A single-centre experience of Roux-en-Y enteric drainage for pancreas transplantation

Jejunal or Ileal Exocrine Drainage in Pancreas Transplantation: Impact on Gastrointestinal Function

OBJECTIVES

Pancreas transplant can have serious complications requiring salvage pancreatectomy, and surgical approaches should be carefully considered, with jejunal or ileal anastomoses most often employed. The jejunum may reduce gastrointestinal disturbance, whereas the ileum is more immunogenic. Proximal gastrointestinal anastomoses pose challenges with salvage pancreatectomy and creation of high-output stoma, often in the context of end-stage renal failure. Here, we compared outcomes between these techniques.

MATERIALS AND METHODS

We retrospectively analyzed patient records of simultaneous pancreas and kidney transplants at a single center between 2013 and 2015, with follow-up to 2020.

RESULTS

Our center performed 86 simultaneous pancreas and kidney transplants during the study period; 10 patients were excluded because of incomplete records of anastomosis type. Of included recipients, 59.2% were men (mean age 41.5 ± 8.4 y), 72.4% were donors after brain death, and 98.7% had received a first pancreas transplant. Forty-three simultaneous pancreas and kidney transplants were performed with ileal anastomosis and 33 with jejunal anastomosis. We found no significant differences in recipient or donor factors or immunosuppression regimen between anastomosis groups and no significant differences in overall patient, pancreas, or kidney graft survival or in gastrointestinal complications. Hospital length of stay was higher with ileal anastomosis (median 14 vs 19 days; P < .05), as was cold ischemic time (median 8:48 vs 9:31 hours; P < .05). Three patients required salvage pancre-atectomy and loop ileostomy formation with multiorgan support, prolonged intensive care unit stay, relaparotomy, and/or laparostomy.

CONCLUSIONS

Long-term outcomes were comparable between our patient groups. Catastrophic complica-tions occur in a minority of cases, requiring salvage surgery. More complications occurred with ileal anastomosis, but this approach allows graft pancreatectomy and formation of loop ileostomy, avoiding a more proximal stoma in clinically unstable patients. Further studies are needed to examine the impact of enteric anastomosis site.

Technical factors that minimize the occurrence of early graft failure in pancreas transplantation

Pancreatic transplantation is the only treatment for insulin-dependent diabetes resulting in long-term euglycemia without exogenous insulin. However, pancreatic transplantation has become debatable following the improvements in the results of islet transplantation and artificial pancreas. Therefore, surgeons who perform pancreas transplants require the best surgical technique that can minimize technical failure. We aimed to report our experiences with pancreatic transplantations. We transplanted 65 pancreatic grafts between 2015 and 2020. Except for one death due to hypoxic brain damage after surgery, no postoperative technical failure was observed. We usually perform duodeno-duodenal anastomosis using the transperitoneal approach, with retrocolic placement of the graft pancreas. There was no leakage from the duodenum even after immunologic graft failure. To prevent venous thrombosis, which is the most common cause of technical failure, we used the inferior vena cava for anastomosis and added graft venoplasty with a patch of donor vena cava or aortic interposition graft to the bench procedure; subsequently, there were no cases of technical failure due to thrombosis post-transplantation. Therefore, the 1-year graft survival (insulin-free) rate was more than 95%. The improving the surgical technique will maintain pancreatic transplantation as the best treatment for insulin-dependent diabetes. This article is protected by copyright. All rights reserved.

Evidence for Roux-en-Y Pancreatic Duct Drainage Versus Standard Anastomosis in Pancreatic Transplantation

OBJECTIVES

Pancreatic transplantation is usually performed simultaneously with renal transplantation in the setting of end-stage nephropathy and type 1 diabetes. Surgical methods for dealing with exocrine secretions include bladder drainage, direct duodenojejunostomy and Roux-en-Y (ReY) enteric drainage. Roux-en-Y may confer an advantage over duodenojejunostomy because it distances enteric content from the transplant duodenal anastomosis. We examined the effect of enteric drainage method on transplant outcomes.

METHODS

Data were obtained from the UK transplant registry on 2172 consecutive pancreatic transplants. Early graft loss was the primary endpoint. Secondary endpoints included return to theater, length of inpatient stay, readmission with pancreatitis, graft survival, and patient survival.

RESULTS

There was no protective effect of ReY drainage (early graft loss, 4.6% vs 3.1%, P = 0.30; hazard ratio, 0.98; 95% confidence interval, 0.63-1.52; P = 0.91). There was a significant association between ReY and return to theater, reflecting either the technique or indication for ReY (multivariate odds ratio, 2.05; 95% confidence interval, 1.38-3.06; P < 0.01). The effect of transplant center on graft survival was assessed and adjusted for.

CONCLUSIONS

There was no evidence of a protective benefit of ReY drainage over duodenojejunostomy, but there was an increased risk of return to theater.

Working towards an ERAS Protocol for Pancreatic Transplantation: A Narrative Review

Enhanced recovery after surgery (ERAS) initially started in the early 2000s as a series of protocols to improve the perioperative care of surgical patients. They aimed to increase patient satisfaction while reducing postoperative complications and postoperative length of stay. Despite these protocols being widely adopted in many fields of surgery, they are yet to be adopted in pancreatic transplantation: a high-risk surgery with often prolonged length of postoperative stay and high rate of complications. We have analysed the literature in pancreatic and transplantation surgery to identify the necessary preoperative, intra-operative and postoperative components of an ERAS pathway in pancreas transplantation.

CT fluoroscopy-guided pancreas transplant biopsies: a retrospective evaluation of predictors of complications and success rates

To identify predictors of biopsy success and complications in CT-guided pancreas transplant (PTX) core biopsy. We retrospectively identified all CT fluoroscopy-guided PTX biopsies performed at our institution (2000-2017) and included 187 biopsies in 99 patients. Potential predictors related to patient characteristics (age, gender, body mass index (BMI), PTX age, PTX volume) and procedure characteristics (biopsy depth, needle size, access path, number of samples, interventionalist's experience) were correlated with biopsy success (sufficient tissue for histologic diagnosis) and the occurrence of complications. Biopsy success (72.2%) was more likely to be obtained in men [+25.3% (10.9, 39.7)] and when the intervention was performed by an experienced interventionalist [+27.2% (8.1, 46.2)]. Complications (5.9%) occurred more frequently in patients with higher PTX age [OR: 1.014 (1.002, 1.026)] and when many (3-4) tissue samples were obtained [+8.7% (-2.3, 19.7)]. Multivariable regression analysis confirmed male gender [OR: 3.741 (1.736, 8.059)] and high experience [OR: 2.923 (1.255, 6.808)] (biopsy success) as well as older PTX age [OR: 1.019 (1.002, 1.035)] and obtaining many samples [OR: 4.880 (1.240, 19.203)] (complications) as independent predictors. Our results suggest that CT-guided PTX biopsy should be performed by an experienced interventionalist to achieve higher success rates, and not more than two tissue samples should be obtained to reduce complications. Caution is in order in patients with older transplants because of higher complication rates.

[Surgical aspects of pancreas transplantation: exocrine drainage. Part 3]

Exocrine drainage is an Achilles heel of pancreas transplantation. The author analyzed the outcomes of pancreas transplantations with different types of exocrine drainage in various centers (n=93). The article will ensure insight into evolution of techniques of exocrine drainage within the historical context and current state of this issue.

Surgery of pancreas transplantation

PURPOSE OF REVIEW

The surgical techniques of pancreas transplantation have been evolving and significantly improved over time. This article discusses different current techniques and their modifications.

RECENT FINDING

At this time, the most commonly used technique is systemic venous drainage (for venous outflow) and enteric drainage (for management of exocrine pancreatic secretions). However, new modifications of established techniques such as gastric or duodenal exocrine drainage and venous drainage to the inferior vena cava continue to be introduced.

SUMMARY

This article provides a state-of the-art review of the most prevalent up-to-date surgical techniques as well as a synopsis of their specific risks and benefits. The article also provides the most current registry data regarding utilization of different surgical techniques in the United State and worldwide.