🔴 Trauma bay use only. All conditions require trauma surgery + critical care team activation. Hemodynamic instability dictates operative pathway. FAST exam guides resuscitation decisions. · Evidence: A = RCT/meta-analysis · B = cohort/consensus · Ev = ATLS/EAST/BTF level · REBOA: EAST 2025 — conditional recommendation AGAINST for most subdiaphragmatic trauma.