Management of Duodenal Blowout

Initial Assessment and Indications for Surgery

The World Journal of Emergency Surgery recommends immediate operative management for patients with hemodynamic instability or peritonitis, with primary repair and nasogastric decompression for most injuries 1, 2
Hemodynamic instability occurs in 10-44% of duodenal injury patients, and associated injuries are present in 68-86.5% of cases 1
Hemodynamically stable patients should proceed to immediate surgery if CT demonstrates free air 2, extravasation of enteral contrast from the duodenum 1, or full thickness laceration (WSES class III, AAST-OIS grade III-V) 2

Consider damage control surgery in hemodynamically unstable patients, particularly those with associated vascular injuries or higher grade duodeno-pancreatic lesions, with improved survival and equivalent or improved complication rates 1, 3, 4
For stable patients, perform primary repair in a tension-free transverse fashion after complete exposure and removal of all devitalized tissue, with nasogastric tube placement for proximal decompression 1, 2
Routine periduodenal drain placement is not supported by evidence 1
For high-grade injuries, modern evidence advocates primary repair, NGT decompression, and external drain placement, with better mortality and duodenal-related morbidity compared to complex drainage and reconstructive procedures 1, 2, 5

For small perforations (<2 cm), perform primary repair whenever technically possible 3, 4
For large perforations (>2 cm), surgical technique selection depends on hemodynamic stability, extent of duodenal tissue loss, presence of experienced surgeon, and associated injuries 1, 3, 4, 6

If duodenal blowout occurs after bariatric surgery, assess the jejuno-jejunostomy for stricture, kinking, or twisting, and resect any anomalies to prevent vascular compromise 4, 7

Delayed diagnosis significantly increases morbidity and mortality, and any central retroperitoneal hematoma should be explored during initial laparotomy 1, 6