活体肾移植供肾肾小球滤过率对术后移植肾功能恢复的影响

目的探讨活体肾移植供肾肾小球滤过率(GFR)对术后移植肾功能恢复的影响。方法回顾性分析2009年至2013年在昆明医科大学第一附属医院器官移植中心接受活体供肾移植的108对供受者的临床资料。按供肾GFR数值大小将研究对象分为G1组(GFR40 ml/min)、G2组(GFR 40~45 ml/min)、G3组(GFR 46~50 ml/min)及G4组(GFR50 ml/min)。比较各组受者术后1周、2周、3周、1个月、3个月、6个月及1年的血清肌酐(Scr)的变化情况,以及术后1年的人及肾存活情况。结果与G1组比较,G2、G3、G4组术后2周、3周、1个月的Scr值较低,差异有统计学意义(均为P0.05)。术后1年内人、肾存活情况,G1组超急性排斥反应致移植肾失功1例、重症肺部感染死亡1例;G2组因急性排斥反应导致移植肾失功1例;G3组死于重症肺部感染者1例;G4组1例死于重症肺部感染;其余患者在随访期间人、肾均存活。结论活体肾移植供肾GFR值低对术后移植肾早期(1个月内)肾功能恢复有一定影响。     

老年活体亲属供肾移植的安全性分析

目的 探讨老年活体亲属供肾移植供体、受体的围手术期并发症、疗效及安全性.方法 亲属活体供肾移植132例,分为老年供体组(≥55岁,43例)和中青年供体组(＜55岁,89例);对供受体的住院时间、手术前后血肌酐(SCr)、内生肌酐清除率(CCr)、肾小球滤过率(GFR)、并发症以及受体的急性排斥反应率、人/肾存活率等进行比较分析.结果 2组供者术前SCr分别为(77.67±15.21)、(83.09±15.98)μmol/L,术后7 d分别为(109.54±22.32)、(106.56±23.46)μmol/L,均在正常范围内,2组间各时间点比较差异均无统计学意义(P值均＞0.05).术后3个月2组供者SCr分别为(112.57±20.87)、(104.29±19.43)μmol/L,与术前比较分别上升44.93%和25.51%,老年供体组比中青年供体组供者scr升高更明显.差异有统计学意义(P=0.0268).2组术前CCr分别为(1.63±0.34)、(1.56±0.25)ml/s,术后10 d分别为(0.83±0.29)、(1.11±0.27)ml/s.老年供体组术后3个月CCr为(0.97±0.10)ml/s,中青年供体组为(1.16±0.17)ml/s.2组手术前后CCr变化差异无统计学意义(P＞0.05).老年供体组术后10 d的留存肾GFR为(36.58±13.26)ml/min,术后3个月增加至(52.31±12.74)ml/min,达到原双肾GFR[(73.01±20.96)ml/min]的71.65%.中青年供体组术后10 d GFR为(38.32±10.79)ml/min,术后3个月增至(56.31±12.95)m1/min,达到原双肾GFR[(78.34±20.98)ml/min]的71.88%.手术前后GFR变化差异均无统计学意义,P值均＞0.05.供者手术并发症包括术中脾脏包膜下血肿1例、降结肠破裂1例和切口脂肪液化5例.术前和术后各时间点2组受者SCr水平差异无统计学意义(P值均＞0.05).2组供者平均住院时间分别为(13.2±3.4)和(12.8±2.6)d,P=0.4563.2组受者平均住院时间分别为(23.1±11.9)和(22.3士11.4)d,P=0.6991.老年供体组受者6个月内急性排斥反应发生率为4.7%(2/43),中青年供体组为7.9%(7/89).术后1年内2组各死亡1例,中青年供体组因急性排斥反应移植肾失功1例.结论 老年活体亲属供肾可能存在一定危险性,应予以重视,但供体年龄并非独立风险因素.在严格控制老年供者的纳入标准、对供者进行全面系统评估的情况下,老年供体活体肾移植的供体和受体围手术期并发症/疗效及安全性与中青年供体比较无明显差异.     

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。     

两种不同供肾来源肾移植受体疗效的临床随访研究

目的:比较国人活体肾移植与尸体肾移植的疗效并分析相关因素。方法:对同期154例活体肾移植受体(活体供肾组)和包括DCD供体在内的262例尸体肾移植受体(尸体供肾组)随访12~58个月,分析比较两组患者移植肾并发症、肾功能和人肾累积存活率情况。结果:活体供肾组和尸体供肾组分别发生急性排斥反应(AR)18例(11.7%)和59例(22.5%)(P=0.006),移植物功能延迟恢复(DGF)6例(3.9%)和28例(10.7%)(P=0.015)。两组在7天、1、3、6、12、36个月六个随访点的Ccr和Scr结果显示,早期活体供肾组移植肾功能恢复稍快,但在术后12和36个月时,两组Ccr和Scr的差异并无统计学意义。活体供肾组和尸体供肾组在整个随访期内的人肾累积存活率差异也无统计学意义,1年时人累积存活率分别为96.5%和97.9%(P=0.414),移植物累积存活率为96.2%和97.4%(P=0.726);3年时人累积存活率分别为96.2%和95.8%(P=0.846),移植物累积存活率为93.7%和92.8%(P=0.875)。结论:两种供肾方式受体1年和3年人肾累积存活率相似。活体肾移植受体AR、DGF等并发症发生率较低,早期肾功能恢复稍快,但1年及3年时肾功能与尸体肾移植相似,随访期内活体供肾组受体最佳肾功能出现在术后3年时,而尸体供肾组出现在术后3个月时。     

供肾穿刺活检在亲属活体肾移植中的应用及边缘供肾对受者预后的影响

目的 分析供肾穿刺活榆在亲属活体肾移植中对供肾质量的诊断价值及边缘供肾对亲属活体肾移植受者早期预后的影响.方法 2004年2月至2008年7月142例亲属活体肾移植患者,按照供体年龄和供肾情况分为边缘供者组(51例)和非边缘供者组(91例).并对49例亲属活体供肾行细针穿刺活检术.分析2组受者的术后血肌酐(Scr)变化、Scr最低值、所需时间、术后并发症发生率.结果 49例亲属活体供肾中13例发生病理改变.边缘供者组受者Scr在术后4周、12周、6月及最低Scr水平均高于非边缘供者组(均P＜0.05),而术后12个月、24个月、36个月Scr和Scr恢复至最低水平所需时间差异无统计学意义(均P＞0.05).边缘供肾受者术后并发症发生率与非边缘供肾受者差异无统计学意义.结论 边缘供肾受者的早期临床疗效是理想的,但术后血肌酐基线较非边缘供肾患者高,应严格控制其纳入标准.供肾穿刺活检有利于发现常规无创检查难以发现的潜在肾脏疾病,对供受者具有重要诊断和治疗价值.     

供肾穿刺活检在亲属活体肾移植中的应用及边缘供肾对受者预后的影响

目的 分析供肾穿刺活榆在亲属活体肾移植中对供肾质量的诊断价值及边缘供肾对亲属活体肾移植受者早期预后的影响.方法 2004年2月至2008年7月142例亲属活体肾移植患者,按照供体年龄和供肾情况分为边缘供者组(51例)和非边缘供者组(91例).并对49例亲属活体供肾行细针穿刺活检术.分析2组受者的术后血肌酐(Scr)变化、Scr最低值、所需时间、术后并发症发生率.结果 49例亲属活体供肾中13例发生病理改变.边缘供者组受者Scr在术后4周、12周、6月及最低Scr水平均高于非边缘供者组(均P＜0.05),而术后12个月、24个月、36个月Scr和Scr恢复至最低水平所需时间差异无统计学意义(均P＞0.05).边缘供肾受者术后并发症发生率与非边缘供肾受者差异无统计学意义.结论 边缘供肾受者的早期临床疗效是理想的,但术后血肌酐基线较非边缘供肾患者高,应严格控制其纳入标准.供肾穿刺活检有利于发现常规无创检查难以发现的潜在肾脏疾病,对供受者具有重要诊断和治疗价值.     

活体肾移植供肾切除术对供体早期肾功能的影响

目的 分析活体肾移植供肾切除术对供体肾功能早期的影响.方法 回顾性分析本中心自2010年4月至2014年11月467例活体供肾者的临床资料,提取肾切除术前,术后3d、7d、1个月、3个月时的血肌酐、肾小球滤过率(GFR)、尿酸、尿微量蛋白数据,了解肾切除术对供体早期肾功能的影响.结果 活体供肾者术前,术后3d、7d、1个月、3个月时的血肌酐(Scr)分别为(59.9± 12.8)、(85.8±21.0)、(91.2±21.3)、(92.8±21.6)、(91.0±21.3) μmol/L;肾小球滤过率(GFR)分别为(113.5±25.3)、(75.1±17.9)、(70.3±15.2)、(68.5±16.0)、(69.5±15.1) ml/min;血尿酸(Ua)分别为(292.60±79.58)、(142.18±55.28)、(228.41±66.39)、(321.31±83.72)、(346.61±87.21)μmol/L;术后与术前相比上述指标差异均有统计学意义(P＜0.05).术后各时间点尿IgG、微量白蛋白、视黄醇结合蛋白、β2微球蛋白与术前相比差异均有统计学意义(P＜0.05).结论 活体供肾切除术早期明显影响供体肾小球滤过率、尿酸及尿微量蛋白,临床需关注其对肾功能长期的影响.     

亲属活体肾移植供者的安全性分析

目的 分析亲属活体肾移植供者手术前后的相关指标变化,探讨活体供者的安全性.方法对132例亲属活体供肾者进行心理和生理分析,包括尿常规、血生化、肾小球滤过率(GFR)、内生肌酐清除率(CCr)和生活质量等指标.结果 132例供肾者的生活质量评分与正常人群比较差异无统计学意义(P＞0.05).供肾切取术前供者血肌酐(SCr)为(78.33±15.94)μmol/L,术后7 d为(108.49±19.88)μmol/L(P=0.000);术后6个月为(112.47±20.38)μmol/L,与术后7 d比较差异无统计学意义(P=0.109).供肾切取术前供者CCr为(95.80±20.92)ml/min,术后7 d为(57.36±14.92)ml/min,与术前比较P=0.017;术后6个月为(65.49±8.25)ml/min,与术后7 d比较差异无统计学意义(P=0.619).术前双肾GFR为(74.08±18.51)ml/min,右肾GFR为(38.43±10.33)ml/min,供肾切取术后6个月保留右肾GFR为(56.49±13.01)ml/min,与术前双肾GFR比较,P=0.000;保留右肾GFR与术前自身比较代偿性增加47.0%.手术并发症包括脾脏包膜下出血1例,降结肠破裂1例,切口脂肪液化5例. 结论 术前对供肾者进行充分系统的医学心理学和生理学评估,严格履行风险告知义务,供受者术中规范操作,围手术期合理管理和建立严密的随访制度,可以有效提高亲属活体移植供肾者的心理和生理安全性.     

50岁以上亲属活体肾移植供者安全性分析

目的 探讨50岁以上亲属活体供肾移植供者的安全性. 方法 1993年4月至2007年12月行年龄>50(51～78)岁亲属活体供肾移植45例,同期年龄≤50岁供者62例作为对照组.比较2组供者手术前后SCr、GFR变化,手术并发症及术后随访情况. 结果 供肾手术均获成功.2组供者术前SCr分别为(82.16±10.86)和(78.66±10.41)μmol/L,术后1周、1个月及12个月分别为(106.00±8.68)、(86.62±10.81)、(83.18±9.19)μmol/L和(103.89±9.29)、(85.65±7.42)、(80.32±8.89)μmol/L,组问比较差异均无统计学意义(P>0.05);2组术前GFR分别为(85.82±6.26)和(88.74±9.44)ml/min,术后1、12个月分别为(49.76±3.57)、(60.32±4.42)ml/min和(51.36±5.39)、(62.10±6.31)ml/min,组间比较差异均无统计学意义(P>0.05).2组供者术后平均住院时间分别为9及8 d.>50岁组术中发生胸膜损伤2例,术后切口疼痛、下腹部麻木感4例,切口脂肪液化1例;对照组发生胸膜损伤1例,术后切口疼痛、下腹部麻木感9例.>50岁组供者随访37(12～180)个月,肾功能正常.结论 高龄不是亲属活体供肾绝对禁忌证,术前全面系统评估及术中仔细操作是高龄供者术后安全性的重要保证.     

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.     

Role of the donor in post-transplant renal function

Background: The donor, i.e. adult or paediatric, might influence the outcome of the graft function. Methods: The glomerular filtration rate (GFR) of 120 transplanted children (47 girls) aged 10.4±4.6 years (0.7-17.2) was prospectively assessed over a 5-year period. The patients were divided into two groups according to the age of donor: adult (donor age >18 years; n=33) and paediatric (donor age <18 years; n=87). GFR was assessed by inulin clearance at 3, 6 and 12 months and yearly thereafter. Results: The average GFR was stable in the range of 70 ml/min/1.73 m² for the whole follow-up period. The adjusted GFR in adult graft recipients was significantly higher at 3 months post-transplantation: 80.6±36.9 vs 65.1±22.0, P=0.02. However, from the second year post-transplantation, the adjusted GFR in paediatric graft recipients became significantly higher than that of adult graft recipients. Such results could be due to an improvement in the absolute GFR (ml/min) of paediatric graft recipients with time (P=0.0001) whereas that of the adult graft recipients remained stable despite the children's growth. Conclusions: The adjusted GFR of adult graft recipients was significantly higher than that of paediatric graft recipients in the early post transplant period. In the long-term, a progressive decrease in adjusted GFR was noted in adult graft recipients. On the one hand, this may be due to a functional adaptation and/or inadequate compensatory growth of the graft. On the other hand, the absolute GFR of paediatric graft recipients increased, suggesting an ongoing capacity for growth and/or compensatory hypertrophy after child-to-child renal transplantation.     

The advanced age deceased kidney donor: current outcomes and future opportunities

BaCKGROUND: Due to the aging general population, deceased donors > or =55 years will form an increasingly larger proportion of the deceased kidney donor pool. METHODS: Using data from the United States Renal Data System, we determined the change in graft survival between 1996 and 2000 among 32,557 recipients of donors aged <55 years and > or =55 years in univariate and multivariate survival analyses. We identified donor risk factors for graft loss that might influence the decision to accept or reject donors <55 and > or =55 years. The initial glomerular filtration rate established 6 months after transplantation (initial GFR), and the stability of GFR in the first post-transplant year (GFR at 12 months post-transplantation-GFR at six months post-transplantation) were compared between recipients of donors <55 and > or =55 years and the association of these factors with graft survival was determined. RESULTS: In 2000, one-year graft survival in donors > or =55 years was 86.7%. Between 1996 and 1999 the projected graft half life improved from 11.4 to 14.5 years for recipients of donors <55 years (P < 0.01); however, there was no improvement for recipients of donors > or =55 years (8.2 to 9.2 year, P= 0.46). Among donor factors studied, only cold ischemic time >24 hours identified recipients of donors > or =55 years at risk for graft loss. Compared to recipients of donors <55 years, recipients of donors > or =55 years established a lower initial GFR (42 vs. 56 mL/min/1.73 m(2), P < 0.0001), and had less stable GFR in the first post-transplant year (-1.5 vs. -0.6 mL/min/1.73 m(2), P <.0001). Recipients from donors > or =55 years with initial GFR > or =50 mL/min/1.73 m(2) and no drop GFR during the first post-transplant year had graft survival that was superior to that of donors <55 years with either initial GFR <50 mL/min/1.73 m(2) or a drop in GFR during the first post-transplant year. CONCLUSION: Donors > or =55 years are a valuable resource. Despite improvements in immunosuppression, rejection, and delayed graft function, the projected increase in long-term graft survival among recipients of donors <55 years was not shared among recipients of donors > or =55 years. Recipients of donors > or =55 years had lower initial GFR, and less stable GFR during the first post-transplant year. Limiting cold ischemic time to <24 hours may improve outcomes among recipients of donors > or =55 years. Future studies to maximize initial GFR and minimize early loss of GFR in recipients of donors > or =55 years may lead to improved outcomes from deceased donors > or =55 years.     

Follow-up after renal transplantation with organs from donors after cardiac death

Kidneys obtained from donors after cardiac death (DCD) are known to have higher rates of primary nonfunction and delayed graft function (DGF) than heart beating cadaveric donor (CAD) kidneys, but little is known about long-term function of DCD grafts that survive to 1 year. To investigate the outcomes of renal transplant recipients whose DCD graft functioned for at least 1 year, this study analyzed data collected from 326 DCD graft recipients and 340 CAD-matched controls enrolled in a prospective, multinational, observational study--Neoral-MOST (Multinational Observational Study in Transplantation) (Novartis, Basel, Switzerland). No differences were found in the demographics or immunosuppression between the two groups. All patients received a Neoral-based immunosuppressive regimen. Donors after cardiac death graft recipients had a higher incidence of DGF (40% vs. 27% CAD; P < 0.001). One year glomerular filtration rate (GFR) and GFR-decline after 1 year were similar in DCD and CAD recipients (GFR 56 ml/min DCD vs. 59 ml/min CAD; GFR-decline -1.3 ml/min DCD vs. -1.4 ml/min CAD; P = not significant). Multifactorial analyses confirmed that GFR at 1 year was significantly influenced by donor age and gender, DGF, and acute rejection; however, DCD status was not an independent risk factor in cyclosporine-treated patients with grafts that had functioned for at least 1 year.     

Evaluation of the relationship and postoperative glomerular filtration rate between the living donor and the recipients in kidney transplantation

ObjectiveThis study evaluated the relationship and postoperative glomerular filtration rate (GFR) between the living donors and the recipients in kidney transplantation. A 5-year review of living donor renal transplants in a single transplant center was performed.Materials and methodsFrom January 2010 to February 2015, a total of 49 living donor kidney transplantations were performed at the China Medical University Hospital, Taichung, Taiwan. The relationship between donor and recipient and graft survival and changes in GFR during a 5-year period in a single center were retrospectively analyzed.ResultsThese 49 living donor kidney transplants represent 68% of all transplants (49/72) that were performed during this 5-year review. The recipients' kidneys were donated from offspring donors (22.4%; mean age, 54.27 years), parent donors (32.7%; mean age, 27.56 years), sibling donors (24.5%; mean age, 37.18 years), and spouse donors (20.4%; mean age, 49.09 years). The GFRs of the recipients were significantly different between these four groups at the last follow-up. The mean last follow-up postoperative GFR of the recipients was 77.71 mL/min for offspring donors, 57.81 mL/min for parents donors, 61.17 mL/min for sibling donors, and 46.30 mL/min for the spouse donors (p = 0.004). Two graft losses were noted in the spouse living donor population due to infection (cytomegalovirus and urinary tract infection).ConclusionThis study shows that the relationship of the donor to their recipient resulted in significant differences in the postoperative GFR and graft loss of the recipients. Recipients' kidneys donated from the spouse had the worst GFR compared to other groups.     

Renal allograft function in matched pediatric and adult recipient pairs of the same donor

BACKGROUND: To study the effect of donor age on kidney function, the authors investigated matched pairs from the same kidney donor given to a pediatric or an adult recipient. METHODS: Fifteen matched pairs of an adult and a pediatric patient, selected from the Eurotransplant registry, receiving the renal graft from the same cadaveric donor were selected for analysis of graft function over 7 years. Nine matched pairs were from adult donors (mean age, 40 years; range, 23-60 years) and six from pediatric donors (mean age, 11 years; range, 4-15 years). All recipients had comparable immunosuppression with cyclosporine A, prednisolone, and azathioprine and comparable numbers of acute rejection, cytomegalovirus reactivation, and antihypertensive therapy. Mean age of pediatric and adult recipients at transplantation was 5 years (range, 1-9 years) and 38 years (range, 25-60 years), respectively. RESULTS: The calculated glomerular filtration rate (GFR) corrected to body surface area was not different in adult and pediatric recipients. Initial absolute GFR was significantly lower in pediatric recipients (27 mL/ min; range, 17-38 mL/min) than in adult recipients (54 mL/min; range, 25-74 mL/min) (P <0.05) and remained lower in the following years. Initially, pediatric donor kidneys transplanted into pediatric recipients showed a lower absolute GFR than those transplanted into adults, however, approaching the GFR in adult recipients later. Adult donor kidneys transplanted into pediatric recipients showed a persistently lower absolute GFR in children compared with those transplanted into adult recipients. CONCLUSIONS: The authors conclude that adult donor kidneys in pediatric recipients decrease GFR in the early stages and lack an increase in GFR with growth of the child.     

肾部分切除术治疗肾肿瘤的安全性及疗效分析

目的 评价肾部分切除术治疗肾肿瘤的安全性及有效性.方法 回顾性分析56例行肾部分切除术患者的临床资料.术中肾动脉阻断时间≤30 min者28例.＞30 min者28例.采用99Tcm-DTPA肾核素扫描检测术前术后分肾的肾小球滤过率(GFR),比较两组患者术中出血量、手术时间、术后住院日、并发症发生率以及术前、术后1周和术后6个月的GFR值,明确肾热缺血安全时限,并随访远期生存情况.结果 术后随访30～48个月,平均36个月,总体生存率和肿瘤无复发生存率分别为100%和98%.阻断时间≤30 min和＞30 min组患者术中失血量、手术时间、术后住院日及并发症比较,差异均无统计学意义(P＞0.05).两组术前患肾GFR分别为(42.9±4.9)、(42.8±5.6)ml/min,术后1周为(34.2±4.9)和(30.4±5.2)ml/min,前者GFR降低程度低于后者,差异有统计学意义(p=0.007).术后6个月时肾热缺血时间≤30 min组患肾GFR为(41.2±4.3)ml/min,与术前相比,差异无统计学意义(P＞0.05);＞30 min组GFR为(38.1±5.0)ml/min,仍明显低于术前水平(P=0.001).结论 肾部分切除术治疗肾肿瘤局部复发率低,远期生存率高,并发症发生率低,而且能最大限度地保留功能性肾单位,安全有效.术中阻断肾血管可以有效减少术中失血,将热缺血时间控制在30 min内,对肾功能影响较小,安全可行.

Abstract：

Objective To report the safety and efficacy of partial nephrectomy (PN) in 56 patients with renal tumors. Methods A retrospective analysis was performed for 56 patients who were treated with PN.Patients were divided into two groups according to the occlusion time.The occlusion time for Group 1 was≤30 min in 28 cases,and Group 2＞30 min in 28 cases.All patients underwent pre-and post-operation 99Tcm-diethylenetriamine pentoacetic acid renal scintigraphy, to determine the renal glomerular filtration rate (GFR).The GFR values, amount of blood loss during operation,operative time,postoperative hospital stay and the complications rate were compared between the two groups prior to surgery and one week and six months post-surgery.All patients were followed-up.Results The average follow-up time was 36 (30-48) months.The overall survival rate and tumor recurrence-free survival rate were 100% and 98%.There was no significant difference between vessel clamp time≤30 min and＞30 min in the amount of intraoperative blood loss,operative time,postoperative hospital stay and complications rate,P values were 0.266,0.487,0.879 and 1.000.The preoperative and 1 week postoperative GFR values of the two groups were (42.9±4.9) and (34.2±4.9),(42.8±5.6) and (30.4±5.2) ml/min.The difference was significant(P=0.007).The GFR values were (41.2±4.3)ml/min at 6 months after surgery for Group 1,compared with that before surgery,but the difference was not significant (P＞0.05).While the GFR values were (38.1±5.0) ml/min for Group 2,and the GFR for Group 2 did not recover to the preoperative level (P=0.001). Conelusions PN for renal tumors could be a safe and effective treatment option.The damage on renal function could be minimal when the renal artery clamping time is controlled to within 30 min.     

Low absolute glomerular filtration rate in the living kidney donor: a risk factor for graft loss

BACKGROUND: There is no defined lower acceptable level of glomerular filtration rate (GFR) in potential living kidney donors. Considerations focus on the risk for the donor. We wanted to evaluate the outcome in the recipient in relation to the GFR of the living donor. METHODS: There were 344 living donated kidney transplantations performed January 1985 through February 1997 which were evaluated. Two thirds of the donors shared one haplotype with the recipient and 15% shared both. Of the donors 18% were above age 60. The median follow-up time (until graft loss) was 63 months. Before nephrectomy, the donors' GFR had been measured by isotope clearance. RESULTS: Twenty-six donors (7.6%) had an absolute GFR below 80 ml/min, i.e. not adjusted to 1.73 m2 body surface area (BSA). Cumulative graft survival, censored for graft loss because of death of the patient, was significantly reduced in recipients of grafts from donors with GFR <80 ml/min. A significant correlation between GFR and donor age was observed, but donor age per se was not identified as a risk factor for graft loss. In a Cox stepwise proportional hazards analysis, the relative risk for graft loss was 2.28 with a GFR below 80 ml/min (confidence interval 1.183-4.383, P=0.014) and with sharing one or both haplotypes 0.56 (0.313-0.988, P=0.046) and 0.36 (0.139-0.912, P=0.03), respectively. CONCLUSIONS: An absolute GFR below 80 ml/min in the living donor more than doubles the risk of graft loss. This fact should be considered when definitions of acceptable limits for donor GFR are discussed.     

Association between preoperative allograft function (effective renal plasma flow) and the change in glomerular filtration rate among living-donor kidney transplant recipients

Background

Predonation kidney function may be an important factor affecting graft outcome. Increased baseline allograft function may be more effective than strategies to slow the decline in glomerular filtration rate (GFR). However, the role of donor effective renal plasma flow (ERPF) on long-term outcome is less well understood. The purpose of this study was to examine the relationship between preoperative allograft function as measured by ERPF and the decline of allograft function as defined by the annualized change in GFR among living-donor kidney transplant recipients.

Methods

We performed a retrospective analysis of 83 patients who underwent living donor renal transplantation at our institution from March 2001 to October 2010. A time series analysis of autoregressive integrated moving average (ARIMA) model was applied to determine the annualized change in GFR after transplantation. Univariate and stepwise multivariate analyses were performed using linear regression between preoperative ERPF and annualized change in GFR after transplantation. We also investigated the influence on annualized change in GFR of other donor or recipient variables.

Results

The ARIMA model revealed that the annualized change in GFR was −1.344 ± 12.476 mL/min/1.73 m² per year. Pearson correlation coefficient for the association between predonation ERPF of the transplanted kidney and the annualized change in GFR was 0.033 (P = .777).

Conclusions

Poor predonation kidney function was not associated with an increased rate of decline of allograft function. Neither donor age nor renal function (preoperative ERPF value) was a valid predictor of change in GFR among living-donor kidney transplant recipients.     

99mTc-DTPA肾动态显像在评价活体供肾者肾小球滤过率中的应用

目的 探讨99mTc-DTPA肾动态显像在评价活体肾移植供者肾小球滤过率(GFR)中的应用,并观察GFR水平与供者年龄和性别的相关性.方法 212名候选供者均接受肝肾超声波、肝炎病毒感染以及与受者的血型和组织配型等全面检查,如上述检查符合供肾的一般要求,则进一步行99mTc-DTPA肾动态显像检测候选供者的GFR,如GFR≥1.33 ml/s(1 ml/s=60 ml/min),则认为GFR正常;如1.17 ml/s≤GFR＜1.33 ml/s,则行内生肌酐清除率(CCr)检查,如CCr正常,则认为GFR正常,如CCr异常,则候选供者放弃供肾;如GFR＜1.17 ml/s,则候选供者放弃供肾.供者选取后,应用等级相关系数分析不同性别和不同年龄供者间的GFR水平的差异.结果 212名候选供者中,GFR≥1.33 ml/s者137名;1.17 ml/s≤GFR＜1.33 ml/s者55名,其中31名因CCr异常或其他安全性考虑而放弃供肾;GFR＜1.17 ml/s者20名.共有161名候选供者最终被选择为供者供肾,其中男性105名,女性56名,年龄(42.91±11.90)岁(20～62岁).供肾前,男性和女性供者双肾总的GFR分别为(1.51±0.22)ml/s和(1.45±0.18)ml/s,二者间差异无统计学意义(P＞0.05);不同年龄各组间GFR水平的差异均无统计学意义(P＞0.05),老年(＞55岁)和中青年(≤55岁)供者间GFR水平分别为(1.48±0.22)ml/s和(1.49±0.17)ml/s,二者间差异无统计学意义(P＞0.05).相关性分析显示,供者GFR与其年龄无明显相关性(r=-0.033,P=0.69),男性和女性供者的GFR水平与其年龄也无明显相关性(r=-0.053,P=0.571;r=-0.019,P=0.754).供肾后,所有供者短期内肾功能均恢复至正常水平,未发生肾功能异常和严重并发症.结论 99mTc-DTPA肾动态显像在评价活体肾移植供者GFR中具有较好准确性和可重复性;1.33 ml/s＞GFR≥1.17 ml/s者经严格筛选后可作为供者供肾,且预后良好;供者GFR水平与其年龄和性别间无明显相关性.     

Estimated donor glomerular filtration rate is the most important donor characteristic predicting graft function in recipients of kidneys from live donors

We hypothesized that predictors of outcome in live donor transplants were likely to differ significantly from deceased donor transplants, in which cold ischaemia time, cause of donor death and other donor factors are the most important predictors. The primary aim was to explore the independent predictors of graft function in recipients of live donor kidneys (LDK). Our secondary aim was to determine which donor characteristics are the most useful predictors. A retrospective analysis was undertaken of all patients receiving live donor (n = 206) renal transplants at our institution between 31 May 1994 and 15 October 2002. Twelve patients were excluded from the analysis. Follow-up was completed on all patients until graft loss, death or 22 November 2003. We explored predictors of Nankivell glomerular filtration rate (GFR) at 6 months by multivariate linear regression. In the 194 patients studied, the mean recipient 6-month Nankivell GFR was 59 +/- 15 ml/min/1.73 m(2). Independent predictors of recipient GFR in at 6 months were donor Cockcroft-Gault GFR (CrCl; beta 0.16; CI 0.13 to 0.29; P < 0.0001), steroid resistant rejection (beta-6.07; CI -12.05 to -0.09; P = 0.006) and delayed graft function (DGF) (beta-10.0; CI -19.52 to -0.49; P = 0.039). Renal function in an LDK transplant recipients is predicted by donor GFR, episodes of steroid resistant rejection and DGF. Importantly, donor Cockcroft-Gault GFR is the most important characteristic for predicting the recipient renal function.