1225 How Are Acutely Symptomatic Hernias Repaired in The UK? Surgical Techniques from The MASH Study

Aim Minimal evidence exists guiding the emergency management of acutely symptomatic abdominal wall and groin hernias (ASH) and there is a lack of consensus on optimal surgical technique. The aim of this study was to explore surgical techniques used in the repair of ASH. Method A prospective 12-week cohort study (NCT04197271) recruited adult patients with ASH across 23 UK sites. Baseline characteristics, quality of life, management strategy and 30/90-day outcomes were collected. For those undergoing surgery, detailed information was recorded on: time to surgery, anaesthetic technique, grade of surgeon, intraoperative findings, antibiotic use, operative approach, repair technique (mesh vs suture), mesh/suture type and position, and whether bowel resection/stoma formation was required. Results Of the 264 patients recruited, 214 (82%) underwent acute repair within 48 hours of admission. 95% of patients underwent open repair, 93% under general anaesthetic. Mesh was used in 89% of inguinal hernia repair vs 29% umbilical hernia repair. The majority (86%) used a synthetic non-absorbable mesh (94% inguinal, 84% umbilical). Mesh placement varied widely for epigastric and umbilical hernia, with onlay used most commonly (24%). Similar variation was seen in suture choice. 8% of patients developed an SSI by 30 days, the majority which were in umbilical repairs. One patient developed early hernia recurrence (umbilical) requiring surgery. Conclusions This data demonstrates variation in the surgical management of ASH, especially with the use of mesh. Laparoscopic surgery was uncommon. Further studies are required to clarify optimal technique strategies in the emergency setting.