肝门部胆管腔内射频消融相关并发症活体实验观察

目的：观察肝门部胆管腔内射频消融后与射频消融相关的并发症及消融区病理组织学转归。方法：将14条健康狗分为2组，每组7条。在全身麻醉下通过剖腹手术刊哿13mm长单极电极针裸露部分置入胆管腔内进行射频消融。第1组输出功率10W，消融时间4min；第2组输出功率5w，消融时间8min。每组于消融后3d各处死2条狗，9d各处死1条狗，14d各处死4条狗。观察与射频消融相关的并发症。光学显微。结果：1条狗发生门静脉、肝静脉和下腔静脉皿栓。1条狗发生胆管结石。所，没有发生射频消融所致胆汁漏。射频消融3d时，凝固区内胆管黏膜层和黏膜下层以及肝组织明显坏死。射频消鼬9d时，凝固区内胆管黏膜层和黏膜下层以及肝组织有炎细胞浸润和部分纤维化。射频消融14d时，凝固区内胆管壁和肝组织明显纤维化。结论：肝门部胆管腔内射频消融后与射频消融相关并发症极少发生。消融区内胆管黏膜层和黏膜下层以及肝组织坏死、炎症细胞浸润并逐渐纤维化。     

肝内大胆管旁射频消融治疗的安全性研究

目的 评估于犬肝内大胆管旁进行射频消融(radiofrequency ablation,RFA)治疗的安全性,为临床预防RFA造成胆管损伤提供实验依据.方法 健康成年杂种犬40只,随机分为4组,每组10只,雌雄不限.RFA射频针统一张开直径为(20.0±0.3)mm.RFA治疗时,能量由小到大序贯使用.开始能量为5W,以后每1 min升高5W.于距肝内大胆管不同距离(1.0～2.9 mm、3.0～4.9 mm、5.0～7.9 mm、8.0～10.0 mm)肝组织行RFA,观察治疗后不良反应、并发症、胆红素变化及胆管的病理学改变.结果 距肝内大胆管1.0～2.9 mm肝组织行RFA,术后一般情况差,胆红素升高明显,大部分发生严重并发症,胆管病理见明显坏死;距离3.0～4.9 mm行RFA,术后一般情况差,胆红素升高,可发生严重并发症,胆管病理可见坏死和空泡样变性;5.0～10.0 mm时,术后一般情况好,胆红素轻微升高,未见严重并发症发生,大部分胆管病理改变仅为上皮细胞空泡样变性或正常.结论 于肝内大胆管旁进行RFA时,射频针尖距离肝内大胆管≥5 mm时有较好的安全性.     

胆道内冷盐水灌注预防兔肝射频消融术中胆道急性热损伤的研究

目的探讨活体兔肝于射频消融(RFA)术中行胆道内冷盐水灌注冷却(ICSP)对胆道免受热损伤的保护作用。方法取健康雄性新西兰大白兔16只随机分为2组,每组8只。实验组于RFA术前开腹行胆总管置管,并于RFA术中经胆总管置管行ICSP;对照组于RFA术前开腹,但未行胆总管置管及ICSP。RFA术中射频针针尖定位于距肝门部主胆管约5 mm。RFA术后行超声造影(CEUS)测量消融灶大小,并于RFA术后6 h取兔肝脏大体标本对消融灶旁主胆管行组织病理学检查。分析比较两组间RFA消融灶大小及主胆管损伤程度的差异。结果实验组与对照组间RFA消融灶大小差异无统计学意义;对照组RFA术后主胆管损伤程度比实验组严重(P<0.05)。结论于RFA术中行ICSP对胆管可以起到较好的保护作用。     

肝癌手术治疗中双极射频凝固器与单极射频消融的应用

目的分析及比较在肝癌手术治疗中使用双极射频凝固器辅助肿瘤切除与单极射频消融治疗肿瘤的临床应用情况。方法回顾性收集2008年6月1日至2012年5月30日4年间首都医科大学宣武医院普通外科住院治疗的肝癌患者的临床资料,根据手术中应用射频技术的不同分为双极射频凝固器辅助肿瘤切除手术组（简称双极射频凝固器组）及直接单极射频消融治疗肿瘤组（简称单极射频消融组）,非随机对照研究其应用范围、临床效果、安全性和卫生经济学指标的差异。结果纳入患者56例,男女比例1.95∶1,年龄23～86岁,肝硬变患者占85.7%（48/56）,多发肿块患者占12.5%（7/56）,腹腔镜手术占16.1%（9/56）。双极射频凝固器组22例,单极射频消融组34例。双极射频凝固器组肿瘤直径≥5 cm肿瘤患者比例大于单极射频消融组（P=0.000）,多发肿块比例和腹腔镜手术比例与单极射频消融组比较差异无统计学意义（P〉0.05）。术中出血量：双极射频凝固器组患者术中出血量多于单极射频消融组（P=0.000）,双极射频凝固器组有2例患者采取了肝门阻断措施,并有3例患者术中输血治疗,输血量为400、400及600 mL。手术时间：双极射频凝固器组手术时间比单极射频消融组延长（P=0.021）,但进一步比较直径≥5 cm亚组的肿瘤患者手术时间差异无统计学意义（P=0.191）。围手术期死亡和并发症情况：全部患者无围手术期死亡。双极射频凝固器组和单极射频消融组的手术并发症比较,差异无统计学意义〔18.2%（4/22）比11.8%（4/34）,P=0.780〕,并发症全部治愈。卫生经济学指标：双极射频凝固器组的住院时间明显长于单极射频消融组（P=0.001）,住院费用明显多于单极射频消融组（P=0.004）。治疗效果：2例肿瘤直径≥5 cm射频消融患者,术后肝动脉介入造影发现射频肿瘤边缘存在碘油沉积,考虑肿瘤残余。结论在肝癌手术治疗中,使用双极射频凝固器与单极射频消融都是安全、有效的。对直径小于3 cm的肝癌、多发肿瘤和有条件微创手术中使用直接单极射频消融治疗在术中出血、微创比例、住院时间、住院费用等方面较双极射频凝固器有优势,但在直径≥5 cm肝癌的治疗中双极射频凝固器辅助肿瘤切除可能是更好的选择。     

经皮经肝途径胆管内射频消融术治疗恶性梗阻性黄疸的可行性和安全性

目的探讨经皮经肝途径胆管内射频治疗恶性梗阻性黄疸的可行性和安全性。方法收集接受经皮肝穿刺胆管内射频治疗的患者9例。单次射频消融时间为60~120s,消融功率为5~10 W。消融结束后给予胆道支架植入术。记录患者术中不良反应、手术操作时间、术后并发症。结果本组9例患者均成功接受了胆管内射频治疗,技术成功率100%。根据胆管狭窄长度不同,射频消融次数为1~3例次,其中2例患者消融2次,1例患者消融3次。所有患者在消融后均放置胆道支架,支架直径8~10mm,长度4~8cm,共放置支架9枚。平均手术操作时间(45±13)min。术后2例患者引流管内出现一过性血性胆汁,1例患者出现胆道出血,给予止血、对症治疗后患者出血逐渐停止。结论经皮经肝途径行胆管内射频消融是治疗恶性梗阻性黄疸安全、可行的方法。     

射频消融联合肝动脉插管化疗栓塞治疗原发性小肝癌

目的比较射频消融联合动脉插管化疗栓塞(TACE)和单独射频消融对肝癌的治疗效果.方法对17例肿瘤结节小于3cm的小肝癌病人共23个肝癌结节进行射频消融治疗.其中,12个结节采用射频消融联合TACE治疗.结果联合治疗组平均毁损最大直径(40.8±3.1mm)明显大于单独射频组(37.8±2.8mm)(P＜0.05).随访期间,联合治疗组1例(11.1%)复发,单独射频组1例(12.3%)复发.联合治疗组并发症与单独射频组比较,无明显差异.结论射频消融联合TACE与单独射频治疗比较,可以增加肝癌治疗的效果.     

射频消融联合无水乙醇注射治疗肝癌协同效果的实验研究

目的 研究不同方式的射频消融(RFA)与无水乙醇(PEI)联合应用对正常兔肝脏的消融效果.方法 采用24只活体新两兰大白兔正常肝脏进行研究.分为4组,每组6只.A组为RFA后PEI组:1 cm单极射频针射频3 min+局部注射PEI 1.5ml;B组为PEI后RFA组:局部注射PEI 1.5 ml+局部1 cm单极射频针射频3 min;C组为RFA组:局部1 cm单极射频针射频3 min;D组为PEI组:局部注射PEI 1.5 ml.观察各组RFA术中的电阻、电流及单位消融体积能耗,行肝脏增强CT扫描分析各组消融灶大小、形态、体积、类圆率的情况.结果 B组消融长径和短径[分别为(24.1±4.4)mm和(21.4±4.0) mm]显著大于C组[分别为(12.4±1.6)mm和(11.1±1.4)mm]、D组[分别为(7.7±2.3)mm和(5.1±1.5)mm] (P＜0.01).在高径和消融体积上,B组[分别为(20.3±4.9) mm3和(5879±2607) mm3]显著大于A组[分别为(14.8±2.7)mm3和(3130±1250) mm3]、C组[分别为(10.7±1.6)mm3和(767±173)mm3]、D组[分别为(6.7±1.O)mm3和(146±83)mm3](P＜0.01).B组产生的消融灶类圆率最高,两两比较各组类圆率差异无统计学意义(P＞0.05).B组RFA术中电阻显著高于A组及C组(P＜0.05),B组RFA术中电流显著低于A 组及C组(P＜0.05).单位消融体积能耗A组、B组显著低于C组(P＜0.01).结论 PEI后RFA 组产生的消融体积明显大于RFA后PEI组、RFA组、PEI组;PEI后RFA组单位消融体积能耗最低;PEI后RFA组产生的消融灶类圆率最高.     

深低温对肝脏胆管系统三级以上分支的影响

目的探讨深低温对肝脏胆管系统三级以上分支的影响。方法本研究采用30只小猪,随机分为4组。用平底冷冻头分别对A组动物第一肝门部、B组动物左肝外叶的Glisson管道、C组动物左肝外叶Glisson管道的主要分支区域进行3分钟的直接深低温冷冻(冷冻时阻断肝门);对照组:仅阻断肝门3分钟。术后通过血清学、核素扫描、彩色多谱勒和病理学等方法了解肝组织及管道系统变化。结果A组动物肝门部的胆管系统在冷冻后出现严重损伤,表现为进行性、不可逆的胆管坏死、狭窄、胆瘘、化脓性胆管炎等并发症;在B、C组,冷冻可造成受冻部位肝实质、胆管及门静脉分支管壁的坏死,而肝动脉分支不受影响,术后8周原冷冻区的肝动脉、门静脉分支的管腔依然保持通敞,所在肝叶萎缩、纤维化。结论如对第一肝门部进行直接深低温冷冻,应注意避免损伤胆管系统。机体可耐受对部分肝叶胆管系统二、三级分支区域的直接深低温冷冻;冷冻可造成受冻部位肝实质的坏死,达到外科治疗目的。     

肝门阻断对肝硬化大鼠肠黏膜屏障的影响

目的 探讨肝硬化大鼠肝门阻断后肠道黏膜屏障结构和功能的改变.方法 40 只肝硬化模型雄性SD 大鼠被随机分为假手术组、肝门阻断10 min、肝门阻断20 min、肝门阻断30min 组,每组各10 只.在行肝门阻断术后18 h 乳果糖、甘露醇混合液灌胃,6 h 后收集尿液,检测乳果糖和甘露醇排出率及比值（L/M）,并于术后24 h 取未段回肠行病理组织学和电镜检查.结果 肝硬化大鼠肝门阻断10 min 时即出现明显小肠病理损伤,电镜下可见小肠微绒毛肿胀、缩短,紧密连结变宽.阻断20 min 时,小肠微绒毛缺失、脱落,细胞器肿胀.阻断30 min 时,可见部分肠黏膜细胞坏死,微绒毛脱落以及紧密连结破坏.肝门阻断10 min 组大鼠的尿中L/M 比值（0.069 ±0.022）明显高于假手术组（0.047 ± 0.016）,并随肝门阻断时间延长增高越明显.结论 肝硬化大鼠肝门阻断后可导制肠道黏膜通透性增加,肠黏膜屏障功能受损.     

磁共振胰胆管成像在成人活体右半供肝术前胆道评估中的应用

目的 探讨磁共振胰胆管成像( MRCP)在成人活体右半供肝术前胆道评估中的应用.方法 76例活体肝移植供者,均切取右半肝用于移植.脂肪餐后进行术前MRCP检查,比较MRCP胆管分型与术中胆道造影胆管分型的一致性;在MRCP图像上测量右后肝管汇入部距左右肝管汇合部的距离及相应右后肝管的直径,对相应胆管测量长度及直径与术中胆道重建方式进行二分类Logistic回归分析,并得出术中胆道是否成形的ROC曲线及其长度临界值.结果 MRCP胆管分型与术中胆道造影胆管分型的符合率为97.4％.MRCP所测右后肝管汇入部距左右肝管汇合部的距离和胆管分型是术中胆道重建方式的重要影响因素,而右后肝管直径对术中胆道重建方式的选择无影响.胆道解剖结构变异或Ⅰ型胆管(MRCP分型)中右肝管长度≤4.2mm时,95％的供肝胆道断端数多于1支,且95％行胆道成形术;Ⅲ、Ⅳ型胆管(MRCP分型)所测胆管长度为3.8mm,是选择胆道成形术的分界点.结论 MRCP胆管分型能准确反映胆道解剖结构,MRCP右后肝管汇入部距左右肝管汇合部距离测量值可以指导术中胆道重建方式的选择.     

Delayed portal vein thrombosis after experimental radiofrequency ablation near the main portal vein

BACKGROUND: Portal venous blood flow may protect adjacent tumour cells from thermal destruction with radiofrequency ablation (RFA). This study aimed to investigate the local effect of RFA on the main portal vein branch, and the completeness of cellular ablation in its vicinity, with or without a Pringle manoeuvre using a porcine model. METHODS: This was an in vivo study on 23 domestic pigs. RFA using a cooled-tip electrode was performed 5 mm from the left main portal vein branch under ultrasonographic guidance for 12 min with (n = 10) or without (n = 10) a Pringle manoeuvre. Ten pigs were killed 4 h after the procedure to study the early effects of RFA and ten others were killed 1 week later to determine any delayed effect. As a control, sham operations with a Pringle manoeuvre for 12 min were performed on three pigs. The flow velocity changes of portal vein and hepatic artery were measured using Doppler ultrasonography, and the completeness of cellular ablation around the portal vein was assessed qualitatively by histochemical staining and quantitatively by measuring intracellular levels of adenosine 5'-triphosphate (ATP). RESULTS: In the absence of the Pringle manoeuvre, there was no significant change in mean(s.d.) portal vein flow velocity before RFA (20.0(3.5) cm/s) and at 4 h (18.5(2.5) cm/s) (P = 0.210) and 1 week (19.5(2.2) cm/s) (P = 0.500) after the procedure. Gross and histological examination of the portal vein branches showed no damage without the Pringle manoeuvre. In all pigs that underwent RFA with a Pringle manoeuvre, the portal vein was occluded 1 week after the operation; histological examination of the affected portal vein showed severe thermal injury and associated venous thrombosis. The local effect of RFA on the hepatic artery was similar. With intact portal blood flow during RFA, complete ablation of liver tissue around the pedicle was demonstrated by histochemical staining and measurement of the intracellular ATP concentration. CONCLUSION: RFA was safe when applied close to the main portal vein branch without a Pringle manoeuvre, with complete cellular destruction. Use of the Pringle manoeuvre resulted in delayed portal vein and hepatic artery thrombosis and injury to the hepatic artery and bile duct.     

Intraoperative radiofrequency ablation using a loop internally cooled-perfusion electrode: in vitro and in vivo experiments

OBJECTIVE: We sought to validate the efficiency of intraoperative radiofrequency ablation (RFA) using a prototype loop internally cooled-perfusion (LICP) electrode to induce coagulation in the subcapsular portion of the liver. MATERIALS AND METHODS: In in vitro experiments, 30 ablation regions were created using a 200-W generator and a LICP electrode featured simultaneous intraelectrode cooling and continuous flow of hypertonic saline along the shaft in explanted bovine liver. In the in vivo experiments, 26 ablation zones were created according to one of the five protocols in 10 dogs: group A, RFA using a cooled-tip electrode (n = 6); group B, RFA using a LICP electrode with 2 cm loop tip (n = 6); group C, RFA using a LICP electrode with a 3-cm loop tip (n = 6); group D, RFA using a cooled-tip electrode and Pringle maneuver (n = 4); and group E, RFA using a LICP electrode with 2 cm loop tip and Pringle maneuver (n = 4). The dimensions of the coagulation parameters were compared between the groups. RESULTS: In the in vitro experiments, RFA using a 2- or 3-cm diameter LICP electrode (3.6 +/- 0.3 cm, 3.4 +/- 0.5 cm, respectively) created deeper dimensions of coagulation than did a 4-cm electrode (2.3 +/- 0.2 cm; P < 0.05). In the in vivo experiments, the RFA using the LICP electrodes in porcine liver with normal perfusion induced wider but superficial ablation regions when compared to standard RFA using an internally cooled electrode (P < 0.05). However, using a Pringle maneuver, RFA with a LICP electrode created a larger volume of ablation area when compared to RFA using an internally cooled electrode with a similar range of axial diameter along the electrode axis: 30.0 +/- 6.1 cm3 (group D) versus 68.5 +/- 14.0 cm3 (group E; P < 0.05) CONCLUSIONS: Intraoperative RFA using the LICP electrode induced a well-defined semicircular coagulation with a 3.5-cm axial diameter in the subcapsular region of the liver. This device appears to be promising for the treatment of superficial tumors during intraoperative RFA.     

入肝血流阻断下射频消融后毁损灶周围肝组织的病理变化

目的:评估血流阻断射频术后毁损灶周围正常肝脏组织的病理变化。方法:兔VX2肝肿瘤接种成功后分为单独射频组与射频联合入肝血流阻断组(联合射频组)。射频采用冷循环射频消融治疗(参数设定为30 W,8 min),入肝血流阻断采用Pringle法。1周后处死动物,通过HE染色观察术后毁损灶周围肝脏组织的病理变化。结果:与单独射频组比较,联合射频组毁损灶周边正常肝组织内中央静脉及Glisson鞘周围可见大量炎症细胞聚集,且肝细胞肿胀,门静脉、中央静脉扩张、胆管上皮增生等病理变化均更明显(均P<0.05)。结论:血流阻断后射频对毁损灶周围正常肝组织的病理损害较单独射频的损害严重。     

The effect of hepatic inflow occlusion on laparoscopic radiofrequency ablation using simulated tumors

BACKGROUND: The purpose of this study was to determine the effect of hepatic inflow occlusion (the Pringle maneuver) on laparoscopic radiofrequency (RF) ablation. METHODS: Using a previously validated agarose tissue-mimic model, 1-cm simulated hepatic tumors (three per animal) were laparoscopically ablated in five pigs with normal perfusion and then in five pigs with hepatic artery and portal vein occlusion. Energy was applied until tissue temperature reached 100 degrees C (warm-up) and thereafter for eight min. Specimens were examined immediately after treatment. RESULTS: Vascular occlusion was successful in all cases per color-flow Doppler ultrasound. Pringle time was 11.4 +/- 1.6 min. Warm-up time (2.7 +/- 1.4 vs 20.2 +/- 14.0 min) was significantly faster in the Pringle group. Ablation diameter (34.8 +/- 2.9 vs 24.7 +/- 3.1 mm), proportion of round/ovoid lesions (93% vs 20%), ablation symmetry (100% vs 40%), and margin distance (5.1 +/- 3.0 vs 1.1 +/- 1.2 mm) were significantly better for the Pringle group than the No Pringle group, respectively. CONCLUSION: Using a Pringle maneuver during laparoscopic RF ablation significantly enhances ablation geometry and results in larger margins.     

Two cases of hepatocellular carcinoma located adjacent to the Glisson's capsule treated by laparoscopic radiofrequency ablation with intraductal chilled saline perfusion through an endoscopic nasobiliary drainage tube

Radiofrequency ablation (RFA) is a commonly used local therapy for hepatocellular carcinoma (HCC). However, for tumors located adjacent to the Glisson's capsule in the hepatic hilar region, RFA may cause bile duct injury and may be difficult to perform using the standard procedure. We describe 2 HCC cases in which RFA was performed laparoscopically under general anesthesia while cooling bile ducts to prevent bile duct injury. An endoscopic nasobiliary drainage tube was preoperatively inserted, through which chilled saline was rapidly infused during laparoscopic RFA for HCC adjacent to the Glisson's capsule in the hepatic hilar region. The patient was discharged from hospital without intraoperative or postoperative complications. Follow-up contrast-enhanced CT revealed complete tumor cauterization and no evidence of late bile duct stenosis. This procedure is performed under general anesthesia and, unlike those performed under local anesthesia, is associated with minimal stress to patients and minimal risk of bile duct injury.     

Rat liver model for testing intraoperative echo contrast sonography

Summary The present animal experimental study showed that intraoperative hepatic ultrasonography using an echo contrast medium can visualize small hepatomas (with a diameter of between 3 and 15 mm) induced in the rat liver, although they were not recognizable with plain ultrasonography. A homogeneous increase in the echogenicity of the liver tissue was achieved by using an echo contrast medium (Echovist) based on galactose microparticles. Selfmade bubble preparations such as those used in echocardiography were far less effective. When the dosage was optimal (0.01–0.003 ml/g liver weight with concentrations of 200 and 300 mg/ml Echovist), homogeneous contrast enhancement of the liver was achieved for at least 10 min after a single bolus injection via all routes of contrast adminstration (hepatic artery, portal vein, bile duct). As a result, hepatomas appeared as hypodense formations (portal vein and bile duct) or as hyperdense zones (hepatic artery).     

Effects of the intermittent Pringle manoeuvre on hepatic gene expression and ultrastructure in a randomized clinical study

BACKGROUND: The intermittent Pringle manoeuvre during hepatectomy results in a better clinical outcome when the accumulated ischaemia time is less than 120 min. The aim of this study was to investigate hepatic gene expression related to microcirculatory modulation and ultrastructural changes in patients having the intermittent Pringle manoeuvre. METHODS: Forty patients who underwent hepatectomy for liver tumours were randomly assigned to liver transection with intermittent Pringle manoeuvre (Pringle group, n = 20) or without the manoeuvre (control group, n = 20). The clinical data and hepatic expression of endothelin (ET) 1 and endothelial nitric oxide synthase (eNOS) combined with liver ultrastructure were compared. RESULTS: The Pringle manoeuvre resulted in less blood loss (8.9 versus 12.4 ml/cm(2); P = 0.034), a shorter transection time (2.7 versus 4.1 min/cm(2); P = 0.015) and a lower serum bilirubin level on postoperative day 2 (26 versus 35 microm/l; P = 0.04). The hepatic messenger RNA content of ET-1 decreased by 38 per cent of the basal level in the Pringle group, whereas it increased by 28 per cent in the control group (P = 0.026). More patients in the control group showed swelling of mitochondria in hepatocytes and disruption of sinusoidal lining cells (12 of 20 patients versus three of 20 in the Pringle group; P = 0.008). CONCLUSION: The intermittent Pringle manoeuvre results in less disturbance of the hepatic microcirculation and better preservation of liver sinusoids after hepatectomy.     

微胆漏在胆管吻合口狭窄中的作用

目的 观察微胆漏在胆管吻合口狭窄病理过程中的作用.方法 将斑马猜24头随机分成3组.假手术组(S组),模拟吻合在胆管扎孔2圈,每圈8孔.对照组(C组),游离胆管20mm,切除约5 mm,行端端吻合,T型管引流.治疗组(T组),依C组方式手术,在吻合口以远置Forley导尿管(8号)至吻合口上15 mm引流胆汁,气囊注水阻断胆汁流经吻合口.分析各组微胆漏、术部瘢痕增生、吻合口内径及与其近端胆管内径比值.结果 S组与C组处理部位均有瘢痕增生,管壁厚度分别为(1.5±0.2)、(1.6±0.3)mm,但差异无统计学意义(P＞0.05).T组管壁厚度为(0.9±0.2)mm,与前两组比较差异均有统计学意义(P＜0.05);T组微胆漏明显少于S组及C组,3组引流液胆红素含苗分别为(36.8±5.4)、(141.9±17.7)、(107.5±11.6)μmol/L,T组较S组及C组差异均有统计学意义(P＜0.05).结论 吻合口微胆漏是吻合口瘢痕增生狭窄的重要原因之一,设法消除胆汁刺激可以改善吻合口瘢痕增生.     

不阻断肝门的大肝癌切除术

目的 研究不阻断肝门的肝切除术在大肝癌切除手术中的价值。方法 回顾性分析30例不阻断肝门的大肝癌切除术，并与同期98例采用肝门阻断的大肝癌切除术做对比。采用单因素和多因素分析的方法，研究与大肝癌术后并发症有关的因素。结果 不阻断肝门组术后并发症率低于阻断肝门组(10．0％vs32．7％，P＝0．02)。单因素分析显示年龄、肝门阻断、术中出血量、输血量以及手术时间等与并发症发生有关，进一步通过多元逐步回归模型分析发现，年龄、肝门阻断、输血量以及手术时间是决定术后并发症发生的4个独立的预测指标。结论 大肝癌切除手术中有选择性地采用不阻断肝门的肝切除技术是安全可行的。