A Blumgart-Anastomosis Based Half-Invagination Pancreaticoenterostomy With Better Applicability to Laparoscopy and Lower Incidence of Pancreatic Leakage

Background The Blumgart anastomosis has been established as one of the safest anastomoses for pancreas remnant reconstruction, with low rates of postoperative pancreatic fistula (POPF) and postoperative complications. However, how to make laparoscopic pancreaticoenterostomy easier and safer is still a subject to be discussed. Methods Data of patients undergoing laparoscopic pancreaticoduodenectomy from April 2014 to December 2019 were retrospectively analyzed. Results 20 cases of half-invagination anastomosis (Group HI) and 26 cases of Cattell-warren anastomosis (Group CW) were included. Intraoperative blood loss, Operative time and Postoperative drainage tube placement time of Group HI was significantly less than those of Group CW. Patients of Clavien-Dindo grade III and above in Group HI was significantly less than Control Group. Group Incidence of POPF in Group HI was significantly lower than that in Group CW. No high-risk group emerged during Fistula risk score analytical phase, and the highest risk of moderate-risk group was pancreatic leakage. Respectively, incidence of pancreatic leakage in Group HI and Group CW was 7.7% and 46.67%, while incidence of Group HI was significantly lower than that in the Group CW. Conclusions The Blumgart-anastomosis based half-invagination pancreaticoenterostomy with better applicability to laparoscopy can effectively reduce the incidence of postoperative pancreatic leakage.

Acute pancreatitis and low ascites-serum albumin gradient ascites caused by Brucellosis

Objective: Brucellosis is a zoonotic disease seen widely around the world. Although many aspects and treatment of this disease is well known, peritoneal involvement and ascites is not well established so far. Material and Methods: This study retrospectively enrolled 346 adult patients (aged >17 years) with acute Brucellosis attending Hepatology Clinic, Van Yuzuncu Yil University, between April 2013 and May 2016. Characteristics of those with and without ascites were analyzed using Pearson correlation coefficients and Chi-Square test in SPSS software system. Results: Of the 346 cases, 20 (5, 7%) had ascites. Those with ascites had significantly higher transaminase, cholestatic enzyme and amylase levels compared to those without ascites. Conclusions: We conclude that acute Brucella infection can lead to a unique low gradient ascites probably resulting from pancreatic leakage followed by peritoneal accumulation of serum proteins.

Distal Pancreatic Resection with Splenectomy in the Rat: A Pancreatic Fistula Model to Investigate Postsurgical Damage?

<b><i>Background:</i></b> Postoperative pancreatic fistula (POPF) is a major complication in pancreatic surgery and can cause considerable postoperative morbidity. Advanced surgical-technical approaches to prevent POPF did not yield a substantial improvement. To investigate innovative treatments, experimental animal models of distal pancreatic resection and pancreaticoduodenectomy are of fundamental importance. After a failed attempt to replicate a previously described rat model for pancreatic fistula induction, we proceeded to distal pancreatic resection with splenectomy to provoke pancreatic leakage and generate a suitable animal model. <b><i>Methods:</i></b> Distal pancreatic resection with splenectomy was performed in 40 rats. The rats were sacrificed on postoperative day (POD) 1, 2, 4, 6, 8, or 10, and the abdominal cavity was explored. Ascites probes were collected pre- and postoperatively for the detection of pancreas amylase and lipase. Tissue samples from the naïve pancreas (POD 0) and the postoperatively harvested remnant were evaluated histologically. The extent of necrosis was determined, and samples were examined for neutrophil infiltration. TUNEL staining served for the verification of necrosis in distinct cases. Immunohistochemistry of Ki67, von Willebrand factor, and CD68 was performed to evaluate proliferation, blood-vessel sprouting, and macrophage invasion. <b><i>Results:</i></b> The rats showed no clinical symptoms or severe complications in the postoperative course up to 10 days. Abdominal exploration revealed adhesions in the upper abdomen, but no intra-abdominal fluid accumulations were found. Signs of inflammation and tissue damage were evident at the pancreatic resection margin on histological examination whereas the naïve pancreatic tissue was widely unaffected. Statistically significant differences were seen between the preoperative and postoperative extent of necrosis, the presence of neutrophil infiltrate, and levels of ascitic amylase and lipase. Immunohistochemical staining on Ki67, von Willebrand factor, and CD68 did not reveal any workable results on nonstatistical examination, and it was therefore not considered for further analyses. <b><i>Conclusion:</i></b> Creating a functional animal model of pancreatic fistula that reflects the clinical and pathophysiological impact of pancreatic leakage in humans has not been achieved. Our approach of left pancreatic resection recapitulated inflammation and tissue damage, early events in the development of fistulas, and it could be suitable for the experimental testing of novel targeting methods.

Intentional internal drainage tube method for nonlocalized persistent pancreatic leakage: a case report

Background Persistent pancreatic leakage (PL) due to disconnected pancreatic duct syndrome (DPDS) is associated with severe morbidity and mortality and it usually treated with internal drainage. However, in cases without localized fistula formation, internal drainage is challenging to perform. We report an original one-stage surgical approach for nonlocalized persistent PL, namely, the “intentional internal drainage tube method”. Case presentation A 49-year-old woman whose main pancreatic duct was penetrated during endoscopic retrograde cholangiopancreatography experienced severe PL. Peritoneal lavage and a second operation involving central pancreatectomy failed to relieve the symptoms, and nonlocalized PL persisted due to DPDS. Although we attempted a radical resection of the pancreatic remnants as a third strategy, the highly inflamed tissue and massive bleeding prevented the completion of the procedure. We sutured the pancreatic head margin and performed a pancreaticojejunostomy to the distal margin. Because these two cut margins could possibly be the source of the persistent PL, we created a hole at the Roux-en-Y jejunal limb, and a silicone drainage tube was inserted into the peritoneal space via this hole. Postoperatively, we continuously suctioned the intentional internal drainage tube, and the residual PL cavity gradually diminished. Even after removal of the tube, the residual PL drained internally into the jejunum through this hole. Conclusions We present this intentional internal drainage tube method as a novel alternative approach for the management of nonlocalized PL consequential of DPDS. Due to the simplicity and minimally invasive nature of this method, we propose this technique may also be used to treat various types of nonlocalized persistent PL or be used prophylactically for central pancreatectomy.

Invaginated Duct to Mucosa Pancreaticojejunostomy Reduced Postoperative Pancreatic Leakage: A Matched Case-controlled Study

Background Postoperative pancreatic leakage was also the obstacle of pancreaticoduodenectomy (PD) which always followed the failure of pancreaticojejunostomy. Dozens of pancreaticojejunostomy had been reported. None showed superiority over others. To assess the potential advantages of invaginated duct to mucosa pancreaticojejunostomy (invaginated D-M PJ), we introduced this study.Methods Retrospectively analyzed the related data from the patients who had their pancreaticodedunostomy due to malignant tumor in The First Affiliated Hospital to Henan University of Science and Technology during January 2017 to August 2019. According to the different procedure of pancreaticojejunostomy, the patients divided into custom D-M group and invaginated D-M group. Sex, age, pancreatic duct size and pancreatic texture were matched. Pancreatic leakage and other complications were compared. SPSS 16.0 was employed for analysis.Results 48 pairs of patients were involved. Both groups had almost the same baseline characterisitics, such as Sex (P=1.000), Age (P=0.897), ASA (P=0.575), BMI (P=0.873), pancreatic duct size (P=0.932), pancreatic texture (P=1.000) and tumor origin (P=0.686). No statistical difference was observed relation to operation outcomes, such as operation time (P=0.632), pancreaticojejunostomy time (P=0.748), blood loss (P=0.617) and number of required transfusion (P=0.523). Pancreatic leakage was significantly declined for invaginated D-M group (P=0.005). The difference of other complications, such as, bleeding (P=0.617), biliary leakage (P=0.646), pneumonia (P=0.594) and thrombosis (P=0.714), didn’t reach statistical significance. Postoperative hospitalization was almost the same for both groups (P=0.764).Conclusions Invaginated D-M PJ could reduce pancreatic leakage followed PD. Invaginated D-M PJ should be a choice for the patients who had PD.

Invaginated Duct to Mucosa Pancreaticojejunostomy Reduced Pstoperative Pancreatic Leakage: A Matched Case-Controlled Study

Background Postoperative pancreatic leakage was also the obstacle of pancreaticoduodenectomy (PD) which always followed the failure of pancreaticojejunostomy. Dozens of pancreaticojejunostomy had been reported. None showed superiority over others. To assess the potential advantages of invaginated duct to mucosa pancreaticojejunostomy (invaginated D-M PJ), we introduced this study.Methods Retrospectively analyzed the related data from the patients who had their pancreaticodedunostomy due to malignant tumor in The First Affiliated Hospital to Henan University of Science and Technology during January 2017 to August 2019. According to the different procedure of pancreaticojejunostomy, the patients divided into custom D-M group and invaginated D-M group. Sex, age, pancreatic duct size and pancreatic texture were matched. Pancreatic leakage and other complications were compared. SPSS 16.0 was employed for analysis.Results 48 pairs of patients were involved. Both groups had almost the same baseline characterisitics, such as Sex (P=1.000), Age (P=0.897), ASA (P=0.575), BMI (P=0.873), pancreatic duct size (P=0.932), pancreatic texture (P=1.000) and tumor origin (P=0.686). No statistical difference was observed relation to operation outcomes, such as operation time (P=0.632), pancreaticojejunostomy time (P=0.748), blood loss (P=0.617) and number of required transfusion (P=0.523). Pancreatic leakage was significantly declined for invaginated D-M group (P=0.005). The difference of other complications, such as, bleeding (P=0.617), biliary leakage (P=0.646), pneumonia (P=0.594) and thrombosis (P=0.714), didn’t reach statistical significance. Postoperative hospitalization was almost the same for both groups (P=0.764).Conclusions Invaginated D-M PJ could reduce pancreatic leakage followed PD. Invaginated D-M PJ should be a choice for the patients who had PD.

SmartPAN: A novel polysaccharide-microsphere-based surgical indicator of pancreatic leakage

Postoperative pancreatic fistula is a major surgical complication that can follow pancreatic resection. Postoperative pancreatic fistula can develop as a consequence of leaking pancreatic fluid, which calls for an intraoperative indicator of leakage. But suitable indicators of pancreatic leakage have yet to be found. This study details the evidence-based development and early efficacy assessments of a novel pancreatic leakage indicator (SmartPAN), following the IDEAL framework of product development. We developed 41 SmartPAN prototypes by combining indicators of pancreatic fluid with a polysaccharide-microsphere matrix. The prototypes were assessed in vitro using porcine ( Sus scrofa domesticus) pancreatic tissue and ex vivo with human pancreatic fluid. From these initial tests, we chose a hydrogel-based compound that uses the pH indicator bromothymol blue to detect alkali pancreatic fluid. This prototype was then assessed in vivo for usability, effectiveness and reliability using a porcine model. Treatment groups were defined by SmartPAN-reaction at initial pancreatic resection: indicator-positive or negative. Indicator-positive individuals randomly received either targeted closure of leakage sites or no further closure. We assessed SmartPAN’s reliability and effectiveness by monitoring abdominal drainage for amylase and with relaparotomy after 48 h. SmartPAN responses were consistent between both surgical procedures and conformed to amylase measurements. In conclusion, we have developed the first surgery-ready indicator for predicting the occurrence of pancreatic leakage during pancreatic resection. SmartPAN can enable targeted prophylactic closure in a simple and reliable way, and thus may reduce the impact of postoperative pancreatic fistula by guiding peri- and post-operative management.

Risk Factors of Pancreatic leakage AfterWhipple’s Procedure

Background Pancreaticoduedenectomy is the operative of choice in cases of resectable tumors of the periampullary region. Critical step in pancreatic surgery is no longer the resection itself but the reconstruction of the pancreaticoenteric anastomosis. Different methods of pancreatic reconstruction have been proposed aiming to limit the rate of leakage of pancreatic anastomosis. Aim of the Work to evaluate the risk factors of pancreatic remnant leakage after Whipple’s procedure as regards risk factors of the diameter of the pancereatic duct and the texture of the pancereatic remnant during operation (soft or firm). Patients and Methods A prospective study conducted on 30 patients who underwent pancreaticoduodenectomy in Ain Shams University Hospitals during the period from June 2012 to June 2018 to evaluate the risk factors of pancreatic leakage after Whipple’s procedure regarding pancreatic duct diameter and pancreatic remnant texture. Results 60% of leakage group had soft pancreas and narrow pancreatic duct less than 3mm, while 40% of non leakage group had soft pancreas and narrow pancreatic duct less than 3mm. Conclusion strong correlation between postoperative pancreatic leakage and narrow pancreatic duct as well as soft pancreas. Statistics proved that correlation and also, the relation of high mortality rate among those who developed postoperative pancreatic fistula.