomy: Current practice and results of renal transplantation

Objective: In 2009, 1659 patients with end‐stage renal failure in Hong Kong were waiting for a renal transplant. The overall number of renal transplants carried out locally remains low, with an even lower number being live donor donations. Yet, live donor kidney transplantation yields results that are consistently superior to those of deceased donor kidney transplantation, and laparoscopic donor nephrectomy (LDN) is increasingly accepted worldwide as a safe and preferred surgical option. We aim to evaluate the outcome of LDN in our setting, and to compare with that of deceased donors in this retrospective review. Patients and Methods: A total of 12 patients received LDN over the study period of 2006–2009. Standard left transperitoneal LDN was carried out. Grafts including three with double vessels were prepared using the bench technique. The postoperative outcomes up to 1 year for both the donors and the recipients were studied. Contemporary results for the 47 deceased donor kidneys were studied and compared. Results: All donors had an eventful recovery. The operating time was 225.0 ± 67.4 min. The hospital stay was 5.6 ± 2.3 days. The recipient outcomes including hospital stay and creatinine levels at discharge and 1 year were 11 days, 121 umol/L and 116 umol/L, respectively. Specifically, no ureteric stricture or graft loss was noted at the 1‐year follow up. Recipient complications included haematoma (1 patient), renal artery stenosis (1 patient) and redo of vascular anastomosis (1 patient). In contrast, the deceased donor graft recipients had a hospital stay of 11 days, and creatinine levels of 205 umol/L on discharge and 205 umol/L at 1 year, respectively. The delayed graft function rates for the live donor and deceased donors group were 0% and 14.9%, whereas the 1‐year graft survival rates were 100% and 87.2% respectively. Conclusion: The results showed that the donor morbidity rate was low, as reflected by the short hospital stay. Also, the overall parameters of recipients were good. In particular, no ureteric stricture was noted, and graft survival was 100% at 1 year. Living donor kidney transplant program using the laparoscopic technique is a viable option to improve the pool of kidneys for transplantation.     

Kidney transplantation from living related donors with multiple vessels. A problem revisited

Thirty-one renal transplantations were performed using kidneys from living donors with known bilateral double renal arteries. In twenty-one patients both vessels were anastomosed but in ten patients a tiny polar vessel was sacrificed resulting in a small infarct in the grafted kidney. Results of transplantation in these patients were compared with those in recipients of related and cadaver kidneys matched for time of transplant, sex, and age of recipient. There is an increased incidence of acute tubular necrosis in recipients of transplants from living donors with double renal arteries. By several weeks after transplantation, however, renal function is identical to that in recipients of related donor organs with single arteries. Hypertension that is more common in patients with double renal arterial anastomoses is relatively easy to control with increased antihypertensive medications. Two patients had loss of the kidney transplants because of stenosis of one or both renal arterial anastomoses. Despite these losses, the results of renal transplantation from living related donors with double renal arteries are almost as successful as those from a related donor with single renal arteries.In contrast, recipients of kidneys with polar infarcts appear to undergo more episodes of rejection, infection, or both, than do recipients of related transplants with single renal arteries. In one patient with a polar infarct, delayed total ureteral necrosis developed.Living related donors with bilateral double renal arteries should be accepted as donors in preference to cadaver donors if both vessels can easily be anastomosed. If, however, a polar vessel must be sacrificed, it is suggested that a cadaver donor be utilized in preference to a related donor.     

Transplantation of single and paired pediatric kidneys into adult recipients

Background:The transplantation of kidneys from cadaveric donors ≤ 5 years of age into adult recipients is controversial. The large disparity between donor renal mass and recipient body mass is feared to be problematic. Controversy also exists whether to transplant kidneys from these young donors individually or as a pair into a single recipient.Study Design:We retrospectively reviewed our experience from January 1991 to January 1995 with 22 adulrenal transplantations using kidneys from cadaveric donors ≤ 5 years of age. Ten patients received single allografts. Twelve received organs paired en bloc. Fiftytwo adult recipients from cadaveric donors aged 18–55 years served as controls. All patients received cyclosporine-based immunosuppression. Recipient characteristics did not differ significantly between the groups.Results:Actuarial patient and graft survival rates were similar for the two groups. The incidence of urinary complications was higher in the recipients of pediatric kidneys than in the adult-donor group (18.2% versus 3.8%, respectively, p = not significant). No grafts were lost from urinary complications. Renal function, as determined by the calculated creatinine clearance, was significantly greater in the pediatric group (76.1 ± 4.0 versus 61.4 ± 23.2 mL/min, p = 0.035) by 6 months after transplantation. Recipients of paired pediatric kidneys initially had better renal function (63.9 ± 21.4 mL/min) than those receiving single pediatric kidneys (38.2 ± 11.6 mL/min) (p = 0.004), but by 6 months, no significant difference existed. At 2 years, renal function in the pediatric-donor group remained significantly better than in the adult-donor group. Hematocrit levels as a measure of erythropoiesis were similar for single pediatric, paired pediatric, and adult-donor recipients.Conclusions:Kidneys from cadaveric donors ≤ 5 years of age are suitable for transplantation into adults. Pediatric kidneys provide excellent renal function despite an initially tremendous disparity between renal mass and recipient body mass. Rapid true renal growth probably occurs. No appreciable advantage is achieved by using two pediatric kidneys for a single recipient.     

Outcomes of En Bloc Kidney Transplantation From Pediatric Donors: A Single-Center Experience

Background

To overcome a shortage of donors, cadaveric pediatric en bloc kidneys can be used to expand the donor pool. Recent evidence shows that en bloc kidney transplantation (EBKT) has better outcomes than standard-criteria deceased adult donor kidney transplantation. We reviewed our experiences of EBKT and their outcomes.