ObjectiveTo discuss the current status and progress of delayed gastric emptying (DGE) after pancreaticoduodenectomy (PD).MethodThe related researches about DGE after PD in recent year were searched and reviewed.ResultsThe etiology and pathogenesis of DGE had not yet been fully elucidated. There were various risk factors, such as the surgical trauma, advanced age, diabetes, and with other abdominal complications. The pylorus preserving PD didn’t increase the risk of DGE. The pylorus ring resection, anterior colon, Braun anastomosis, and minimally invasive surgery were beneficial for reducing DGE. Although there was no obvious progress in the treatment of DGE at home and abroad, the majority of patients could be cured by the symptomatic conservative treatment.ConclusionsPrevention is a main strategy for DGE after PD. Application of enhanced recovery after surgery might be a key to solve problem in clinical, but further research is needed.
ObjectiveTo investigate the application of imbedding pancreaticojejunostomy in pure laparoscopic pancreaticoduodenectomy. MethodsEighty-five cases of laparoscopic pancreaticoduodenectomy in our hospital from May 2014 to December 2015 were analyzed retrospectively. According with inclusion criteria and exclusion criteria, 78 cases were investigated. They were divided into pancreatic duct-to-jejunum mucosa pancreaticojejunostomy group as controlled group (n=42) and imbedding pancreaticojejunostomy (technique of duct-to-mucosa PJ with transpancreatic interlocking mattress sutures) group as modified group (n=36). The rates of pancreatic fistula, abdominal infection/abscess, bile leakage, delayed gastric emptying, gastrointestinal/intraabdominal hemorrhage, pulmonary infection, and incision infection were investigated as well as hospital stays and pancreaticojejunostomy time in two groups were compared. ResultsThe rate of pancreatic fistula especially B to C grade pancreatic fistula in the modified group was obviously lower compared with which in the controlled group (8.3% vs. 31.0%, P < 0.05), pancreaticojejunostomy time ofmodified group was significantly shortened [(35.6±12.4) min vs. (52.8±24.6) min, P < 0.05] and total operative time also shortened [(322.4±23.6) min vs. (384.2±30.2) min, P < 0.05). There were no significant difference of the rates of abdominal infection/abscess, bile leakage, delayed gastric emptying, gastrointestinal/intraabdominal hemorrhage, pulmonary infection, ?incision infection, and hospital stays (P > 0.05)]. Conciusions The type of pancreaticojejunostomy has a significant impact on the rate of pancreatic fistula after laparoscopic pancreaticoduodenectomy. Imbedding pancreaticojejunostomy can decrease the rate of pancreatic fistula after operation, and shorten the pancreaticojejunostomy time and total operative time.
Objective To explore the feasibility of clinical application of hepatic artery （HA） or proper hepatic artery （PHA） anastomosing with superior mesenteric artery （SMA） and internal iliac vein （IIV） anastomosing with superior mesenteric vein （SMV） or portal vein （PV） in the extended pancreaticoduodenectomy combined with vascular resection．Methods The HA，PHA，SMA， SMV， PV， and IIV were dissected on 20 adult corpses， and the length， thickness，and lumen diameter of blood vessels were measured and compared with the results of multislice spiral CT scan，magnetic resonance angiography，or color Doppler in 25 patients with pancreatic head carcinoma．The extended pancreaticoduodenectomy was carried out on 5 patients of pancreatic head carcinoma with vascular invasion according to the mathcing results，and the reconstructions of HA or PHA with SMA and IIV with SMV or PV were performed．Results According to autopsy，HA-PHA was （5.50±1.50） cm in length，（0.20±0.01） mm in thickness，（5.02±1.32） mm in lumen diameter；and SMA was （4.00±1.00） cm in length，（0.21±0.01） mm in thickness，（6.05±1.06） mm in lumen diameter．The lumen diameter of left IIV，right IIV，and PV or SMV was （11.06±0.16） mm，（11.10±0.13） mm，and （11.56±0.20） mm，respectively．The thickness of left IIV，right IIV，and PV or SMV was （0.10±0.01） mm，（0.10±0.02） mm，and （0.10±0.02） mm，respectively．The multislice spiral CT scan，magnetic resonance angiography，color Doppler，and selective arteriography in vivo showed that the thickness and lumen diameter of HA-PHA and SMA were wider （0.1 mm and 0.3 mm） than those of the autopsy results，and there were no statistic significances （P＞0.05），but the length of HA-PHA was longer （1－2 cm） than that of SMA，and there was statistic significance （P＜0.05）. The survival of 5 patients with extended pancreaticoduodenectomy combined with PHA or SMA and IIV-PV/SMV resection and reconstruction was longer than that of palliative surgery patients or giving-up patients at the same period，and no long-term complications occurred．Conclusions The vascular invasion of pancreatic head carcinoma is not an absolute contraindication of radical pancreaticoduodenectomy．The survival of 5 patients with vascular invasion of pancreatic head carcinoma in this group is prolonged by extended pancreaticoduodenectomy combined with vascular resection and reconstruction as compared with palliative surgery group at the same period．HA，PHA，and IIV are the best autologous vascular alternative materials without more complications． Being familiar with regional anatomy will guide the surgeons in extended pancreaticoduodenectomy.
Objective To analyze the effect of inner diameter of pancreatic duct following pancreaticoduodenectomy on pancreatic fistula. Methods From January 1995 to December 2008, 256 patients underwent pancreaticoduodenectomy were divided into four groups based on the types of pancreaticojejunostomy: end-to-side “mucosa-to-mucosa” anastomosis group (n=115), end-to-end “mucosa-to-mucosa” anastomosis group (n=71), end-to-end invaginated pancreaticojejunostomy group (n=43) and pancreaticogastrostomy group (n=27). Alternatively, 238 patients were divided into two groups according to drainage ways: stenting tube for internal drainage group (n=132) and stenting tube for external drainage group (n=106). Furthermore, 233 cases were divided into three groups on the basis of inner diameter of pancreatic duct: ≤0.2 cm group (n=54), 0.2-0.4 cm group (n=93) and ≥0.4 cm group (n=76). Then, the incidence rate of pancreatic fistula of each group was compared. Results The incidence of pancreatic fistula was 8.20% (21/256). The incidence of pancreatic fistula for different types of pancreaticojejunostomy was as follow: end-to-side “mucosa-to-mucosa” anastomosis group (7.83%， 9/115), end-to-end “mucosa-to-mucosa” anastomosis group (7.04%, 5/71), end-to-end pancreaticogastrostomy invaginated group (13.95%, 6/43) and pancreaticogastrostomy group (3.70%, 1/27), in which there wasn’t significant difference in 4 groups （χ2=2.763，P=0.430）. There was no significant difference of the incidence of pancreatic fistula between stenting tube for internal drainage group (9.10%, 12/132) and stenting tube for external drainage group (8.49%, 9/106), χ2=0.126, P=0.722. The incidence of pancreatic fistula in ≥0.4 cm group, 0.2-0.4 cm group and ≤0.2 cm group was respectively 0, 15.05% (14/93) and 11.11%(6/54), and the difference was significant (χ2=12.009, P=0.002). No correlation was found between the incidence of pancreatic fistula of different inner diameter of pancreatic duct and the types of pancreaticojejunostomy (χ2=1.878， P=0.598). Conclusion The inner diameter of pancreatic duct is an important factor for postoperative pancreatic fistula. No relationship is found between the types of pancreaticojejunostomy and pancreatic fistula in this study.
【Abstract】 Objective To investigate the origin, prevention and treatment of postoperative complications and death rate after pancreaticoduodenectomy （PD）. Methods Retrospective study on the clinical materials of complications and death rate was done on 106 cases of PD performed in our hospital during July 1985 to December 2002. Results In this group, 37 cases (34.91%) had postoperative complications, and the incidence rate of severe complications was 19.81% (21/106), the death rate was 10.38% (11/106). Compared between the two groups with preoperative bilirubin gt;342 μmol/L and ≤342 μmol/L, the incidence of total complications increased evidently (P＜0.05), and the bleeding amount，infusion amount and operation time in those with complications or dead ones were evidently higher than those without complications (P＜0.05). Conclusion The safty and resectability of PD has improved evidently in recent years but good skills, careful operation, the experience of the operatior and careful perioperative treatment and nursing are of crucial importance to reduce the complications and death rate.
ObjectiveTo investigate the clinical effect of “Double R” pancreatojejunostomy in laparoscopic pancreaticoduodenectomy (LPD).MethodsThe clinical data of 20 patients underwent “Double R” pancreaticojejunostomy in the LPD from November 2018 to December 2019 in this hospital were collected retrospectively. The duration of pancreaticojejunostomy, incidence of postoperative pancreatic fistula, incidence of other complications, mortality, length of stay, and other clinical outcomes were analyzed.ResultsThere were 5 males and 6 females. The age was (56±10) years old. The body mass index was (22.6±4.4) kg/m2. The LPDs were successfully performed in all 20 patients, no patient transferred to the laparotomy, and no patient died within 30 d. There were 6 patients with papillary adenocarcinoma of the duodenum, 5 patients with adenocarcinoma of the lower part of the common bile duct, 2 patients with adenocarcinoma of the pancreatic duct, 3 patients with serous cystadenoma of the pancreatic head, 2 patients with intraductal papillary myxoma of the main pancreatic duct of the pancreatic head, 1 patient with duodenal adenoma with high grade intraepithelial neoplasia, 1 patient with metastatic renal clear cell carcinoma of the pancreatic head, 5 patients with soft pancreas, 12 patients with medium texture, 3 patients with hard texture. The diameter of distal pancreatic duct was (2.1±1.7) mm. The operative time was (380±69) min, the duration of pancreaticojejunostomy was (29±15) min, the intraoperative blood loss was (180±150) mL, the postoperative time of anal exhaust (2.2±0.8) d, postoperative time of fluid intake (3.5±1.1) d, postoperative time of half fluid intake (5.5±0.7) d, postoperative time of hospitalization (14±10) d. There were 3 complications in 2 patients, one of which suffered the pulmonary infection, the other suffered the delayed gastric emptying and gastrointestinal anastomosis bleeding, no bile leakage and abdominal hemorrhage happened. There were 2 cases of pancreatic fistula after the operation, all of them were biochemical pancreatic fistula.Conclusions“Double R” pancreaticojejunostomy method has some advantages of convenient operation, short operation time, and low incidence of pancreatic fistula. However, due to the limited sample size, its safety and feasibility still need to be verified by larger samples and more institutions.
【Abstract】 Objective To investigate the preoperative and intraoperative evaluation and the operative methods of pancreaticoduodenectomy combined with resection of involved blood vessel. Methods The materials of 226 cases of carcinoma of head of pancreas, which were collected from January 2002 to June 2005, were assessed according to the T-grade evaluative method and were summarized into a more accurate method of preoperative and intraoperative evaluation and an operative method of the pancreaticoduodenectomy combined with vascular resection. The statistical analyses were performed by SAS 6.12 Stat software package with χ2 test for categorical data. Results The coincidence of every preoperative evaluations on pancreaticoduodenectomy with T-grade method were more than 85.00% and the accurate rate of evaluation on relationship between tumor and blood vessel was 80.97%. As the degree of T-grade increased, the proportion of requiring pancreaticoduodenectomy combined with vascular resection increased significantly as well (P＜0.001). All operations were smoothly done and the reconstruction of removed vascular took 12 to 46 minutes. The complication rate and the mortality rate of perioperative period were 19.61% and 1.96%, respectively. Conclusion With more practice, experience and the advanced imaging technology, it is possible for professional surgeon to evaluate more accurately on the pancreaticoduodenectomy combined with vascular resection by using the preoperative T-grade method. T-grade evaluative method is useful for operator to assess the indication accurately and to design the operative schedule reasonably. Accurate operational evaluation and careful operation are also important for pancreatoduodenectomy combined vascular resection.
ObjectiveTo explore the risk factors of intraabdominal complications (IACs), pancreatic fistula (PF), and operative death after pancreatoduodenectomy (PD), and to provide a theoretical basis in reducing the rates of them. MethodsClinical data of 78 patients who underwent standard PD surgery in The Third People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine from Jun. 2003 to Nov. 2011 were collected to analyze the influence factors of IACs, PF, and operative death. ResultsThere were 29 cases suffered IACs (13 cases of PF included), and 6 case died during 1 month after operation. Univariate analysis results showed that IACs and PF occurred more often in patients with soft friable pancreas, diameter of main pancreatic duct less than 3 mm, preoperative biliary drainage, no pancreatic duct stenting, and without employment of somatostatin (P < 0.05), no influence factor was found to be related to operative death. Multivariate analysis results showed that patients with no pancreatic duct stenting (OR=1.867, P=0.000), soft texture of remnant stump (OR=1.356, P=0.046), and diameter of main pancreatic duct less than 3 mm (OR=2.874, P=0.015) suffered more IACs; PF was more frequent in patient with no pancreatic duct stenting (OR=1.672, P=0.030), soft texture of remnant stump (OR=1.946, P=0.042), and diameter of main pancreatic duct less than 3 mm (OR=1.782, P=0.002);no independent factor was found to have relationship with operative death. ConclusionsSoft texture of remnant stump, diameter of main pancreatic duct less than 3 mm, and no pancreatic duct stenting are independent risk factors that should be considered in indications for PD surgery.
ObjectiveTo summarize the application status and prospect of laparoscopic pancreaticoduodenectomy (LPD).MethodThe relevant literatures about studies of LPD at home and abroad were reviewed.ResultsLPD was a difficult operation, mainly suitable for pancreatic head and periampullary benign and malignant tumors. With the development of laparoscopic techniques in recent years, LPD combined the superior mesenteric vein and portal vein resection and reconstruction, or combined multi-visceral resection was feasible, but the survival benefit of LPD with arterial resection and reconstruction and extended lymph node dissection remained to be discussed. At present, there was no clear requirement on the way to reconstruct the pancreatic fluid outflow tract, but the pancreaticojejunostomy for digestive tract reconstruction was chose by the most surgeons. The most studies had confirmed that LPD was minimally invasive and had a short-term prognosis that was not inferior to that of open pancreaticoduodenectomy. However, the results of large sample analysis about long-term survival rate and oncology results were lacking, so it was difficult to judge the advantages and disadvantages of long-term prognosis of the two methods.ConclusionsLPD is a safe, feasible, reasonable, and effective surgical method. With improvement of laparoscopic technology, LPD is expected to become a standard operation method for treatment of pancreatic head cancer and periampullary carcinoma, and oncology benefits of LPD will be further confirmed in future by large-sample clinical randomized control trials and studies of long-term prognosis follow-up.
ObjectiveTo evaluate efficacy and safety of early anticoagulation therapy with low molecular weight heparin (LMWH) in prevention of venous thromboembolism (VTE) after pancreatoduodenectomy (PD).MethodsThe patients who received PD in our hospital from January 2017 to December 2018 were collected retrospectively, then were divided into the anticoagulant group and the non-anticoagulant group. The operation time, intraoperative blood loss, tumor property, coagulation function indexes such as prothrombin time (PT), PT activity (PTA), fibrinogen (FIB), activated partial thromboplastin time (APTT), thrombin time (TT), and D-dimer (DD), platelet (PLT), VTE, bleeding related complications etc. were compared between the two groups.ResultsA total of 103 patients underwent PD were included in this study, including 52 patients in the anticoagulant group and 51 patients in the non-anticoagulant group. There were no significant differences in the baseline data such as the gender, age, and preoperative coagulation function indexes, etc. between the two groups (P>0.05). The incidence of VTE in the anticoagulant group was lower than that in the non-anticoagulant group (13.5% versus 47.1%, P<0.001). There was no significant difference in the incidence of bleeding between the anticoagulant group and the non-anticoagulant group (9.6% versus 7.8%, P>0.05). There were no statistically significant differences in the coagulation indexes between the two groups before operation and day 1 after operation (P>0.05). On day 8 after operation, the FIB and DD values of the anticoagulant group were significantly lower than those of the non-anticoagulant group (P values were 0.040 and 0.002, respectively). A comparison of different phases in the same group on coagulation indexes between day 8 and day 1 after surgery showed that there were statistically significant differences (P<0.05), the changes of all indexes were within the normal range.ConclusionThe results of this study indicate that LMWH administered at 24 h after PD could decrease incidence of VTE and don’t increase risk of bleeding.