Differentiated approach to pancreatic-enteroanastomosis in pancreaticoduodenal resection: a clinical experimental controlled trial

Background. Despite decreasing mortality in pancreaticoduodenal resection, the incidence of postoperative complications in such patients remains high. The choice and formation of “reliable” pancreatic-enteroanastomosis remain relevant.Objectives. The improvement of immediate surgery outcomes in pancreaticoduodenal resection via development of a differentiated algorithm for pancreatic-enteroanastomosis formation.Methods. A prospective non-randomised controlled trial enrolled 90 patients with a pancreaticoduodenal resection surgery. The patients were divided in three cohorts, A (n = 30), B (n = 30) and control C (n = 30). Pancreatic shear wave ultrasound elastography was conducted pre-surgery in main cohorts A and B. Average parenchymal stiffness and intraoperative data decided between the two pancreatico-enteric anastomosis techniques, end-to-side or the original pancreatic-enteroanastomosis. Control cohort C had pancreatico-enteric anastomosis without taking into account the pancreas stiffness and macrocondition.Results. Class A postoperative pancreatic fistula was registered in 2 (6.7%) of 30 patients in cohort B; it was transient, asymptomatic, not requiring additional treatment or a longer postoperative period. No class B and C pancreatic-enteroanastomosis failures or stump pancreonecroses were observed in main cohorts A and B. Clinically significant class B and C postoperative pancreatic fistulae were registered in 5 (16.7%) of 30 patients in control cohort C (inter-cohort comparison statistically significant).Conclusion. The proposed differentiated approach to pancreatic-enteroanastomosis formation associates with a reliably low postoperative complication frequency and lack of clinically significant class B and C postoperative pancreatic fistulae