ObjectiveTo investigate the risk factors of postoperative portal vein thrombosis (PVT) after devascu-larization in patients with cirrhotic portal hypertension. MethodsThe clinical data of 40 patients with cirrhotic portal hypertension treated with splenectomy and gastric pericardial devascularization were retrospectively analyzed to investigate the related risk factors. ResultsA total of 12 of the 40 patients suffered from PVT (30.00%). The results of multivariate analysis showed that portal vein diameter, postoperative portal vein velocity, platelet count at 2 weeks postoperatively, and postoperative portal vein pressure were the factors influencing the incidence of PVT after devascularization. Patients with the greater portal vein diameter and platelet count at 2 weeks postoperatively, the lower postoperative portal vein velocity and postoperative portal vein pressure, had higher ratio of PVT (P < 0.05). ConclusionPortal vein diameter, portal vein blood flow velocity, platelet count, and postoperative portal vein pressure were the main risk factors for PVT after surgery in patients with cirrhotic portal hypertension.
Anatomical venous distribution around the lower esophagus, gastric cardia and fundus in 100 adult cadavers had been observed. The results showed that the occurrence rate of the left gastric and the right gastric veins were 96% and 92% respectively. Venous distribution in the lesser curvature of the stomach can be classified into five types: the left gastric vein type, the right gastric vein type,the left gastric vein dominant type, the right gastric vein dominant type, and the balance type (of the left and the right gastric veins). The retrogastric veins were found in 73.6% of 100 cadavers showed portacaval anastomoses. From March 1976 to March 1992, we had treated with transthoracic interruption of portoazygous circulation, 52 cases of portal hypertension resulting in bleeding du to rupture of esophageal and venriculi fundus varices ( male 43, female 9). Among the 41 emergency operations, 2 cases died (4.9%), and bleedings were controlled by emergency surgery in 92.6% of cases. 44 of the 50 cases (88%) were followed up. The recurrence of bleeding occured in 5 cases, with a long-term bleeding rate of 11.4%. The authors suggest that anatomical factors might be the reason of inadequacy of portaoazygous interruption, and claim the advantages of transthoracic interruption of portoazygous circulation.
Objective To evaluate the effect of triplex operations (splenopneumopexy, portal azygous devascularization and ligation of splenic artery) for children with extrahepatic portal hypertension. Methods From March 1993 to November 1998, 7 children with extrahepatic portal hypertension underwent triplexoperations. The diagnosis for these patients were confirmed by gastroscopy, barium meal and Doppler ultrasonography. The number of WBCand platelet and the hepatic function were checked before and after operations.And the free portal pressures were checked before and after ligations of the splenic artery. All patients were followed up for 2 to 8 years (5.6 years on average). The episodes of upper gastrointestinal bleeding were recorded. The degrees of varices of distal esophagus and proximal stomach were assessed by barium mealand gastroscopy. The diameters of the splenic and portal veins were obtained byBultrasound. The portopulmonary shunt and portal blood flow were evaluated by color Doppler flow image. The indices of hemorheology such as hematocrit, viscosity of whole blood and plasma, and the index of deformability and aggregability of RBC were obtained through viscometer (R-20 Seerle, Beijing). Results There was no operative fatal case in this group. Postoperatively, hemorrhage from the esophagus and gastric varices was completely controlled. Although the diameter of spleen reduced progressively, no patient’s spleen recovered to normal size during the follow up period. The degree of varices was mitigated and the free portal pressure was significantly decreased to （34.48±5.71） cm H2 O from the preoperative one （42.62±6.72） cm H2 O (P＜0.05). The rate of portal flow was alsodecreased. The direction of portal vein was bidirection (one part was away from the liver and the other was toward the liver). The number of WBC and platelet and the viscosity of whole blood and hematocrit were increased to normal value after operation. Conclusion The triplex operation is an effective procedure for the control of hemorrhage from varices in children with extrahepatic portal hypertension.
目的 探讨门静脉高压症断流术后上消化道再出血的原因及防治措施。方法 对近8年解放军第302医院肝胆外科收治的因门静脉高压症行脾切除、贲门周围血管离断术后发生上消化道再出血的15例患者的临床资料进行回顾性分析。结果 15例术后消化道再次出血患者中，因急性胃黏膜病变出血9例，残留食管胃底曲张静脉再次破裂大出血5例，围手术期门静脉、脾静脉及肠系膜上静脉血栓形成并呕血1例。围手术期再出血并死亡2例，通过保守或手术治疗治愈13例。结论 断流术是治疗门静脉高压症引起上消化道大出血的良好术式，术后再出血是断流术后常见并发症之一，完善的手术操作、适时祛聚抗凝减少门静脉系统血栓形成可减少断流术后再出血的发生或减轻其症状
Objective To evaluate the effects of combined splenorenal shunt with portoazygos devascularization for portal hypertension. MethodsA retrospective analysis of the clinical data of combined splenorenal shunt with portoazygos devascularization for portal hypertension in 58 cases was made. They were 41 male, 17 female and average age was 42.5 and posthepatitic liver cirrhosis in 51 cases, schistosomiasis cirrhosis in 7 cases, and Child A in 26 cases, B in 28, C in 4. There was selective operation in 39 cases (Child A 20, Child B 18, Child C 1), early operation in 10 (Child A 3, Child B 6, Child C 1) and emergency operation in 9 (Child A 3, Child B 4, Child C 2).ResultsAll but two (3.4%) Child C cases died after emergency operation, the others recovered. Esophagus varicoses disappeared or had a great improvement in all cases. There were liver function damage with different degree in 19 cases and subdiaphramatic effusion or infection or pleural effusion in 23 and all were cured by conservative therapy. Followed up for 5-10 years in 48 cases, there were rebleeding in 2 cases (3.5%) and postmeal encephalopathy in 2 (3.5%).ConclusionCombined splenorenal shunt and portoazygos devascularization are the first choice for portal hypertension at present.
To investigate the change of the portal venous pressure (PVP), conjugated glycocholic acid (CGA) and pancreatic glucagon (PG) concentration in rats peripheral and portal venous blood in the course of experimental liver cirrhosis induced with carbon tetrachloride and to investigate the mentioned changes after portalazygous devascularization. The authors found that in the early stage of cirrhosis the PVP and the concentration of CGA and PG in peripheral venous blood were increased markedly, CGA in portal vein was decreased and PG in portal vein was increased in early stage of liver cirrhosis.With the extent of liver cirrhosis the indexes above changed more markedly. After portalazygous devascularization the concentration of CGA in peripheral vein in the cirrhotic rats was increased but PVP, the concentration of CGA in portal vein and PG in peripheral and portal vein did not change.There was no change in nornal rats. The results suggest that the variation in CGA in peripheral vein can accurately reflect the degree of damage to liver cells, thus making the diagnosis of liver cirrhosis earlier and judging the degree and prognosis of liver cirrhosis.The concentration of PG in portal venous and peripheral vein relate to PVP in liver cirrhosis.Portalazygous devascularization can maintain PVP and PG in portal vein and do not affect liver function of the control rats but it can damage liver cell in cirrhotic rats.
In the treatment of portal hypertension, association of both hassab operation and splenorenal shunt was performed selectively on six cases by authors from 1987 to 1994, and better results were obtatined in five patients. In this article, the experience and operative Techniques are introduced in detail, and he advantages of this procedure are evaluated.