婴幼儿活体肝移植33例

目的 探讨活体肝移植治疗婴幼儿终末期肝病的疗效.方法 回顾性分析2006年10月至2009年9月上海交通大学医学院附属仁济医院33例实施活体肝移植的婴幼儿的临床资料.本组患儿中位年龄10.9个月,平均体质量8.2 kg,供肝均采用肝左外叶.术后采用他克莫司或环孢素A+激素二联方案或在此基础上再加用吗替麦考酚酯的三联方案行免疫抑制治疗.分析评价手术方法、围手术期处理和随访结果.结果 供者和受者手术时间、术中出血量、术中输血量分别为(384±108)min、(183±35)ml、0和(500±103)min、(296±163)ml、(292±159)ml,供肝冷缺血时间为(64±23)min,移植物质量为(249±52)g,移植物质量与受者体质量比为2.1%±0.4%.全部供者均顺利康复,无手术并发症.受者出现肝动脉栓塞3例,门静脉栓塞2例,各类胆道并发症9例,感染11例,急性排斥反应2例,围手术期死亡5例.本组患儿1年累积生存率为85%(28/33).结论 婴幼儿终末期肝病可通过活体肝移植取得理想的效果.外科技术的提高、围手术期管理经验的积累和规范的随访可提高手术成功率和长期生存率.

Abstract：

Objective To evaluate the efficacy of living donor liver transplantation in the treatment of infants with end-stage liver diseases. Methods The clinical data of 33 infants who received living donor liver transplantation at the Renji Hospital of Shanghai Jiaotong University from October 2006 to September 2009 were retrospectively analyzed. The median age of the infants was 10.9 months, and the mean body weight was 8.2 kg.All of the grafts were left lateral lobes. Tacrolimus (or cyclosporine A) + steroid or tacrolimus (or cyclosporine A)+ steroid + mycophenolate mofeti] were applied to the infants to suppress the immune reaction. Operative techniques, perioperative management and results of follow-up were analyzed. Results The mean operation time,blood loss and blood transfusion of the donors were (384±108)minutes, (183±35) ml and O, and the three indexes of the recipients were (500± 103) minutes, (296±163) ml and (292 ± 159) ml , respectively. The cold preservation time of the grafts was (64 ±23)minutes, the mean weight of the grafts was (249 ±52)g, and the mean graft to recipient weight ratio was 2.1% ± 0.4%. All donors recovered smoothly and no complication occurred. Of the recipients, three were complicated with hepatic artery thrombosis, two with portal vein thrombosis,nine with biliary complications, 11 with infection, two with acute rejection and five infants died perioperatively.The one-year cumulative survival rate of the infants was 85% (28/33). Conclusions Infants with end-stage liver diseases could be treated by living donor liver transplantation. The development of surgical techniques and perioperative managements improves the success rate of operation and the long-term survival rate.     

应用MRCP术前评估活体肝移植供者胆管系统

Objective To determine the clinical value of MRCP for peroperative evaluation of donor biliary system in living donor liver transplantation (LDLT). Methods A total of 60 living donors for the LDLT were enrolled in this study. Of the 60 donors with a mean age of 32.2 (19-60), 50were male and 10 female. MRCP was performed before and cholangiography was done during the right lobectomy in these donors. The results of MRCP were compared with those of cholangiography to determine the value of MRCP for typing the biliary system in the donors. Results The preoperative MRCP showed that 40 donors were of type Ⅰ biliary tract, 12 of type Ⅱ , 5 of type Ⅲ and 3 of other types. The intraoperative cholangiography showed that the accordance rate of MRCP was 97.4%,91% and 89% for type Ⅰ , type Ⅱ and other types, respectively. The overall rate of accuracy of MRCP was 95% (57/60). Conlusion MRCP can show types of biliary tract in living donors for liver transplantation to provide evidence for plan of surgery.     

应用MRCP术前评估活体肝移植供者胆管系统

Objective To determine the clinical value of MRCP for peroperative evaluation of donor biliary system in living donor liver transplantation (LDLT). Methods A total of 60 living donors for the LDLT were enrolled in this study. Of the 60 donors with a mean age of 32.2 (19-60), 50were male and 10 female. MRCP was performed before and cholangiography was done during the right lobectomy in these donors. The results of MRCP were compared with those of cholangiography to determine the value of MRCP for typing the biliary system in the donors. Results The preoperative MRCP showed that 40 donors were of type Ⅰ biliary tract, 12 of type Ⅱ , 5 of type Ⅲ and 3 of other types. The intraoperative cholangiography showed that the accordance rate of MRCP was 97.4%,91% and 89% for type Ⅰ , type Ⅱ and other types, respectively. The overall rate of accuracy of MRCP was 95% (57/60). Conlusion MRCP can show types of biliary tract in living donors for liver transplantation to provide evidence for plan of surgery.     

活体肝移植供者术前磁共振胰胆管成像检查中脂肪餐的应用

目的 评价脂肪餐后磁共振胰胆管成像(MRCP)在活体肝移植(LDLT)供者术前胆道系统评估中的应用价值.方法 具有术中胆道造影(IOC)资料的LDLT供者50例.术前供者脂肪餐(进食2个油煎鸡蛋)前后分别行MRCP,比较脂肪餐前后二级胆管的显示情况及直径差异;脂肪餐后MRCP显示胆道分型的结果与相应术中IOC结果相比较,计算脂肪餐后MRCP评估正常与变异胆管的准确度、敏感度、特异度、阳性预测值和阴性预测值.结果所有供者中,脂肪餐前MRCP显示的二级胆管82%能满足评估要求,脂肪餐后MRCP显示的二级胆管100%能满足评估要求,脂肪餐前后MRCP显示二级胆管的图像质量和直径的差异均有统计学意义(P＜0.05);以相应术中IOC为参考标准,脂肪餐后MRCP准确评估胆管解剖结构分型49例(98%),显示正常与变异解剖结构的敏感度、特异度、阳性预测值、阴性预测值分别为98%、94.7%、100%、100%、96.9%.结论 脂肪餐后MRCP对二级胆管结构显示明显改善,完全能够满足临床LDLT供者术前胆道系统评估的需要,可以作为常规MRCP的有益补充.

Abstract：

Objective To evaluate the applications of magnetic resonance cholangiopancreatography (MRCP) after fat meal in the preoperative evaluation of biliary anatomy of living liver donors.Methods Fifty cases of the preoperative donors for living liver transplantation were included and all had the corresponding intraoperative cholangiography (IOC) information. The MRCP of the donors for living liver transplantation was performed before and after fat meal (two fried eggs). The visualization and diameter of the secondary bile duct were analyzed before and after the fat meal. The results of the biliary branching pattern by MRCP after fat meal were compared with the corresponding IOC results. The accuracy, sensitivity,specificity, positive predictive value and negative predictive value of MRCP after the fat meal in distinguishing normal and any type of variant biliary anatomy were calculated. Results In all cases,82% of the 50 cases in MRCP before the fat meal could meet the diagnosis needs of the preoperative evaluation,and 100% of the 50 cases in MRCP after the fat meal could meet the diagnosis needs. There was significant difference in the demonstration quality and diameter of the secondary bile duct in MRCP before and after the fat meal (P＜0. 05). MRCP showed accurate anatomy of the biliary system, using IOC as the reference standard, in 49(98%) subjects. The sensitivity, specificity, positive predictive value and negative predictive value of MRC in distinguishing normal and any type of variant biliary anatomy were 98%,94. 7%, 100%, 10% and 96. 9%,respectively. Conclusion The MRCP after fat meal can clearly demonstrate the secondary bile duct and perfectly meet the needs of the preoperative evaluation of the living liver transplantation. The MRCP after fat meal and routine MRCP should be considered complementary to one another in order to avoid complications in living liver transplantation donors.     

肝移植治疗肝癌的受者选择杭州标准在亲属活体供肝移植中的应用价值

目的 探讨肝移植治疗肝癌的受者选择杭州标准在亲属活体供肝移植中的应用价值,及其对术后存活的影响.方法 回顾分析43例亲属活体供肝移植受者的临床资料.按照是否符合米兰标准、Up-To-Seven标准及杭州标准将受者分组,比较各组纳入受者的例数、术后总体存活率及无瘤存活率.结果 符合杭州标准的受者例数比米兰标准增加了61.5 %(8/13),比Up-to-Seven标准增加了23.5 %(4/17).符合米兰标准的受者(13例)术后1、3年总体存活率和无瘤存活率分别为100 %、80.0 %和84.6 %、84.6 %;符合Up-to-Seven标准的受者(17例)术后1、3年总体存活率和无瘤存活率分别为100 %、75.2 %和87.5 %、81.2 %;符合杭州标准的受者(21例)术后1、3年总体存活率和无瘤存活率分别为100 %、80.0 %和89.5 %、84.2 %.3组间总体存活率和无瘤存活率的比较,差异均无统计学意义(P＞0.05).结论 杭州标准能将更多的肝癌患者纳入肝移植,且不影响术后总体存活率和无瘤存活率,是筛选肝癌患者接受亲属活体肝移植的有效标准.

Abstract：

Objective To investigate the clinical value of Hangzhou Criteria in selection of patients with hepatocellular carcinoma(HCC)for living donor liver transplantation(LDLT)and their effects on recipient's post-transplant survival.Methods A retrospective analysis was conducted on 43 patients with HCC who underwent LDLT in our center.All of the recipients were classified into subgroups according to Milan Criteria,Up-to-Seven Criteria and Hangzhou Criteria,and post-transplant total survival rate and tumor-free survival rate were compared among the criteria.Results The number of patients within Hangzhou Criteria was 61.5 %(8/13)more than that within Milan Criteria and 23.5 %(4/17)more than that within Up-to-Seven Criteria.The 1-,and 3-years total survival rate and tumor-free survival rate of the recipients within Milan Criteria(n=13)were 100 %,80.0 % and 84.6 %,84.6 %,those of the recipients within Up-to-Seven Criteria(n=17)were 100 %,75.2 % and 87.5 %,81.2 %,and those of the recipients within Hangzhou Criteria(n=21)were 100 %,80.0 % and 89.5 %,84.2 %,respectively.There was no significant difference among the three criteria in total survival rate and tumor-free survival rate(P>0.05).Conclusion Hangzhou Criteria further enrolled more liver transplantation candidates without decline of total survival rate and tumor-free survival.It is a more effective selection of HCC recipients for LDLT.     

胆道数字成像技术在活体肝移植肝内胆道解剖分型及胆道切面确定中的应用

目的 评价术中胆道数字成像技术在活体肝移植(living donor liver transplantation,LDLT)肝内胆道解剖分型和胆道切面确定中的作用及临床价值.方法 66例LDLT供者,通过术中胆道数字减影了解胆道分型及变异,结合金属标志物准确选择胆道离断位置,与手术结果比较,分析其在LDLT供者术中胆道解剖描述及切面确定中的作用.结果 所有供者均采用胆道数字成像技术对肝内胆道解剖进行分型,Ⅰ型(经典型)45例(68.2%),Ⅱ型(三叉型,胆总管由右前肝管、右后肝管、左肝管汇合而成)7例(10.6%),Ⅲ型(无右肝管主干,右后肝管汇入肝总管)13例(19.7%),Ⅳ型(无右肝管主干,右后肝管汇入左肝管)1例(1.5%),Ⅴ型(复杂分型)0例(0%).Ⅰ型所有供者均形成单一吻合口;Ⅱ型7例供者中4例形成2个吻合口,3例经成形或非成形后形成1个吻合口;Ⅲ型13例供者中9例形成2个吻合口,4例经成形后形成1个吻合口;Ⅳ型1例供者,2个胆道吻合口.所有供者都完成活体右半肝切取术.结论 术中胆道数字减影结合金属标志物可以精确显示肝内胆道解剖及变异并准确定位肝管切面,减少胆道吻合口数目,有助于供肝的安全获取和移植.

Abstract：

Objective To evaluate biliary digital imaging technology in determining the type of the intrahepatic bile duct anatomy and the transection plane of the duct in right lobe living donor liver transplantation(LDLT). Methods Mobile digital subtraction angiography was performed to show the intrahepatic bile duct anatomy of 66 liver transplant donor candidates. Combined with metal markers, the bile duct transection plane was defined. Comparing with the actual results, the effect of digital imaging technology in determining the intrahepatic anatomical variations and transection plane of the duct in LDLT was evaluated. Results Intrahepatic bile duct anatomical variations were showed in all donors by using digital imaging technology. type Ⅰ (classical type) was identified in45 cases (68.2%), type Ⅱ (with triple confluence, the simultaneous emptying of the right anterior segmental duct, right posterior segmental duct and left hepatic duct into the common hepatic duct) in 7 cases ( 10.6% ), type Ⅲ (no right hepatic duct stem, right posterior segmental duct draining into common hepatic duct) in 13 cases ( 19. 7% ), type Ⅳ (no right hepatic duct stem, right posterior segmental duct draining into left hepatic duct) in 1 case (1.5%), and type Ⅴ (complex variation ) in no case (0%). As a result, cases of type Ⅰ form a single anastomosis. In type Ⅱ, four cases formed double anastomoses, three cases formed single anastomosis with or without ductoplasty. In type Ⅲ, two anastomoses were formed in 9 cases, single anastomosis in 4 cases with ductoplasty. The case of type Ⅳ had double anastomoses. In all cases right lobe liver were harvested.Conclusions Biliary digital subtraction image combined with metal markers accurately defines intrahepatic bile duct anatomy and the transection plane, helping to reduce number of bile duct anastomosis, and contributes to safe graft harvesting.     

老年活体供肾移植术后供者安全性及受者移植效果的分析

Objective To investigate the safety for donors and the effectiveness for recipients of living-related donor (LRD) kidney transplantation from elder donors. Methods 251 cases of LRD kidney transplantation were reviewed. According to the age of LRDs, the patients were divided into 2 groups:≥55 years group (group A) and <55 years (group B). The parameters studied included serum creatinine (Cr), glomerular filtration rate (GFR), creatinine clearance (Ccr), perioperative complications, average hospital stay, and acute rejection rate of LRDs and recipients were compared. Results (1)There was no significant difference in serum Cr between groups A and B at different time points (P>0.05). (2)There was no significant difference in Ccr between two groups pre-donation (P = 0.45). But at the 10th day after the donor nephrectomy, Ccr level in group A was significant lower than in group B (P<0.01). (3)Total GFR pre-donation, remaining renal GFR, and remaining renal GFR on the day 10 after donation had no significant difference in both groups A and B (P>0.05). Remaining renal GFR on the day 10 before and after donation had no significant difference in group A (P>0.05), but on the day 10 after donation that was significantly increased in group B as compared with that pre-donation (P<0.01). (4) The serum Cr of recipients at different time points after transplantation had no significant difference between two groups (P>0.05). (5) The mean hospital stay after donation of LRDs and recipients had no significant difference between two groups. (6) The incidence of recipients" acute rejection was 6.50 % (5/77) in group A, and 5.75%(10/174) in group B within 6 months after operation (P = 0.95). Conclusion Transplantations performed from the elderly donors will yield similar results from younger donors if the eider donors are evaluated or assessed as the standards.     

老年活体供肾移植术后供者安全性及受者移植效果的分析

Objective To investigate the safety for donors and the effectiveness for recipients of living-related donor (LRD) kidney transplantation from elder donors. Methods 251 cases of LRD kidney transplantation were reviewed. According to the age of LRDs, the patients were divided into 2 groups:≥55 years group (group A) and <55 years (group B). The parameters studied included serum creatinine (Cr), glomerular filtration rate (GFR), creatinine clearance (Ccr), perioperative complications, average hospital stay, and acute rejection rate of LRDs and recipients were compared. Results (1)There was no significant difference in serum Cr between groups A and B at different time points (P>0.05). (2)There was no significant difference in Ccr between two groups pre-donation (P = 0.45). But at the 10th day after the donor nephrectomy, Ccr level in group A was significant lower than in group B (P<0.01). (3)Total GFR pre-donation, remaining renal GFR, and remaining renal GFR on the day 10 after donation had no significant difference in both groups A and B (P>0.05). Remaining renal GFR on the day 10 before and after donation had no significant difference in group A (P>0.05), but on the day 10 after donation that was significantly increased in group B as compared with that pre-donation (P<0.01). (4) The serum Cr of recipients at different time points after transplantation had no significant difference between two groups (P>0.05). (5) The mean hospital stay after donation of LRDs and recipients had no significant difference between two groups. (6) The incidence of recipients" acute rejection was 6.50 % (5/77) in group A, and 5.75%(10/174) in group B within 6 months after operation (P = 0.95). Conclusion Transplantations performed from the elderly donors will yield similar results from younger donors if the eider donors are evaluated or assessed as the standards.     

老年活体供肾移植术后供者安全性及受者移植效果的分析

Objective To investigate the safety for donors and the effectiveness for recipients of living-related donor (LRD) kidney transplantation from elder donors. Methods 251 cases of LRD kidney transplantation were reviewed. According to the age of LRDs, the patients were divided into 2 groups:≥55 years group (group A) and <55 years (group B). The parameters studied included serum creatinine (Cr), glomerular filtration rate (GFR), creatinine clearance (Ccr), perioperative complications, average hospital stay, and acute rejection rate of LRDs and recipients were compared. Results (1)There was no significant difference in serum Cr between groups A and B at different time points (P>0.05). (2)There was no significant difference in Ccr between two groups pre-donation (P = 0.45). But at the 10th day after the donor nephrectomy, Ccr level in group A was significant lower than in group B (P<0.01). (3)Total GFR pre-donation, remaining renal GFR, and remaining renal GFR on the day 10 after donation had no significant difference in both groups A and B (P>0.05). Remaining renal GFR on the day 10 before and after donation had no significant difference in group A (P>0.05), but on the day 10 after donation that was significantly increased in group B as compared with that pre-donation (P<0.01). (4) The serum Cr of recipients at different time points after transplantation had no significant difference between two groups (P>0.05). (5) The mean hospital stay after donation of LRDs and recipients had no significant difference between two groups. (6) The incidence of recipients" acute rejection was 6.50 % (5/77) in group A, and 5.75%(10/174) in group B within 6 months after operation (P = 0.95). Conclusion Transplantations performed from the elderly donors will yield similar results from younger donors if the eider donors are evaluated or assessed as the standards.     

大鼠慢性移植肾肾病动物模型的制作经验总结

目的 总结制作稳定的大鼠慢性移植肾肾病(CAN)动物模型的经验.方法 以F344近交系大鼠为供者,取供者左肾作为供肾,原位低温灌注;以Lewis近交系大鼠为受者,行左侧原位肾移植,供肾动脉与受者腹主动脉端侧吻合,供肾静脉与受者肾静脉端端吻合,输尿管带膀胱瓣与受者膀胱吻合.术后用环孢素A灌胃10 d,剂量为10 mg·kg-1·d-1.每月采集受者血液和尿液,测定血肌酐及24 h尿蛋白,分别于术后2、4个月获取移植肾进行病理检查.结果 45只进行移植,手术成功率为85%,单次手术时间为(120±20)min.移植后1个月,大鼠即出现血肌酐、尿素氮及血胱抑素升高,24 h尿蛋白增加,与术前相比,各项指标均升高(P<0.05);术后2个月及4个月,除尿蛋白继续增加外,其余观察指标上升不明显.移植术后2个月,移植肾有轻度至中度的间质纤维化,淋巴细胞和浆细胞的浸润;4个月时,移植肾可见广泛的间质纤维增生,间质细胞大量浸润,肾小球基底膜增厚、硬化、闭塞,肾小管萎缩退化,符合CAN的病理改变.结论 通过充分的手术强化训练及改进,规范大鼠取、肾、移植术中、术后管理的每个细节,大鼠CAN模型的成功率及稳定性高.

Abstract：

Objective To summarize the experience of establishing the stable rat model of chronic allograft nephropathy. Methods We used Fisher rats as donors and Lewis rats as recipients.After the left kidney of the donor perfused in situ under hypothermic condition, the left renal vein,abdominal aorta and bladder flap of the donor was anastomosed with the left renal vein, renal artery and bladder of the recipient, respectively. The recipients were given cyclosporin oral solution 10 mg/kg every day by gavage for 10 days after transplantation. The blood and urine samples were collected 1 month, 2 months and 4 months after transplantation and renal function and total urine protein were examined. The pathological changes of the renal allograft were observed 2 and 4 months after transplantation. Results Forty-five rats received operation and achievement ratio was 85%. The renal transplantations were finished in 120 ± 20 min. The Scr, BUN, Cycs and total urine protein demonstrated a significant increase one month after transplantation. On the second and fourth month,with the exception of urine protein continued to increase, the other indicators did not change significantly. Two months after transplantation renal pathology demonstrated light to moderate interstitial fibrosis, infiltration of lymphocytes and plasma cells. At 4th month the renal allografts showed extensive interstitial fibrosis, a large number of infiltrating interstitial cells, thickening,hardening, occlusion of glomerular basement membrane, and renal tubular atrophy that were consistent with pathological changes of chronic allograft nephropathy. Conclusion Through adequate surgical training and improvement, and specification for rat nephrectomy, transplantation surgery,and postoperative management in every detail, the model with high success rate and stability can be achieved.     

Vascular complications after pediatric liver transplantation from the living donors

Early arterial or portal vein thrombosis is a complications that can lead to graft loss and patient death or need of immediate retransplantation. The aim of the study was to assess the incidence, causes, treatment, and outcome of vascular thrombosis after living related donor liver transplantation (LRdLTx). Between 1999 and 2004 71 LRdLTx were performed in children aged from 6 months to 10 years. Vascular thrombosis was found in 12 recipients. Hepatic artery thrombosis (HAT) occurred in 4 (5.6%), portal vein thrombosis (PVT) in 8 (11.2%) cases. HAT occurred 5 to 8 days, PVT 1 to 22 days after LTx. Diagnosis of vascular thrombosis was confirmed by routine Doppler ultrasound examination. Thrombectomy was successful in one patient with HAT and in three patients with PVT. Venous conduit was performed in one patient with PVT after second thrombosis. Two children developed biliary strictures as a late complication of HAT and required additional surgical interventions. Two children with PVT developed portal hypertension with esophageal bleeding, which required surgical intervention; one another underwent endoscopic variceal ligation for grade III varices. Follow-up ranged from 7 to 60 months. One patient died as a result of HAT after retransplantation due to multiple intrahepatic abscesses 2 months after first transplant. Any risk factors of vascular thrombosis that can be controlled should be avoided after transplantation. Routine posttransplant Doppler examination should be performed at least twice a day within 7 to 14 posttransplant days. Immediate thrombectomy should be always carried out to avoid late complications and even mortality.     

Vascular complications after living donor liver transplantation: a Brazilian, single-center experience

Background

In living donor liver transplantation (LDLT), vascular complications are more frequently seen than in deceased donor transplantation. Early arterial, portal vein, or hepatic vein thromboses are complications that can lead to graft loss and patient death. The aim of this study was to assess the incidence, treatment, and outcome of vascular complications after LDLT in a single Brazilian center.

Methods

Between December 2001 and December 2010, we performed 130 LDLT. Sixty-four recipients were children (27 weighing <10 kg).

Results

Nine recipients had vascular complications. Hepatic artery thrombosis (HAT) occurred in 4 (3.1%), portal vein thrombosis (PVT) in 3 (2.3%), and hepatic vein thrombosis (HVT) and hepatic arterial stenosis (HAS) in 1 (0.8%) patient each. Complications were identified by Doppler and confirmed by angiography or angiotomography. Patients with HAT were listed for retransplantation. One died before retransplant. Two children were submitted to retransplantation; one is still alive, with neurologic sequelae. One adult with HAT was retransplanted with a deceased donor graft and is doing well 58 months after surgery. Two patients with PVT died as a consequence of graft malfunction. In the other case, portal vein arterialization was performed, but patient died 11 months posttransplant. HVT was detected after cardiac reanimation and was treated with an endovascular stent. This patient died 3 months after LDLT. HAS was diagnosed after liver abscess development and was successfully treated by endovascular angioplasty. No recurrence was observed after 22 months. Follow-up ranged from 9 to 117 months.

Conclusion

Pediatric patients are more prone to develop vascular complications after LDLT. Long-term survival was statistically lower for recipients with vascular complications (33.3% vs 77.7%; P = .008).     

Treatments and outcomes of intra-operative portal vein thrombosis in living-donor liver transplantation due to biliary atresia

BackgroundPediatric living-donor liver transplantation (LDLT) has become one of the most effective therapies for pediatric end-stage liver diseases. We aim to investigate the risk factors for intra-operative portal vein thrombosis (PVT) and the short- and long-term outcomes in children post LDLT.MethodsThis was a retrospective analysis from 584 cases of biliary atresia (BA) patients who had undergone LDLT from January 2014 to December 2019 at our hospital. Patients were divided into PVT and non-PVT groups according to the occurrence of PVT during LDLT.ResultsThe median age of recipients at transplantation was 7.22 (quartiles, 6.03, 9.50) months, the incidence of intra-operative PVT was 5.31% (31/584). The independent risk factors for intra-operative PVT were the diameter of the recipient's PV not greater than 4 mm and a higher ratio of graft-to-recipient PV diameter. The cumulative survival rates of grafts and recipients were 93.5% and 93.5% in the PVT group, and 94.9% and 95.3% in the non-PVT group, respectively, without significant difference. The recovery of graft function was similar in recipients with or without interposed graft vessel (IGV). However, the incidence of PV stenosis was higher in recipients with IGV after LDLT.ConclusionIntra-operative PVT is a common complication in pediatric LDLT, but an excellent prognosis can be achieved by appropriate and individualized surgical treatment. We noted that intra-operative PVT did not affect the survival rates of grafts and recipients, but there was a higher incidence of PV complications after LDLT.Level of EvidenceⅢ     

婴幼儿活体肝移植后的血流动力学变化及血管并发症

目的 探讨婴幼儿活体肝移植术后的血流动力学变化及血管并发症的发生情况.方法 应用彩色多普勒超声观测34例婴幼儿活体肝移植术后2个月内门静脉、肝动脉、肝左静脉最大流速及肝动脉阻力指数变化情况,并观察术后血管并发症的发生情况及其预后.结果 34例受者中,术后超声显示血管通畅者29例(85.3%,29/34),发生血管并发症5例(14.7%,5/34).29例血管通畅的患儿,术后第1天时门静脉最大流速(vmax)为(53.97±21.44)cm/s,肝动脉收缩期最大流速(PSV)为(52.88±17.87)cm/s,阻力指数(RI)为0.73±0.09,肝左静脉最大流速为(40.53±25.07)cm/s.与术后第1天比较,术后1周时门静脉vmax、肝动脉PSV、肝左静脉vmax及肝动脉RI的差异均无统计学意义(P＞0.05);术后2周时门静脉vmax为(44.26±17.43)cm/s,明显低于术后第1天(P＜0.05);术后2个月时门静脉vmax为(40.31±26.29)cm/s,肝动脉PSV为(41.50±8.67)cm/s,均明显低于术后第1天(P＜0.01,P＜0.05).5例血管并发症均发生在术后7 d内,其中肝动脉血栓形成3例(2例行取栓术,1例行溶栓治疗),门静脉血栓形成2例(1例行取栓术,1例行溶栓治疗),5例中3例死亡.结论 婴幼儿活体肝移植术后门静脉vmax和肝动脉PSV呈下降趋势;血管并发症发生时间早,发生率较高,活体肝移植术后7 d内至少应每天进行1次超声检查.     

活体肝移植22例临床分析

目的 总结开展活体肝移植的临床经验,探讨进一步提高活体肝移植疗效的措施.方法 回顾性分析我院22例活体肝移植供受体的临床资料,总结术前评估过程、手术方法和术后并发症的情况.结果 本组获取的供肝移植物包括左外叶2例、左半肝6例、扩大左半肝1例、右半肝5例和扩大右半肝8例.所有供体术后恢复顺利,未出现严重并发症.22例受体中成年患者13例,儿童患者9例.围手术期发生并发症8例,包括严重腹腔感染1例,肝功能恢复不良合并伤口感染1例,腹腔内出血继发肝动脉血栓形成1例,此3例患者最终均因多器官功能衰竭死亡.1例肝功能衰竭的患儿术后因心肺功能衰竭死亡.另外发生胆漏2例,顽固性腹水1例,右下肢深静脉血栓形成1例,均通过保守疗法治愈.18例受体病愈出院.手术后期发生胆道吻合口狭窄3例,行PTCD并留置支撑管治疗,Oddi括约肌失迟缓引起的梗阻性黄疸1例,行内镜下十二指肠乳头括约肌切开术治疗.此4例患者病情稳定,肝功能均已恢复正常.结论 选择合适的供体、掌握关键的手术技术,才能使供受体都获得良好的预后.     

Four hundred thirty consecutive pediatric living donor liver transplants: variables associated with posttransplant patient and graft survival

The availability of living donors allows transplant teams to indicate living donor liver transplantation (LDLT) early in the course of liver disease before the occurrence of life-threatening complications. Late referral to transplant centers is still a problem and can compromise the success of the procedure. The aim of this study was to examine the perioperative factors associated with patient and graft survival for 430 consecutive pediatric LDLT procedures at Sirio-Libanes Hospital/A. C. Camargo Hospital (S?o Paulo, Brazil) between October 1995 and April 2011. The studied pretransplant variables included the following: recipient age and body weight, Pediatric End-Stage Liver Disease score, z score for height/age, bilirubin, albumin, international normalized ratio, hemoglobin, sodium, presence of ascites, and previous surgery. The analyzed technical aspects included the graft-to-recipient weight ratio and the use of vascular grafts for portal vein reconstruction. In addition, the occurrence of hepatic artery thrombosis (HAT), portal vein thrombosis (PVT), and biliary complications was also analyzed. The liver grafts included 348 left lateral segments, 5 monosegments, 51 left lobes, and 9 right lobes. In a univariate analysis, an age < 12 months, a low body weight (≤10 kg), malnutrition, hyperbilirubinemia, and HAT were associated with decreased patient and graft survival after LDLT. In a multivariate analysis, a body weight ≤ 10 kg and HAT were significantly associated with decreased patient and graft survival. The use of vascular grafts significantly increased the occurrence of PVT. In conclusion, a low body weight (≤10 kg) and the occurrence of HAT independently determined worse patient and graft survival in this large cohort of pediatric LDLT patients.     

Donor complications including the report of one death in right-lobe living-donor liver transplantation

BACKGROUND/AIMS: Our objective is to assess donor complications in all right hepatic lobe living-donor liver transplantation (LDLT) at our center. METHODS: Of a total of 352 liver transplantations performed, 60 were right-lobe LDLT. Most donors (88.3%) were related to the recipients. RESULTS: Mean hospital stay was 5.4+/-0.6 days. No complications occurred due to preoperative evaluation. Most donors received one or two units of autologous blood transfusion. Only 5 (8.3%) needed nonautologous blood transfusion. Most complications were minor and treated conservatively. Bile leaks from the cut surface of the liver occurred in 5 donors (8.3%). Two patients had potentially fatal complications: perforated duodenal ulcer and portal vein thrombosis (PVT). The donor with perforated ulcer developed septicemia and multiple organ failure. He was discharged from the hospital with hemiparesis due to cerebral ischemia. The patient with PVT remained asymptomatic and the portal vein was recanalized by the 3rd postoperative month. One donor died in the immediate postoperative period of cardiac arrest due to cardiac arrhythmia. CONCLUSION: Right hepatectomy for LDLT may be associated with significant morbidity, including death and it should be performed only by surgeons with great experience.     

Liver transplant recipients with portal vein thrombosis receiving an organ from a high‐risk donor are at an increased risk for graft loss due to hepatic artery thrombosis

We hypothesize that recipients with pretransplant portal vein thrombosis (PVT) receiving organs from high‐risk donors (HRD) are at an increased risk of HAT. Data on all liver transplants in the United States from February 2002 to March 2015 were analyzed. Recipients were sorted into two groups: those with PVT and those without. HRDs were defined by donor risk index (DRI) >1.7. Multivariable logistic regression models were constructed to assess the independent risk factors for HAT with the resultant graft loss ≤90 days from transplantation. A total of 60 404 candidates underwent liver transplantation; of those recipients, 623 (1.0%) had HAT, of which 66.0% (n = 411) received organs from HRDs compared with 49.3% (n = 29 473) in recipients without HAT (P < 0.001); 2250 (3.7%) recipients had pretransplantation PVT and received organs from HRDs. On adjusted multivariable analysis, PVT with a HRD organ was the most significant independent risk factor (OR 3.56, 95% CI 2.52–5.02, P < 0.001) for the development of HAT. Candidates with pretransplant PVT who receive an organ from a HRD are at the highest risk for postoperative HAT independent of other measurable factors. Recipients with pretransplant PVT would benefit from careful donor selection and possibly anticoagulation perioperatively.     

Intraarterial thrombolytic treatment for hepatic artery thrombosis immediately after living donor liver transplantation

Hepatic artery thrombosis (HAT) following living donor liver transplantation (LDLT) remains one of the major causes of graft failure and mortality in liver transplant recipients. This complication requires early diagnosis and revascularization to avoid graft loss. We have reported herein two cases of successful urokinase intraarterial thrombolytic treatment for HAT in the immediate postoperative period after LDLT. Significant elevation of liver transaminases was noted 6 and 4 hours after LDLT and HAT confirmed by three-dimensional computed tomogram and angiogram. Both patients were treated successfully with intraarterial thrombolysis using an urokinase infusion (a total dose of 200,000 to 250,000 IU over 20 to 25 minutes) immediately after HAT was confirmed. One patient underwent laparotomy and bleeder ligation owing to hepatic arterial anastomotic site bleeding after thrombolysis. These two patients remain in good condition without any ischemic graft sequelae at 7 and 8 months follow-up. In conclusion, intraarterial thrombolysis using an urokinase infusion could be considered as one of the treatment modalities of acute HAT following LDLT even in the immediate postoperative period.     

Endovascular management of early hepatic artery thrombosis after living donor liver transplantation

To study the feasibility of endovascular management of early hepatic artery thrombosis (HAT) after living‐donor liver transplantation (LDLT) and to clarify its role as a less invasive alternative to open surgery. A retrospective review of 360 recipients who underwent LDLT. Early HAT developed in 13 cases (3.6%). Diagnosis was performed using Doppler, CT angiography, and digital subtraction angiography. Intra‐arterial thrombolysis (IAT) was performed using streptokinase or tPA. In case of underlying stricture, PTA was attempted. If the artery did not recanalize, continuous infusion was performed and monitored using Doppler US. Initial surgical revascularization was successful in 2/13 cases. IAT was performed in 11/13 cases. The initial success rate was 81.8% (9/11), the failure rate was 18.2% (2/11). Rebound thrombosis developed in 33.3% (3/9). Hemorrhage developed after IAT in 2/11 cases (18.2%). Definite endovascular treatment of HAT was achieved in 6/11 cases (54.5%) and definite treatment (surgical, endovascular or combined) in 9/13 cases (69%). (Follow‐up 4 months–4 years). Endovascular management of early HAT after LDLT is a feasible and reliable alternative to open surgery. It plays a role as a less invasive approach with definite endovascular treatment rate of 54.5%.