Stable thoracoabdominal stab with possible diaphragm breach and colonic injury — select, scope, repair, divert

Examiner probes with expected answers

• Why not open every anterior stab? Selective management is the worldwide gold standard for stable wounds; EAST advises against routine laparotomy without peritonitis or diffuse tenderness; the RCT priced mandatory surgery at 19% morbidity and 5 days against 8% and 2 days observed, with 17% delayed operations.^[16][18][19]
• How long do you watch, and what ends the watch? Modern CT-selected practice observes 83% with 2% failure declaring peritonitis at 10 and 20 hours — a full day of serial examination by the same team; peritonitis, instability or evisceration ends it immediately.^[20]
• What does laparoscopy add here? In 510 stable penetrating patients it avoided laparotomy in 54.3% with 10.2% non-therapeutic residue and minor complications; modern sensitivity runs toward 100% for penetration and diaphragm assessment.^[24][25]
• The thoracoabdominal wound and a normal chest film — reassured? Never: a fifth of scoped thoracoabdominal penetrations carry diaphragmatic injury with nearly a fifth hiding behind normal films; nationally over 62% of diaphragmatic injuries are missed initially including scanned patients.^[26][31]
• What happens if the diaphragm stays missed? Herniation with obstruction or perforation kills up to 85% — repair every defect found, and look by laparoscopy in the stable patient without other operative indications.^[32][26]
• Colon injury at operation — repair or stoma? Repair: five RCTs show equal mortality with fewer complications at OR 0.28; the 297-patient AAST study found 24% complications with no strategy difference and no risk from the repair-versus-diversion choice itself; segment never decides — right and left leak equally.^[27][28][29]
• EAST low-risk colon lane? Repair or resection-and-anastomosis over routine colostomy for adults without shock, major bleeding, severe contamination or delay — 16 trials with 705 low-risk randomised patients behind the recommendation.^[30]
• Rectal injury? Extraperitoneal rectum takes mandatory proximal diversion with washout and presacral drainage omittable; intraperitoneal rectum is repaired primarily like colon.^[40]
• If this were a gunshot instead? Narrower selection: about a third avoid operation with 7.0% failure and 0.4% mortality in stable examined patients; practice fails 8.4% at half a day with most failures therapeutic.^[21][22][23]
• Antibiotics? Intravenous cover with 24 hours equal to five days in the randomised duration trial; regimens are compared against each other, never against nothing.^[34][33]