Blunt polytrauma with hypotension at 50 minutes — activation, ratios, TXA clock, calcium and after-haemostasis vigilance

Management walkthrough

Activate DCR now — physiology plus FAST, scored formally while transfusing. Systolic 80 with tachycardia, positive FAST and pelvic fracture on 2 units meets every clinical trigger layer — score the four ABC variables (penetrating, FAST-positive, systolic 90 or less, pulse 120 or more) while blood runs, because waiting for laboratory coagulation is the error: shocked arrivals show deranged lactate with near-normal clotting values.^[32] Resuscitate with equal amounts of red cells, plasma and platelets in the early empiric phase per EAST (protocol OR 0.61, high plasma OR 0.60, high platelets OR 0.44) — quoting PROPPR whole: no mortality difference (12.7 versus 17.0% at 24 hours; 22.4 versus 26.1% at 30 days), fewer exsanguinations (9.2 versus 14.6%), more haemostasis (86 versus 78%), complications equal.^[8][5]

TXA 1 g with the first blood — 50 minutes is inside the best window. Dose 1 g loading over 10 minutes then 1 g over 8 hours: all-cause 14.5% versus 16.0%, bleeding death 4.9% versus 5.7%.^[16] At 50 minutes he sits inside the within-1-hour band (RR 0.68) and the 90-minute optimum (within aRR 0.64, beyond aRR 1.04) — after 3 hours the same drug carries a harm signal (RR 1.44), so the loading dose runs now, not after theatre or the scanner.^[17][18]

Replace calcium by level; ration fibrinogen by level with bleeding; starve the crystalloid. Ionised 0.96 meets verified hypocalcaemia (1.0 or less): plasma-associated lows run 53% versus 36% with survival tied to severe lows — so give calcium under citrate load and recheck each round, stating no fixed dose.^[21] Check fibrinogen with the first round and replace documented low-with-bleeding only — never empirically for every activation, because early 3-pool cryoprecipitate changed 28-day death not at all (25.3% versus 26.1%).^[28] Cap crystalloid hard: volume among blood recipients raised mortality (HR 1.65), while hypotensive strategy in hospital cut death (6.3 versus 16.3%) — blood first, salt water least, and prehospital blood over crystalloid wherever the chain carries it (NNT near 10).^[37][3]

After haemostasis: pelvis, prophylaxis and disposition. Definitive pelvic control (binder to frame per orthopaedics, angioembolisation on blush), rewarming with transfusion-harm vigilance (rate control, one-unit discipline, cross-checks), ICU with surgical and transfusion-medicine input — and VTE prophylaxis from the moment bleeding allows, because 13% of balanced-resuscitation patients develop VTE with pulmonary embolus predominant in the first 72 hours and late events tracking delayed ratio achievement.^[41] Re-escalation triggers are written (pressure, lactate, calcium, fibrinogen, respiratory status), not assumed.