OGC SO37 - Pyloric drainage interventions for delayed gastric conduit emptying after oesophagectomy: A single centre analysis

Abstract Background Oesophagectomy in combination with perioperative multimodal therapy is the cornerstone of modern curative treatment for resectable oesophageal cancer. Delayed gastric emptying (DGE) is a common postoperative complication that results from the anatomical and physiological changes in the gastric conduit after an oesophageal resection. It is associated with an increased risk of pneumonia, anastomotic leak and prolonged hospital stay. Although several prophylactic pyloric drainage interventions have been postulated to mitigate the risk of DGE, the optimal modality remains debatable. This study aimed to define the incidence, evaluate prognostic factors, and characterise the management of DGE following oesophagectomy. Method Consecutive patients who underwent an oesophagectomy for oesophageal cancer between January 2022 and March 2024 were retrospectively identified from a hospital database. Pyloric drainage procedures consisted of expectant management, endoscopic/open pyloric Botox and pyloroplasty. Univariable and multivariable analyses were performed to define the incidence of DGE after each pyloric drainage modality, evaluate prognostic factors for DGE, and characterise the need for subsequent intervention in the management of DGE. Results The study cohort comprised 137 patients – mean age 66 years, male 78%. The incidence of DGE was 31%. Pyloroplasty had the lowest incidence of DGE (16%) followed by endoscopic botox (21%). Intra-operative pyloric drainage reduced the risk of DGE (p=0.03). The modality of prophylactic pyloric drainage used significantly influenced the risk of developing DGE (p=0.028). No significant differences were identified between patient demographics, operative approach, and oncological variables in the development of DGE. On multivariable analysis, pyloroplasty was associated with a reduced risk of DGE (OR 0.27, 95% CI 0.09 – 0.71). DGE did not influence overall survival. Conclusion DGE is a common postoperative complication which affects up to 39% of patients undergoing oesophagectomy. Patients who did not undergo a prophylactic pyloric drainage procedure during the index oesophagectomy were at an increased risk of developing DGE. Most patients with DGE (71%) require further intervention via endoscopy and botox injection. Pyloroplasty as a prophylactic drainage modality significantly reduced the risk of developing DGE compared to endoscopic botox. Further prospective randomised controlled trials are required to validate these findings.