Outcomes and complications for portal vein or superior mesenteric vein injury: No improvement in the era of damage control resuscitation

IntroductionPortal vein (PV) and superior mesenteric vein (SMV) injuries are lethal. We hypothesised outcomes have improved with modern trauma care.MethodsWe reviewed patients presenting to our Level 1 trauma centre over ten-years with PV/SMV injuries, analysing physiology, operative management, associated injuries, and outcomes.ResultsTwenty-four patients had 7 PV and 15 SMV injuries, 2 had both; all had operative exploration. Sixty-seven percent had penetrating trauma. While many had normal vitals, profound acidosis was common. All patients had ≥2 additional abdominal injuries, liver most common (50%). Additional abdominal vascular injuries were more common in non-survivors than survivors: IVC 46% vs 22%, common hepatic artery 20% vs 0%, SMA 26% vs 11%. The mean injury severity score (ISS) was 32.4, and the mean new injury severity score (NISS) was 44.5. Mortality was 63%. Eleven patients died from exsanguination, two from SMV thrombosis, and two from sequelae of other injuries. All survivors had venorrhaphy, as did 8 non-survivors. Non-survivors were also shunted; had ligation; or bypass, shunting, and ligation. Three exsanguinated prior to repair. Two survivors had SMV related complications. One with proximal SMV injury developed severe venous congestion and multiple enterocutaneous fistulae. Another developed an arterioportal fistula, managed with embolisation and percutaneous portal vein stenting.ConclusionDespite advances (REBOA, damage control surgery and resuscitation, liberal use of ED thoracotomy), PV and SMV injuries remain lethal. Injuries to other structures are ubiquitous. Early exsanguination is the major cause of death. All survivors had successful venorrhaphy; those who required more complex repairs died. Compromised mesenteric venous flow causes morbidity and mortality.     

A 20-year Experience with Portal and Superior Mesenteric Venous Injuries: Has Anything Changed?

ObjectivesTo identify predictive factors causing mortality in patients with injuries to the portal (PV) and superior mesenteric veins (SMV).DesignRetrospective analysis of prospectively collected data.Materials and methodsAdults admitted with blunt or penetrating PV and SMV injuries at an academic level I trauma center during a 20-year period.ResultsOf 26,387 major trauma victims admitted from 1987 through 2006, 26 sustained PV or SMV injuries (PV = 15, SMV = 11). Mechanism of injury was penetrating in 19 (73%) and 20 were in shock. Active hemorrhage occurred in 21. Most patients had associated injuries (2.9 ± 1.8/patient). Mean Injury Severity Score (ISS) was 27.8 ± 16.8. All PV injuries underwent suture repair and 27% of SMV injuries were ligated. Overall mortality was 46% (PV = 47%, SMV = 45%). Stab wounds had a lower mortality (31%) compared to gunshot wounds (67%) and blunt injuries (57%). Nonsurvivors had a higher ISS (35.8 vs. 20.9; p = 0.02), more associated injuries (3.7 vs. 2.2; p = 0.02), were older, and had active hemorrhage. Active hemorrhage (p = 0.04) was independently related to death while shock on admission (odds ratio = 6.1, p = 0.61) trended toward higher mortality.ConclusionDespite improvements in trauma care, mortality of PV and SMV injuries remains high. Shock, active hemorrhage, and associated injuries were predictive of increased mortality.     

门静脉和肠系膜上静脉血栓形成的CT、MRI诊断

目的探讨门静脉（PV）和肠系膜上静脉（SMV）血栓形成的CT、MRI征象及其诊断价值。方法回顾性分析25例经手术与病理证实的PV-SMV血栓形成病例CT和MRI检查资料。结果PV-SMV血栓形成的直接征象CT表现为PV-SMV血管内充盈缺损,PV周围呈轨道样增强;MRI表现为PV和SMV正常流空信号消失;急性、亚急性期血栓T1WI呈等或高信号,T2WI呈高信号;GD-DTPA增强扫描静脉期PV-SMV管腔内对比剂充盈缺损。PV-SMV血栓形成的间接征象包括肠腔扩张积液,肠管积血,肠壁增厚,肠黏膜水肿,薄纸样肠壁,缆绳征,肠系膜积液,肠壁积气,腹腔积液,门静脉海绵样变,肝脏异常灌注。结论CT、MRI是诊断PV-SMV血栓形成最有效的影像检查方法,MRI对PV-SMV血栓形成的定位、定量及血栓的分期优于CT。     

Superior mesenteric venous injuries: to ligate or to repair remains the question

BACKGROUND: Superior mesenteric vein injuries are rare and incur high mortality. Given their low incidence, little data exist delineating indications for when to institute primary repair versus ligation. The purposes of this study are to review our institutional experience, to determine the additive effect on mortality of associated vascular injuries, to correlate mortality with the American Association for the Surgery of Trauma-Organ Injury Scale (AAST-OIS) for abdominal vascular injury and to examine and define the indications and outcomes for primary repair versus ligation. MATERIAL: Retrospective 156 months study (January 1992 through December 2004) in a large Level I urban trauma center of all patients admitted with superior mesenteric vein injuries. Patients were stratified, according to surgical technique employed to deal with their injuries, into those undergoing primary repair versus ligation to determine outcomes and define the surgical indications of these methods. The main outcome measure was overall survival. Cases of survival were stratified according to surgical method: primary repair versus ligation. RESULTS: There were 51 patients with a mean Injury Severity Score of 25 +/- 12. Mechanism of injury was penetrating for 38 (76%), blunt for 13 (24%), and patients undergoing emergency department thoracotomy for 4 (8%). Surgical management was ligation for 30 (59%), primary repair for 16 (31%), and 5 (10%) patients were exsanguinated before repair. The overall survival rate was 24/50 (47%). The survival rate excluding patients undergoing emergency department thoracotomy was 51%. The survival rate excluding patients that sustained greater than 3 to 4 associated vessels injured was 65%. The survival rates of patients with superior mesenteric vein and superior mesenteric artery was 55% and superior mesenteric vein and portal vein (PV) was 40%. The survival rate of patients with isolated superior mesenteric vein injuries was 55%. Mortality stratified to AAST-OIS grade III, 44%; grade IV, 42%; and grade V, 42%. Survival rates stratified to method of management consisted of primary repair (60%) versus ligation (40%). CONCLUSIONS: SMV injuries are highly lethal. Multiple associated vessel injuries increase mortality. Mortality correlates well with the American Association for the Surgery of Trauma-Organ Injury Scale for abdominal vascular injuries. Patients undergoing primary repair have higher survival rates (63%) and lesser numbers of associated vascular and nonvascular injuries; whereas those undergoing ligation have a smaller survival rate (40%) and higher number of associated vascular and nonvascular injuries. Ligation appears to be safe and should be selected for hemodynamically unstable patients with a large number of associated injuries.     

螺旋CT血管造影在胰头癌手术中的价值

目的 探讨术前螺旋CT血管造影(SCTA)诊断局部进展期胰头癌侵犯胰周大血管在胰头癌手术中的价值.方法 92例横断面CT检查疑似局部进展期的胰头痛病人,术前均进行了sCTA检查,评价胰头癌侵犯血管的情况.根据不同的分级,采取不同的术中探查方式和术式.结果 45例胰头癌病人SMV/PV受侵2级以下,施行了经典胰十二指肠切除术.其中受侵1～2级的12例术中探查证实肿瘤与血管之间是粘连和慢性炎症表现.13例SMV/PV受侵3～4级,长度低于2 cm的,行联合血管切除(PVR)的胰十二指肠切除术,直接端端吻合重建门静脉.而SMV/PV受侵4级,长度2 cm以上的34例,5例行联合PVR的胰头癌切除术,其中胰十二指肠切除术4例,全胰切除术1例,均采用Gore-Tex人工血管植入重建门静脉.其余29例SMV/PV受侵长度3 cm以上,术中探查不可切除,行胆管空肠内引流术,其中6例同时行胃卒肠吻合术.结论 术前SCTA检查可精确诊断胰头癌侵犯胰周大血管的情况,藉此可在术中选择不同的探查方式和术式.     

Segmental resection and wedge excision of the portal or superior mesenteric vein during pancreatoduodenectomy

BACKGROUND: Resection of the portal/superior mesenteric vein (PV/SMV) during pancreatoduodenectomy (PD) is disputed. Although morbidity and mortality are acceptable, survival is limited after PV/SMV resection. In this study, we evaluate the effect of PV/SMV resection. METHODS: Between 1992 and 1998, there were 215 consecutive patients who underwent PD for malignant disease. Thirty-four patients underwent a PV/SMV resection. Resection was only performed when minimal venous ingrowth was found perioperatively. Surgical techniques, perioperative parameters, and survival were analyzed. RESULTS: The percentage of PV/SMV resections was 16%. Extensive (segment) resections were performed in 6 patients. The median blood loss was 1.8 L and resection margins were microscopically tumor free in 41% of the patients. The median hospital stay was 15 days, and mortality was 0%. Median survival after PV/SMV resection for pancreatic adenocarcinoma was 14 months. CONCLUSIONS: Limited PV/SMV resection for perioperatively encountered minimal venous ingrowth during PD can be performed safely without increased morbidity and mortality but also results in a high frequency of tumor-positive resection margins.     

Operative management and outcome of 302 abdominal vascular injuries

BACKGROUND: Abdominal vascular injuries incur high mortality rates. The purposes of this study are (1) review institutional experience, (2) determine additive effect on mortality of multiple vessel injuries, (3) determine mortality of combined arterial and venous injuries, and (4) correlate mortality with American Association for the Surgery of Trauma-Organ Injury Scale (AAST-OIS) for abdominal vascular injury. METHODS: A retrospective 6-year study was made at an urban level I trauma center of patients with abdominal vascular injuries. Main outcome measure was survival. RESULTS: (1) There was a total of 302 patients, mean age 28, mean Injury Severity Score (ISS) 25 (range 4 to 75). Mechanism of injury was penetrating in 266 (88%), blunt in 36 (12%). Emergency Department thoracotomy was done in 43 of 302 (14%), 504 vessels were injured: arteries 238(47%), veins 266(53%). Surgical management was ligation 245, primary repair 141, prosthetic interposition grafts 24, autogenous 2. Overall mortality was 162 of 302 (54%). (2) Mortality multiple vessels injured: 1 vessel 160 (45%), 2 vessels 102 (60%), 3 vessels 33 (73%), >4 vessels 5 (100%). Mortality arterial injuries: aorta isolated (I) 78% versus combined with other arterial injuries (C) 82.4%, superior mesenteric artery (SMA) I 47.6% versus C 71.4%, iliac I 53% versus C 72.7%, renal I 37.5% versus C 66.7%. Venous injuries: inferior vena cava (IVC) isolated (I) 70% versus combined with other venous injuries (C) 77.7%, superior mesenteric vein (SMV) I 52.7% versus C 65%, IMV I 16% versus C 50%. (3) Specific mortality combined arterial and venous injuries: aorta plus IVC 93%, SMA plus SMV 43%, iliac artery plus vein 45.5%. (4) Mortality versus AAST-OIS: grade II 25%, grade III 32%, grade IV 65%, grade V 88%. CONCLUSION: Abdominal vascular injuries are highly lethal. Multiple arterial and venous injuries increase mortality. Mortality correlates with AAST-OIS for abdominal vascular injury.     

The role of associated injuries on outcome of blunt trauma patients sustaining pelvic fractures

In order to identify the prognostic factors and to evaluate the impact of associated injuries in the outcome of patients with pelvic fractures, a retrospective review of the medical records of patients admitted with a pelvic fracture during a 42-month period was carried out. Demographic data, the mechanism of injury, the physiologic status on admission, associated injuries, pelvic fracture classification, complications and mortality were analysed. One hundred and three patients were included in the study. Fifty-nine were male, and the mean age was 34. The mean Revised Trauma Score (RTS) and Injury Severity Score (ISS) were 7.1 and 20, respectively. Pedestrian vs vehicle (59%), was the most frequent mechanism of injury. Twenty patients died (19%) most frequently due to "shock". Complications developed in 37 patients (36%), pneumonia being the most frequent. Age greater than 40 years (p=0.02), "shock" upon admission (p=0.002), a Glasgow Coma Scale (GCS)<9, Head AIS>2 (p<0. 001), Chest AIS>2 (p=0.007), and abdominal AIS>2 (p=0.03) all correlated with increased mortality. No correlation between pelvic fracture classification or fracture stability with mortality was observed. The outcome of patients with pelvic fractures due to blunt trauma correlates with the severity of associated injuries and physiological derangement on admission rather than with characteristics of or the type of fracture.     

Early Vein Reconstruction and Right-to-Left Dissection for Left-Sided Pancreatic Tumors with Portal Vein Occlusion

Large left-sided pancreatic tumors are frequently associated with portal vein (PV) and/or superior mesenteric vein (SMV) occlusion. Traditionally, vein reconstruction is deferred until after removal of the tumor. However, division of venous collaterals, as is done in a typical left-to-right fashion, leads to progressive portal hypertension and increased risk of variceal hemorrhage during the dissection. Conversely, early PV/SMV resection and reconstruction restores mesenteric-portal flow and decompresses varices, thereby enabling a safer and easier right-to-left pancreatic resection. This “How I Do It” report describes the technique and advantages of a “reconstruction-first” approach for large left-sided pancreatic tumors with venous involvement and left-sided portal hypertension.     

Prevalence of chest trauma, associated injuries and mortality: a level I trauma centre experience

A review of prospectively collected data in our trauma unit for the years 1998–2003 was undertaken. Adult patients who suffered multiple trauma with an Injury Severity Score (ISS) of ≥16, admitted to hospital for more than 72 hours and with sustained blunt chest injuries were included in the study. Demographic details including pre-hospital care, trauma history, admission vital signs, blood transfusions, details of injuries and their abbreviated injury scores (AIS), operations, length of intensive care unit and hospital stays, Injury Severity Score (ISS) and mortality were analysed. Fulfilling the inclusion criteria with at least one chest injury were 1,164 patients. The overall mortality reached 18.7%. As expected, patients in the higher AIS groups had both a higher overall ISS and mortality rate with one significant exception; patients with minor chest injuries (AIS_chest = 1) were associated with mortality comparable to injuries involving an AIS_chest = 3. Additionally, the vast majority of polytraumatised patients with an AIS_chest = 1 died in ICU sooner than patients of groups 2–5.     

Indication for the use of an interposed graft during portal vein and/or superior mesenteric vein reconstruction in pancreatic resection based on perioperative outcomes

Purpose

Combined portal vein and/or superior mesenteric vein (PV/SMV) resection with pancreatic resection sometimes leads to prolonged survival for patients with pancreatic cancer. In this study, we evaluated perioperative outcomes of patients with PV/SMV reconstruction and considered indications for the use of a graft during this procedure.

Methods

We performed PV/SMV resection with pancreatic resection in 128 patients, including 14 using grafts. Complications associated with PV/SMV reconstruction and harvesting venous grafts and reconstructed PV/SMV patency during follow-up were assessed.

Results

Of the 128 patients, 5 underwent total pancreatectomy, 99 pancreaticoduodenectomy, and 24 distal pancreatectomy. In the 14 patients who underwent PV/SMV reconstruction with grafts, the grafts were harvested from the external iliac vein (EIV) in 10 patients and internal jugular vein (IJV) in the other 4. Five patients (3.9 %) had an intraoperative or postoperative acute thrombus or stenosis of reconstructed PV/SMV after direct end-to-end anastomosis. However, PV/SMV patency was excellent after reconstruction using grafts. There were no significant differences in other complications between groups with and without the use of grafts. Three patients (30 %) with EIV grafts had postoperative leg edema, and one of them required analgesics until his death because of leg pain caused by compartment syndrome, whereas no patients with IJV grafts had complications associated with sacrificing veins.

Conclusions

Depending on the length and/or position of the removed PV/SMV segment, interposed graft may be required for reconstruction in some patients, and the use of graft vein, particularly using IJV, is an appropriate procedure that is not associated with any complications.     

肝移植中门静脉-内脏曲张静脉吻合在门静脉机化血栓患者的应用

目的:探讨门静脉-内脏曲张静脉吻合在门静脉机化血栓患者肝移植中的应用。方法:对门静脉和肠系膜上静脉均完全被机化血栓阻塞的7例患者实施肝移植,其中3例供体门静脉-曲张冠状静脉吻合;2例髂静脉搭桥供体门静脉和脾门旁曲张的静脉吻合;1例采用供体门静脉-胆总管前曲张静脉吻合;1例供体门静脉—曲张的胃网膜右静脉吻合。结果:7例手术全部成功。1例术后7d死于多脏器功能衰竭,但是门静脉血流一直通畅。1例术后6个月发现吻合口狭窄,术后9个月采用经皮肝穿刺门静脉支架置入治愈;其余患者分别随访12～22个月,门静脉血流均通畅,无狭窄或血栓形成,肝、肾功能正常。结论:肝移植中对门静脉和肠系膜上静脉均完全被机化血栓阻塞的患者,行供体门静脉-曲张内脏静脉吻合可取得良好疗效。     

Portal venous system injuries

Traumatic injuries of the portal venous circulation occur infrequently but often pose management problems. During the past 13 years, 94 patients have been treated at the Ben Taub General Hospital for traumatic injury to the portal venous system, including 37 portal, 45 superior mesenteric, seven splenic, and nine inferior mesenteric venous injuries. Injury resulted from penetrating wounds in all but 17 patients. Associated vascular injuries were present in 80 patients. Twenty-six patients died from failure to control hemorrhage. Six deaths resulted from postoperative complications. Operative approach necessitated lateral venorrhaphy in 66 patients, ligation in 23, end-to-end anastomosis in one, saphenous vein mesocaval shunt in two, end-to-side portacaval shunt in one, and clamping and packing in five. In spite of numerous associated vascular and visceral injuries, portal venous injuries can be successfully managed utilizing generally available vascular reconstructive techniques.     

Living donor liver transplantation for the patients with portal vein thrombosis: use of an interpositional venous graft passed posteriorly to the pancreatic parenchyma without using jump graft

Background

It is difficult to reconstruct the portal vein (PV) using a long interpositional venous graft in living donor liver transplant (LDLT) patients with portal vein thrombosis (PVT), which involves the confluence of the superior mesenteric vein (SMV) and splenic vein (SV). We successfully performed LDLT for three patients with PVT using an interpositional vascular conduit passing posterior to the pancreas without a jump graft.

Methods

Three of 130 patients who underwent LDLT in our hospital between March 2002 and June 2011 required this technique. After indentifying the location of the SMV, SV and gastrocolic trunk, we ligated and cut the posterior superior pancreaticoduodenal vein and other short branches from the PV. The PV was drawn inferiorly to the pancreas and transected at the confluence of SMV and SV. The external iliac vein or internal jugular vein was sacrificed as a graft for anastomosis to the cut end of the SMV using 6-0 polypropylene running sutures. Then the venous graft was drawn superiorly to the pancreas by passing it posterior to the pancreas parenchyma for anastomosis to the liver graft PV. The interpositional vein was placed posterior to the pancreas where the PV used to be.

Results

All three patients displayed favorable postoperative courses with the Doppler ultrasound demonstrating good portal flow perioperatively. The postoperative portogram demonstrated patency of the vascular graft.

Conclusion

This method is easy and helpful to treat portal vein thrombosis, by providing the shortest route between the PV of the donor and the SMV of the recipient.     

Analysis of chest injuries sustained during the 1999 Marmara earthquake

Purpose: The chest injury pattern after a major earthquake is not well understood because data on the type of trauma and surgical intervention are limited. This study was conducted to analyze patients who sustained chest injury during the Marmara earthquake that struck Turkey on August 17, 1999 registering 7.4 on the Richter scale. Methods: The medical reports of 528 patients transported to a military hospital in the first 48 h after the earthquake were reviewed. Two chest surgeons examined these 528 patients, 19 of whom (4%) had suffered a major chest injury. We retrospectively evaluated the injury pattern, Abbreviated Injury Score (AIS), and Injury Severity Score (ISS) in these 19 patients. Results: Eight patients (42%) had isolated chest injuries and 11 (58%) had suffered injury to more than one organ system, including chest trauma. The mean AIS and ISS were assigned as 2.9 (SD: 1) and 22 (SD: 7), respectively. Three (16%) of the 19 patients died, all of whom had suffered multiple injuries. The mean ISS of these three patients was 28.7 (range 25–34). Chest injury after a major earthquake was associated with an overall mortality rate of 16%, but chest injury with multiple injuries and an ISS over 25 was associated with a mortality rate of 60%. All patients with isolated chest injuries survived. Conclusion: Coexistent trauma with chest injury and an ISS over 25 were defined as poor prognostic factors for patients rescued after a major earthquake. Received: April 16, 2001 / Accepted: March 5, 2002     

Isolated Superior Mesenteric Vein Injury from Blunt Abdominal Trauma: Report of a Case

Solitary injury of the superior mesenteric vein (SMV) after blunt abdominal trauma is a rare but frequently fatal injury. A 63-year-old man was admitted to our hospital after falling on his right side from a height of 5 m. Computed tomography (CT) showed blood in the peritoneal cavity, but no liver or spleen injury. Emergency laparotomy revealed complete disruption of the SMV across the site of confluence with the splenic vein. We performed primary reconstruction by connecting both ends of the vein as an end-to-end anastomosis. Following restoration of gastrointestinal passage the patient was discharged in good health. At his 6-month follow-up, angio-CT showed an unobstructed SMV and portal vein. There was slight stenosis at the site of the suture and no sign of development of collateral venous circulation into the liver. This case report shows that primary repair of an SMV injury can be done in a stable patient without concomitant life-threatening injuries once proximal and distal control of bleeding has been achieved. Ligation should be reserved for patients with multiple injuries and an unstable condition.     

胰腺癌扩大根治术中的血管处理

目的 探讨联合门静脉-肠系膜上静脉切除的胰腺癌扩大根治术的临床意义和手术方法 ,以及术中医源性血管损伤的处理方法 .方法 回顾性分析242例胰腺癌扩大根治术患者临床资料,所有患者分为三组,A组为门静脉/肠系膜上静脉切除组(n=51),B组为术中发生医源性血管损伤组(n=5),C组为未行血管处理组(n=186),比较三个组的手术时间、术中输血量、血管阻断时间、平均住院天数、术后并发症及术后生存分析.结果 三个组手术时间分别为(442.85±102.32)min、(348.62±92.31)min和(315.00±83.43)min,术中平均输血量为(1430.83±1092.43)ml、(1420.22±794.41 ml)和(928.19±571.57)ml,手术时间和术中输血量相比差异有统计学意义(P<0.05),平均住院天数、术后并发症发生率差异无统计学意义(P 0.05).合并门静脉/肠系膜上静脉切除的胰腺腺癌患者术后中位生存期18.4个月,不合并门静脉/肠系膜上静脉切除组的胰腺腺癌患者术后中位生存期16.1个月,生存分析两者无明显差异(P 0.05).51例联合血管切除的患者中,行血管壁部分切除7例,行血管节段切除44例,44例血管节段切除患者中38例行端端吻合,6例行间置移植物,血管切除长度平均(2.92±1.35)cm;5例术中医源性动脉损伤的血管分别为肝动脉1例,肠系膜上动脉1例,腹腔干3例,处理方式为4例行端端吻合,1例行局部修补.结论 积极合理的开展联合门静脉/肠系膜上静脉切除的胰腺癌扩大根治术可以提高手术切除率,改善患者生活质量.由于局部的解剖关系复杂,术中较易发生医源性血管损伤,应引起术者重视并加以正确处理.     

Statistical analysis of fatal bleeding pelvic fracture patients with severe associated injuries

Background Bleeding pelvic fracture patients with severe associated injuries have a high mortality rate that is exacerbated by several factors. To gain deeper etiological insights into this injury, we investigated the specific risk factors associated with the high mortality rate. Methods A total of 102 bleeding pelvic fracture patients with severe associated injuries (abbreviated injury score ≥3) were treated at our level I trauma center between January 1994 and December 2004. Predictors of death within 24 h of arrival were determined by univariate and multivariate analyses using anatomic and physiologic parameters, including injured body part, shock symptoms, age, sex, injury severity score (ISS), and fracture type. Results Overall, 47 of the 102 patients died within 24 h of arrival. Hemorrhage shock was responsible for the majority of deaths (47%). Other causes included central nervous system injury (21%), multiple injuries (central nervous system injury plus shock, 18%) and multiple organ failures (7%). Univariate analyses revealed that patients presenting with head and neck injuries and shock symptoms on arrival were associated with an increased risk of death (P < 0.01 for both variables). Multivariate analyses revealed that these injuries and shock symptoms were independently associated with a higher risk of death (odds ratios of 2.704 and 4.632, respectively). The mechanism of injury, fracture type, age, sex, and ISS were not associated with an increased risk of death. Conclusions Statistically significant risk factors were brain injuries and shock symptoms on arrival. Brain injuries should be heavily weighted when evaluating the prognosis of bleeding pelvic fracture patients.     

门静脉节段切除治疗进展期胰腺癌

目的 研究侵犯门静脉（PV）的胰腺癌的切除方法及治疗效果。方法 对22例胰腺癌患者在施行胰十二指肠切除或胰体尾部切除时清扫区域淋巴结，并联合切除受侵犯的一段PV或肠系膜上静脉（SMV）。结果 行PV或SMV楔形切除修补者6例，节段切除者8例，其中5例行端端吻合，2例行自体大隐静脉移植，1例行肠系膜上静脉下腔静脉转流。平均手术时间7.，平均术中输血600ml，无围手术期死亡。22例患者全部得到随访，存活6个月1例，12个月3例，18个月6例，24个月8例，36个月4例。结信纸 侵犯PV和（或）SMV的胰腺癌切除加广泛淋巴清扫是安全可行的，且能延长患者的生存期。     

Iliac vein injuries in hemodynamically unstable patients with pelvic fracture caused by blunt trauma

BACKGROUND: Major pelvic venous injuries secondary to blunt trauma can be a difficult problem in diagnosis and management. This study aimed to elucidate the clinical significance of iliac vein injuries demonstrated by venography in patients with blunt pelvic injuries who remained unstable even after transcatheter arterial embolization (TAE). METHODS: We reviewed the records of 72 patients with unstable pelvic fracture who presented with shock at our center after blunt trauma from 1999 through 2003. The average Injury Severity Score was 34.3 in this study population. RESULTS: TAE was the first method of choice to control bleeding from pelvic fracture in 61 patients. Thirty-six patients recovered from shock after TAE. Eighteen of 25 who did not recover from shock died. In 11 of these 25, transfemoral venography with a balloon catheter was performed, revealing significant venous extravasation in 9: common iliac vein in 5, internal iliac vein in 3, and external iliac vein in 1. The average Injury Severity Score of patients with iliac vein injury was 45.8. Treatments for venous injuries were laparotomy for hemostasis (n = 1, survivors = 0), retroperitoneal gauze packing (n = 3, survivors = 1), and endovascular stent placement (n = 3, survivors = 3). Two patients suffered from cardiac arrest before treatment for venous injury. External fixations were performed after TAE according to fracture type. CONCLUSION: The iliac vein injury is the principal cause of hemorrhagic shock in some patients with unstable pelvic fractures after blunt trauma. Venography is useful for identifying iliac vein injuries.