中国小型猪原位肝移植的围手术期处理

目的 总结中国小型猪非转流条件下原位肝移植的围手术期特点,建立成熟、稳定的移植模型.方法 通过预实验组8例次和实验组18例次非转流条件下中国小型版纳猪原位肝移植术,观察围手术期血流动力学及重要代谢指标的变化,改进围手术期处理措施,总结围手术期处理特点.结果 预实验组8例次均在术后当天死亡.实验组18例次无术中死亡,术后7天存活率为88.9%.平均手术时间(179.6±14.3)min,平均无肝期(27.3±3.4)min.无肝期血流动力学及生化代谢波动明显.术后当天麻醉清醒,术后3～5 h开始自行排出小便,术后第三天正常进食.结论 无肝期手术时间的缩短及血流动力学的相对稳定是非转流条件下猪原位肝移植成功的关键.     

非转流小型猪原位肝移植模型的建立及评价

目的建立标准化程度高、重复性和稳定性好的小型猪原位肝移植模型。方法选巴马小型猪为实验动物,在非体外静脉转流条件下行同种异体原位肝移植术,观察动物存活率及术中血流动力学、血气和生化指标的改变。结果在非体外静脉转流条件下行同种异体原位肝移植20例,平均手术时间为(181±25.8)min,平均无肝期(28.4±3.2)min。在无肝期,血流动力学和代谢发生急剧变化:平均动脉压(MAP)从无肝前期的(14.59±1.68)kPa(1cm H2O=0.098kPa)降至(5.87±0.91)kPa,中心静脉压(CVP)从(0.66±0.11)kPa降至(0.27±0.10)kPa;体温、pH、剩余碱(BE)及HCO3ˉ显著降低,心率及血清K+显著升高(P<0.05);随着门静脉和下腔静脉血流的开放,血流动力学及代谢紊乱即逐渐恢复正常。动物1周存活率为90%,16头动物存活2周以上。肝功结果:术后第1天ALT、AST和TBIL显著升高并达到峰值,第2天开始下降,第7天降至麻醉后水平。结论非转流条件下的小型猪同种异体原位肝移植模型具有标准化程度及手术成功率高、重复性和稳定性好的优点,是大型动物肝移植系列研究的理想动物模型。     

小型猪原位肝移植模型的建立与评价

目的 探讨建立放弃静脉转流的小型猪原位肝移植模型的可行性。方法 选用广西巴马小型猪(3-6月龄,8-11kg)为实验动物,共实施原位肝移植10例次。供体肝脏游离、冷灌注、切取、修整以及UW保存按常规方法进行。受体术中肝脏游离后夹闭肝上、肝下下腔静脉和门静脉并切除受体肝脏,各血管断端与供肝相应血管进行端端吻合,肝上下腔静脉和门静脉吻合完毕即开放肝脏血流,在此过程中未使用静脉转流,此后吻合肝动脉、胆管。结果 本组10例次肝移植手术后一周存活率90％(9/10),无肝期时间31.3±2.67min,无肝期血压显著下降(MAP4.5±1.58kPa)但肝血流开放后能较快恢复并渐趋平稳。结论 本组结果表明,非静脉转流条件下的小型猪肝移植模型是一操作方便、易于复制同时又具有较好重复性和稳定性的大动物肝移植模型,能应用于肝移植的系列实验研究。     

猪原位肝移植术中体外静脉转流途径的实验研究

目的　探讨猪原位肝移植手术中体外静脉转流的应用及不同转流途径对血流动力学的影响。方法　选择50只健康家猪按体重接近原则配对分为供体组与受体组进行 2 5例原位肝移植手术 ,受体组无肝期采用不同体外静脉转流途径 ,其中A组 (1 6只 )经门静脉插管 ,B组 (9只 )经脾静脉插管。术中连续监测A、B两组动物的血流动力学变化。结果　术后 2 4h ,A组存活 1 4只 ,B组 9只全部存活。A组血流动力学在无肝期开始及结束时均出现明显波动 ,平均动脉压和中心静脉压下降 ,心率上升 ;B组在整个无肝期内血流动力学保持平稳 ,两组间比较差异有显著性意义 (P<0 .0 5)。结论　猪原位肝移植术中应用体外静脉转流 ,有利于维持血流动力学稳定 ,而经脾静脉插管转流较经门静脉插管转流具有更大的优越性     

猪原位肝移植术体外静脉-静脉转流方法的探讨

目的 体外静脉转流应用于原位肝移植术，观察血流动力学及激活全血凝固时间变化。方法 杂种猪40头，随机分为供体组和受体组，采用人工心肺机单泵，在非全身肝素化下，于实验猪原位肝移植术无肝期行门静脉、下腔静脉至上腔静脉的转流，测定术中血流动力学和激活全血凝固时间的指标。结果 术中血流动力学除在无肝期及开放后早期时间内有明显波动外，余无特殊变化，此外转流期部分肝素化，并不影响转流后凝血功能。体外静脉转流量达1000ml／min，整个过程血流动力学波动小，而静脉转流量小于500ml／min则术中血流动力学不能维持。结论 在原位肝移植过程中，良好的外静脉转流对维持血流动力学稳定有重要意义，转流后及时用鱼精蛋白中和肝素可促进凝血功能正常。     

猪原位肝移植体外静脉转流中门脉系统插管的选择

目的比较在猪原位肝移植体外静脉转流中行门静脉插管或脾静脉插管对血流动力学的影响。方法选健康美国杜洛克猪60头，配对施行原位肝移植术，根据术中转流时门脉系统插管的不同．随机分为两组．即门静脉插管组(n=15)和脾静脉插管组(n=15)。术中连续监测两组动物血流动力学指标的变化。结果门静脉插管组15例中死亡2例．其中1例死于术中转流不畅，1例死于DIC；脾静脉插管组15例中死亡1例，死于失血性休克。脾静脉插管组无肝期为(44．5土7．6)min，明显短于门静脉插管组的(51．5土8．7)minoⅢ、Ⅳ期门静脉插管组血流动力学改变与脾静脉插管组相比差异有显著性意义(P＜O．05)。结论在猪原位肝移植体外静脉转流中采用脾静脉插管转流能缩短无肝期，保持术中血流动力学的相对稳定，减少术后相关并发症的发生，是一种有效的静脉转流途径。     

原位肝移植术的麻醉管理

目的探讨成年原位肝移植术病人围手术期血流动力学、内环境变化和麻醉管理方法。方法52例晚期肝病行背驮式原位肝移植术病人，采用静吸复合全身麻醉。术中监测血流动力学、血气、生化指标、凝血功能、体温、尿量及出血量等。根据成人原位肝移植术无肝前期、无肝期、新肝期的特点及术中具体情况，给予相应的处理。结果52例行肝移植术病人无术中死亡。围手术期血液动力学基本平稳。pH值和BE等代谢性指标变化较大；所有病人手术期间血游离Ca^2 均偏低。术中体温变化不大。结论肝移植手术期间血流动力学、凝血因子、电解质和酸碱平衡等变化复杂，应加强麻醉管理和监测，并积极实施血液保护措施。     

猪辅助性部分肝移植模型制作及比较

目的建立猪的辅助性部分肝移植模型,观察其肝功能和术中血流动力学变化。方法 24头健康良种家猪,体质量23-30 kg,被随机分为供体(n=12)和受体(n=12)。气管插管 全麻,硫喷妥钠静脉维持。移植前切除受体肝左叶,供肝右叶作为植入肝。预实验2例行经体位转流的原位辅助性部分肝移植,对照组(5例)行简易转流下的原位辅助性部分肝移植。模型组(5例)行异位辅助性部分肝移植, 供肝被植入受体肝下间隙,供肝肝上下腔静脉与受体肝下下腔静脉端侧吻合,供肝门静脉与受体门静脉行端侧吻合,供肝肝动脉与受体脾动脉行端端吻合。供肝胆总管置管外引流。结果预实验中行体位静脉转流的原位辅助性部分肝移植的2例受体在肝上下腔静脉阻断后很快陷入血流动力学紊乱死亡。5例行简易静脉转流的原位辅助性部分肝移植的受体,2例在24 h内死亡,1例28 h,2侧超过48 h。而模型组受体 5例中有4例存活超过24 h。AST,ALT指标手术开始至术后24 h呈持续升高。模型组术中血流动力学较其他组稳定。结论该辅助性肝移植模型简明易建且具有不需静脉转流等优点,为研究辅助性部分肝移植原肝和供肝功能及血流变化提供了理想的平台。     

无肝期液体管理对小型猪原位肝移植短期存活率影响的实验研究

目的探讨猪原位肝移植中无肝期液体管理对移植后短期存活率的影响。方法西藏小型猪随机分为供体组和受体组，共行非体外转流原位肝移植术10次。按无肝期补液量分为A组：常规补液组（n=5）；B组：限制性补液组（n=5），比较其无肝期补液量、术中血流动力学变化、移植肝脏功能恢复情况及短期存活时间。结果A组无肝期平均补液量为950±57．7ml，B组平均补液量425±64．5ml，A组无肝期血流动力学改变较B组平稳（MAP：115．5±2．3／63．75±4．0mmHg，P〈0．01；CVP：6．3±0．45／3．5±0．41cmH2O，P〈0．05）A组术后平均存活时间明显短于B组（平均存活时间26±4．6／80．3±10．7h，P〈0．01）；移植肝脏功能恢复比较提示B组恢复较好。结论无肝期液体管理影响猪原位肝移植术后短期存活情况，非限制性输液不利于猪术后存活。控制无肝期输液量能延长猪原位肝移植术后存活时间。     

猪背驮式原位肝移植的手术技巧

目的　改进和完善猪背驮式原位肝移植 (PBOLT)手术 ,为临床背驮式原位肝移植提供帮助。方法　根据猪的解剖和血流动力学特点 ,采用缝扎法切除受肝 ,减少输血量以减轻门静脉淤血。结果　实施猪PBOLT 1 6次 ,术后存活 1 3头 ,手术成功率 81 3%。平均无肝期 34min± 1 2min ,平均手术时间 7h± 1h。结论　改进和完善手术技巧 ,减轻门静脉系统淤血是PBOLT成功的关键     

小型猪原位肝移植模型的建立:体外静脉转流的重要性及两种被动静脉转流方式的比较

目的 建立巴马小香猪原位肝移植模型,探究体外静脉转流对于猪肝移植模型建立的重要性.方法 实施以巴马小香猪为实验对象的原位肝移植共30例.供体肝脏游离、灌注、切取以及保存按常规方法进行.受体术中置入左侧髂外静脉、脾静脉/门静脉和左侧颈浅静脉"Y"形插管,用作无肝期的静脉-静脉转流.受体术中肝脏游离完成后阻断门静脉,肝上、肝下下腔静脉后开放左侧髂外静脉、脾静脉/门静脉-左侧颈浅静脉转流.血管和胆道均采取端端吻合.结果 前6例未采取体外静脉-静脉转流的原位肝移植手术的受体术中全部死亡,存活率为0.0%(0/6);采用脾静脉-颈浅静脉转流方式的受体术中存活率为57.1%(8/14),而采用门静脉-颈浅静脉转流方式的受体术中存活率为100.0%(10/10),具有显著性差异(P＜0.05).原位肝移植手术时间平均为6.5 h,受体无肝期平均为(33±12)min.供肝热缺血时间平均为2 min,冷缺血时间平均为130 min.结论 采用左侧髂外静脉、门静脉主干-左侧颈浅静脉转流方式的巴马小香猪原位肝移植模型是具有可重复性好,需要的设备少,更加经济,疗效好,是比较理想的猪肝移植模型.可作为肝移植系列研究的平台.     

Piggyback technique and selective use of veno-venous bypass in adult orthotopic liver transplantation

Background. The piggyback technique (PT), with preservation of the cava, is being used more frequently in adult orthotopic liver transplantation (OLT). The advantages of PT include hemodynamic stability during the anhepatic phase without a large‐volume fluid infusion and obviating the need for veno‐venous bypass (VVB). At our center, we changed our practice in July 1997 from the standard technique (ST) of OLT with routine use of VVB to PT and selective use of VVB. The purpose of the present study was to analyze the results with the two different practices, ST‐routine VVB versus PT‐selective VVB.
Methods. Forty OLTs were performed during the period July 1995–July 1997 using ST‐routine VVB (group I) and 36 during August 1997–December 1998 using PT‐selective VVB (group II). The etiology of liver disease was similar in the two groups, with hepatitis C and alcoholic liver disease accounting for half of the patients in each group. The UNOS status, age, sex, and percentage of patients with previous upper abdominal surgery were also similar between the two groups.
Results. In the PT‐selective VVB era (group II), 34/36 patients (94%) underwent OLT with PT and VVB was used for 8 (22%) patients. The decision to use VVB was elective for 3 patients (fulminant hepatic failure, 2; severe portal hypertension, 1) and urgent for 5 patients (hemodynamic instability during hepatectomy). The intraoperative use of packed red blood cells (PRBC) (mean±SD) was 15±12 units for group I and 9±8 units for group II (p=0.023). Anastomosis time and total operating time (mean±SD) were 91±30 min and 9.5±3.2 h, respectively, for group I patients compared with 52±28 min and 7.6±1.6 h, respectively, for group II patients (p<0.0001 and 0.002, respectively). Median post‐operative stays in the intensive care unit (ICU) and in the hospital were 5 and 17 d, respectively, for group I and 4 and 11 d, respectively, for group II (p=NS). Mean serum creatinine on day 3 was similar in the two groups. Median hospital charges for group I patients were $105 439 compared with $91 779 for group II patients (p=NS). The 1‐year actuarial graft and patient survival rates were 78% and 82%, respectively, for group I, and 92% and 95%, respectively, for group II.
Conclusions. PT is safe and can be performed in the majority of adult patients (>90%) undergoing OLT. With the routine application of the piggyback procedure, the use of VVB has been reduced to 20% of OLTs at our center. The practice of piggyback technique with the selective use of VVB is associated with shorter anhepatic phase and total operating time, lower blood product use, a trend towards shorter hospital length of stay, and reduced hospital charges compared with standard technique of OLT with routine use of VVB.     

Simplified technique of orthotopic liver transplantation in pigs

BACKGROUND: Pig models have become common in transplantation immunological research. However, in pigs, clamping of the venous splanchnic system during orthotopic liver transplantation (OLT) is responsible for high morbidity and mortality rates; therefore, the use of venovenous bypass (VVB) is advocated. Because venous bypass can also cause specific complications, a simplified method for OLT in pigs has been developed and evaluated in terms of morbidity and mortality. METHODS: Twenty-three OLTs were performed between pairs of inbred miniature swine. Donor and recipient pairs (weighing 20-35 kg) were selected at 3-6 months of age. In the donor, the portal vein, infrahepatic vena cava, and suprahepatic vena cava were dissected, whereas the hepatic artery was preserved in continuity with the coeliac trunk and the abdominal aorta up to the iliac bifurcation. In situ cold perfusion was then performed. The recipient was prepared simultaneously by another surgical team. After total hepatectomy and complete portal and caval clamping, the suprahepatic vena cava and portal vein were sutured; VVB was not used. After completion of both venous sutures, the liver graft was reperfused. The infrahepatic vena cava was then anastomosed and unclamped. The donor aorta conduit was implanted end-to-side to the recipient infrarenal aorta, and the biliary reconstruction consisted of a cholecystojejunostomy with a Roux-Y loop. RESULTS: Twenty of 23 (87%) animals survived more than 1 week (7-483 days). The mean anhepatic time was 29.6+/-4.12 min. Although severe hypotension was noted during the anhepatic phase, the hemodynamic status rapidly recovered and stabilized after graft reperfusion. CONCLUSION: Simplified technique without VVB is appropriate for successfully achieving OLT in pigs.     

Perioperative renal function in patients undergoing orthotopic liver transplantation. A randomized trial of the effects of verapamil

Patients who undergo orthotopic liver transplantation often experience a significant drop in GFR postoperatively. Postulated mechanisms include intraoperative hemodynamic changes, suboptimal renal perfusion during the anhepatic stage, and cyclosporine administration. We undertook a prospective double-blind study to investigate these factors, as well as to determine the protective effects of verapamil on perioperative renal function. Twenty-five patients with normal renal function undergoing OLT received either placebo (n = 13) or verapamil (n = 12) intraoperatively and for six weeks post-OLT. No CsA was administered until after reperfusion of the graft liver, and venovenous bypass (VVB) was utilized in all cases. Patients completing six weeks of the study experienced 61% and 48% decreases in GFR within the placebo and verapamil groups respectively. A significant decrease in GFR occurred in the placebo group between one and six weeks post-OLT, and a significant drop in GFR occurred in the verapamil group by one week post-OLT. Differences between the groups were not significant, however. Systemic, renal, and hepatic hemodynamics were similar at all times between groups, and renal hemodynamics and urine output were unchanged during VVB. We conclude that (1) perioperative factors do not contribute to renal dysfunction post-OLT when VVB is used; (2) VVB preserves renal hemodynamics during the anhepatic phase; (3) CsA is the most likely causative agent for post-OLT renal dysfunction; and (4) intraoperative verapamil serves no protective role, as administered in this study.     

小型猪非转流下小体积移植肝损伤模型的建立及评价

目的 建立标准化的、可行性强且临床贴合性好的小型猪小体积移植肝损伤模型,为小肝综合征的深入研究奠定基础.方法 选用巴马小型猪,采用供体体内原位减体积70%的方法(切除肝左外叶、左中叶及大部右中叶),将30%残肝在非静脉转流下行同种异体原位肝移植术.记录动物手术相关数据、手术存活率及小肝7 d存活率,计算术后7 d移植肝再生百分比;监测术中血流动力学及血气改变;采集再灌注后2 h、术后1～7 d的外周血,检测血清总胆红素(TB)、谷丙转氨酶(ALT)、谷草转氨酶(AST)、凝血酶原时间及肌酐(Cr)水平的变化.猪死后当天尸检明确死亡原因.结果 实验共完成12对次小型猪小体积肝移植术.所取供肝与受体全肝重量比(GW/RLW)为(28.63±4.42)%,与受体体重比(GW/BW)为(0.73±0.06)%.平均手术时间、无肝期及肝下下腔静脉阻断时间分别为(191.7±14.2)min、(28.3±3.6)min和(45.0±5.8)min.实验动物手术存活率83.33%(10/12),小肝7 d存活率40%(4/10),7 d移植肝再生百分比为(278.06±42.95)%.与无肝前期相比,无肝期动物心率明显加快,平均动脉压、中心静脉压、肛温(RT)、pH、BE值均显著下降,而血清K+显著升高(P<0.01),至关腹前RT、平均动脉压、中心静脉压、K+已基本恢复.血清ALT、AST、PT和Cr均于术后1 d达到峰值,TB于术后第2天达到峰值,与灌注前水平比较具有显著性差异(P<0.01).至术后7 d,除ALT、Cr基本恢复外,TBIL、AST和PT仍维持在较高水平.结论 用巴马小型猪建立的非转流下30%体积供肝移植模型,具有标准化程度高、可行性强且临床贴合性好的优点,可作为小体积肝移植物损伤研究的理想大动物模型.

Abstract：

Objective To establish small-for-size (SFS) graft injury models in miniature pigs with high standardization, reproducibility and similarity to clinical situation. Methods Ba-Ma miniature pigs were introduced in this study and orthotopic liver transplantations (OLTs) were performed in 12 pigs with 30% liver volume allogeneil grafts (small portion of right paramedian lobe, right lateral lobe and caudate lobe) without veno-venous bypass. The profiles of intra-operational hemodynamics and metabolism were investigated. Animals were observed for 7 days with daily serum biochemistry and coagulation function exam. The survival rate related to operation itself and the SFS grafts were respectively calculated as well as the graft regenerative ratio at post-operational day (POD) 7. Results Graft weight as a percentage of the recipient's native liver weight (GW/RLW) and the total body weight (GW/BW) were (28. 63±4. 42)% and (0. 73±0.06)%. The mean operation time, anhepatic phase, and the time of blockage of infra-hepatic IVC were (191. 7±14. 2) min, (28. 3±3. 6) min, and (45. 0±5. 8) min. The survival rate related to the operation itself and the SFS graft were 83. 33% (10/12) and 40% (4/10), and the graft regenerative ratio at POD7 was (278. 06±42. 95) %. Contrast to the remarkable increase of heart rate and serum potassium during anhepatic phase, the mean arterial pressure, central venous pressure, rectal temperature, PH value and buffer excess had a significant decrease (P<0.01) with a gradual recovery after reperfusioa Serum ALT, AST, PT, Cr, and TB were significantly increased with a peak level at POD1 for the former 4 and POD2 for TB, and then began to decrease and favorably recovered at POD7, but TB, PT, and AST levels were still high when compared to those of prereperfusion (P<0. 05). Conclusion This model of OLT performed with 30% liver volume graft without veno-venous bypass was an ideal large animal model for series studies related to SFS graft injury.     

活体部分肝移植受体围术期容量和循环变化及调控

目的总结和分析我院18例活体肝移植受体围术期体液和循环变化的麻醉管理的经验和体会。方法回顾性分析2007年5月至2008年10月我院18例活体肝移植的临床资料。其中男17例,女1例;肝癌9例,慢性重型肝炎肝硬化9例。所有受体均接受右半肝移植（Ⅴ—Ⅷ段）,采用背驮式术式。结果18例肝移植手术均成功。手术时间为（10．5±1．6）h,无肝期较长（100±15）min。术中出血量（3240±268）ml。活体肝移植新肝期血流动力学参数恢复较快;无肝期末和新肝期凝血功能明显改善。手术开始至新肝期出现低钾血症5例,与术前比较差异有统计学意义（P〈0．05）。肝脏恢复灌注后,3例出现高钾血症,手术开始至新肝期,6例出现低钙血症,明显低于术前水平（P〈0．05）。术中易出现代谢性酸中毒,无肝期末及新肝期1。5min更为明显,与术前比较差异有统计学意义（P〈0．05）。结论活体肝移植无肝期时间较长,水、电解质和血流动力学改变显著,新肝期要注意纠正长时间缺血后的再灌注损伤,要努力纠正血流动力学、内环境和凝血功能的紊乱。     

Perioperative cytokines during orthotopic liver transplantation without venovenous bypass

Since most of studies investigating cytokine levels during human orthotopic liver transplantation used venovenous bypass (VVB), it may be difficult to distinguish between the increase in proinflammatory mediators induced by VVB, by ischemia-reperfusion injury or by splanchnic venous congestion in the anhepatic phase. The goal of this investigation was to assess the levels of interleukin-6 (IL-6) and soluble interleukin-2 receptors (sIL-2r) during OLT procedures routinely performed without VVB. PATIENTS AND METHODS: Twenty-one consecutive patients underwent OLT with cross clamping of the inferior caval vein without VVB. Soluble IL-2r concentrations were measured by means of luminescence enzyme immunometric assay and IL-6 by means of a sequential immunometric assay. Time points (TP) of sampling were before induction of anesthesia (TP1), after cross-clamping of the inferior vena cava (TP2), 15 minutes after reperfusion (TP3), and 24 hours after the transplant procedure (TP4). RESULTS: Soluble IL-2r increased significantly 24 hours after transplantation (P =.02) compared to TP1, TP2, and TP3. IL-6 increased significantly during the anhepatic period (TP2 vs TP1, P =.003) and again in the reperfusion period (TP2 vs TP3, P =.002). Twenty-four hours after surgery IL-6 declined significantly (TP3 vs TP4, P =.001), but remained significantly higher (P = 0.04) compared to TP1. Furthermore, we examined the relative changes (DeltaTP %) in perioperative levels of cytokines compared with those previously published in studies using VVB. We observed higher values of DeltaTP % of IL-6 in TP2 and TP4 among our group of patient without VVB. The data on sIL-2r were similar, suggesting no major effects of the operative technique on sIL-2r levels. CONCLUSION: The two interleukins showed different perioperative trends. Our data suggest that cross clamping contributes more to cell activation, namely, increased release of IL-6 in the anhepatic phase than the use of VVB. However, no major differences were observed during the reperfusion period. The extent of clinical effect on graft function of higher IL-6 levels in the anhepatic period among recipients not supported with VVB remains to be clarified.     

豚鼠至大鼠肝移植肝下下腔静脉套管方法的改进

目的探讨豚鼠至大鼠异种原位肝移植中应用改进的肝下下腔静脉套管方法的手术效果。方法豚鼠和SD大鼠各30只分别作为供、受体,并随机配对分为实验组和对照组。实验组采用改进的肝下下腔静脉套管进行肝下下腔静脉袖套管法吻合。对照组采用常规方法进行肝下下腔静脉袖套法吻合。比较两组的供肝切取时间(切、修肝时间)、受体手术时间、无肝期时间、手术成功率、肝下下腔静脉袖套吻合口附近出血发生率以及术后生存时间。结果实验组和对照组的供肝切取时间分别为(32.2±3.5)min、(45.4±5.7)min,修肝时间分别为(14.5±2.1)min、(9.2±1.8)min,切、修肝总时间分别为(46.7±4.8)min、(54.6±6.9)min,比较差异均有统计学意义(均为P0.05)。两组受体的手术时间分别为(52.7±6.1)min、(53.2±6.5)min,无肝期分别为(16.8±2.1)min、(17.2±2.5)min,比较差异没有统计学意义(均为P0.05)。实验组与对照组的手术成功率分别为93%、53%,比较差异有统计学意义(P0.05)。两组的肝下下腔静脉袖套吻合口附近出血发生率分别为0、38%,比较差异有统计学意义(P0.05)。两组手术成功的动物的术后生存时间分别为(115±24)min、(95±29)min,比较差异无统计学意义(P0.05)。结论应用改进的肝下下腔静脉套管方法进行豚鼠至大鼠原位肝移植,手术成功率高,可用于豚鼠至大鼠原位肝移植实验研究模型的制作。