Unstable open-book pelvis with shock and a perineal wound — binder, pack-versus-plug with clocks, and the open-fracture second killing

Model answer

• First five minutes: binder now (ATLS standard, yet only 47% of unstable fractures received one), blood with the binder, FAST plus pelvic film in parallel — declare the WSES frame that management is multidisciplinary and based on physiology plus anatomy.^[14][1]
• Bleeding logic: packing directly addresses the bony and venous bleeding that forms the majority of exsanguinating loss, so the unstable-despite-red-cells patient earns extraperitoneal packs; the blush earns embolisation, which remains the arterial mainstay.^[12]
• Pack-versus-plug with numbers: 2,040-patient meta — packing saves 1.0 unit of 24-hour blood with mortality RR 0.91 and DVT RR 0.89, both non-significant; 579-patient review — crude 23% versus 32% but dual-arm no difference, with 27% of packed patients needing subsequent embolisation.^[6][7]
• Timing and AAST position: 620-patient curve — 0% dead at 0 to 30 minutes rising to 17.0% adjusted at 150 to 180 minutes, so embolise at the earliest opportunity; AAST 948-patient data associate packing with OR 64.0 at 3 hours but reserve packing for deeper shock, positioning embolisation first-line only where rapid endovascular access exists.^[4][2]
• Open-fracture counsel: 41-patient series — 24% dead (3 early, 7 late), 17.2 units transfused, 60-day stays; reviews reach 50% mortality, five times closed; early death is exsanguination, late death is wound sepsis with multi-organ failure.^[26][24]
• WSES prognosis and sepsis: 830 open fractures — mild 3.5%, moderate 11.2%, severe 23.8%; sepsis multiplies every class (minor 40.0% versus 3.1%, moderate 50.0% versus 9.1%, severe 66.7% versus 22.2%).^[33]
• Urology screen: 7.7% LUTI incidence confined to unstable patterns, so retrograde urethrogram for blood at the meatus and cystography for bladder suspicion before any catheter; pooled open data add 19.7% GU injury with one in three females sustaining vaginal laceration.^[21][36]