Polytrauma with bleeding and cord injury — competing shocks, ratio blood, early TXA

Management walkthrough

Classify both shocks aloud — bleeding first, cord injury alongside. The femoral bleed with cold clammy hypotension, tachycardia and lactate 5.2 is hypovolaemic shock of the blood-and-fluids compartment: absolute volume loss, treated by fluid replacement with balanced crystalloids and blood.^[1] The absent movement below the nipples with warm dry legs and a non-rising heart rate is the second shock: a high-thoracic/cervical pattern where destroyed sympathetic activity with unopposed vagal drive gives hypotension plus bradycardia, against lower-thoracic pooling that gives hypotension alone.^[32] Say both, treat bleeding as the killer first, and exclude the third category — obstructive chest injury (tension, tamponade, massive haemothorax) needs immediate life-saving intervention, not fluids-and-wait.^[35][1]

Resuscitate with tested challenges, pressors early, blood by ratio. Balanced-crystalloid challenges with dynamic responsiveness testing before each bolus — static markers are repeatedly unreliable, blind fluids often give no benefit, and excess harms lungs already bruised.^[10] Start norepinephrine early to MAP 65+ rather than dopamine: arrhythmia 24.1% versus 12.4% and meta-analytic mortality relative risk 0.89 with number needed to treat 9.^[22][23] Activate 1:1:1 plasma:platelets:red cells — no 24-hour mortality difference but exsanguination death 9.2% versus 14.6% with more haemostasis and no extra complications — while compressing, splinting and booking haemorrhage control (fracture, chest, abdomen) in parallel.^[29]

Give TXA now — the clock is the decision. Tranexamic acid 1 g over 10 minutes then 1 g over 8 hours: all-cause death 14.5% versus 16.0%, bleeding death 4.9% versus 5.7%.^[30] Within the hour the bleeding-death relative risk is 0.68, at 1-to-3 hours 0.79, after 3 hours 1.44 harm — in the trauma bay he is inside benefit, so give it with the first blood, never after the third hour.^[31]

Manage the cord injury as its own resuscitation. Maintain euvvolaemia with crystalloids and maintain or augment MAP with pressors matched to injury level and haemodynamics — bradycardic high lesions need chronotropic/inotropic thinking, not fluids alone — with full spinal precautions, log-roll, urinary catheter, pressure care and ICU-level perfusion monitoring from arrival.^[32] Disposition is ICU with trauma, orthopaedic, thoracic and spinal input; re-escalation triggers (MAP, urine, mentation, refill, lactate trajectory) are written, not assumed.