A 34-year-old man lies on the trauma bay stretcher, his shirt cut away and streaked with road grit. His skin is gray and cool; the monitor flashes a heart rate of 138 while a nurse struggles to obtain a blood pressure. He answers questions with a single word, then looks toward the swelling beneath his left ribs. The team has not yet found where the blood is going.

— What’s your move? Read on.

Before you read
  • Which reversible causes of traumatic shock must be addressed in parallel?
  • When should permissive hypotension be abandoned?

When to Think of It

Enter traumatic shock early with hypotension, narrow pulse pressure, tachycardia, altered mentation, cool clammy skin, delayed capillary refill, weak pulses, rising shock index, or worsening base deficit/lactate. Do not wait for hypotension: ongoing bleeding may be present with normal vital signs, especially in young adults.

Sick or Not Sick

Sick vs. not sick: Is there suspected ongoing hemorrhage with inadequate perfusion? The key call is whether to activate the massive transfusion/hemorrhage pathway while simultaneously searching for a rapidly reversible thoracic, abdominal, pelvic, or external source.

The First Fifteen Minutes

  • Activate trauma team, blood bank, and massive transfusion protocol for shock with suspected major hemorrhage; obtain two large-bore IVs or an IO, continuous monitoring, and type/cross.
  • If hemorrhagic shock is likely, give warmed balanced blood products—commonly 1:1:1 red cells:plasma:platelets per local protocol—because oxygen-carrying capacity and coagulation factors are restored together. Use uncrossmatched group O red cells immediately if blood is needed before type-specific products are ready (O-negative for females of childbearing potential when feasible; O-positive is acceptable for many exsanguinating adults per institutional protocol).
  • If blood is briefly unavailable, give 500 mL warmed balanced crystalloid IV while obtaining blood; excessive crystalloid worsens dilution, hypothermia, and acidosis.
  • Give tranexamic acid 1 g IV over 10 minutes when major traumatic bleeding is suspected and presentation is within 3 hours of injury; follow with 1 g IV over 8 hours per protocol, because early antifibrinolysis stabilizes formed clot. Benefit is time-dependent; avoid routine use when bleeding is not suspected.
  • If hypotension persists during transfusion or massive transfusion is underway, give calcium chloride 1 g IV/IO (10 mL of 10%) or calcium gluconate 3 g IV (30 mL of 10%), guided by ionized calcium and local protocol, because citrate binding can impair myocardial contractility and coagulation.
  • For severe pain with preserved blood pressure, use fentanyl 25–50 micrograms IV, repeated every 5 minutes to effect; it provides analgesia with less histamine-mediated vasodilation, but reduce dosing in shock and monitor ventilation.
  • If tension pneumothorax is clinically suspected with shock or severe respiratory compromise, perform immediate finger/open thoracostomy or needle decompression—do not wait for imaging—because relieving obstructive pressure restores venous return.
  • Expose fully, logroll when safe, apply a pelvic binder over the greater trochanters for suspected pelvic fracture, and prevent heat loss.

Definitive Care & Disposition

Perform eFAST, chest and pelvic radiographs only if they do not delay intervention; unstable patients with positive abdominal FAST need operative or interventional hemorrhage control. Unstable pelvic bleeding may require binder, preperitoneal packing, angioembolization, or resuscitative endovascular balloon occlusion in selected systems. Obtain CT only after physiologic stabilization. Continue balanced blood products with viscoelastic-guided correction, warming, fibrinogen replacement, and definitive surgery/IR. Any patient requiring transfusion, vasopressor support, operative control, or ongoing resuscitation belongs in the trauma ICU/OR/IR pathway.

How This One Kills

The lethal error is treating hemorrhagic shock with liters of crystalloid while delaying hemorrhage control; the patient becomes cold, acidotic, coagulopathic, and then suddenly arrests from exsanguination.
The Differential — What Else Looks Like This
  • Tension pneumothorax — unilateral absent breath sounds with obstructive shock; confusing it with hemorrhage delays immediate decompression.
  • Cardiac tamponade — pericardial fluid with poor filling and narrow pulse pressure; confusing it with simple hypovolemia delays thoracic intervention.
  • Neurogenic shock — hypotension with relative bradycardia and warm skin after spinal injury; giving only blood misses loss of sympathetic tone.
  • Adrenal crisis — refractory vasoplegia, hyponatremia, or hyperkalemia without a bleeding source; confusing it with occult hemorrhage delays steroids.

The Second-Day Story

Older adults, patients taking beta-blockers, and pregnant patients may not mount tachycardia; anticoagulated patients may bleed substantially before hypotension. A normal initial hemoglobin does not exclude acute hemorrhage, because equilibration takes time. Follow serial examination, shock index, lactate/base deficit, urine output, mental status, and response to blood—not a single vital sign or hemoglobin value.
Back to Our Patient
Back to our 34-year-old man: cool skin, altered mentation, tachycardia, and hypotension make him sick, with presumed hemorrhagic shock until proven otherwise. The team activates massive transfusion, obtains rapid IV/IO access, gives warmed balanced blood products and early tranexamic acid, checks ionized calcium, applies a pelvic binder if indicated, and performs eFAST while examining the chest and abdomen. A positive FAST with persistent instability sends him directly to the operating room for hemorrhage control rather than CT; he is admitted to the trauma ICU after operative resuscitation.
Patient Presentation to Attending
How you’d present this patient on the floor — tight, pertinent positives and negatives, no rambling
“This is a 34-year-old man with blunt torso trauma from a motorcycle collision, now hypotensive and altered. He has a heart rate of 138, cool mottled skin, weak radial pulses, and left upper-quadrant tenderness with no obvious external hemorrhage; breath sounds are present bilaterally and there is no tracheal deviation. His eFAST shows free fluid in the left upper quadrant, and initial hemoglobin is not yet reliable. I’m concerned for hemorrhagic shock from intra-abdominal injury, so I’ve activated massive transfusion, started warmed blood products and tranexamic acid, obtained large-bore access, and will send him directly for operative hemorrhage control while continuing evaluation for chest and pelvic bleeding.”

Study Directive

  • Draw the first-15-minute trauma algorithm from memory, including the four immediately reversible obstructive/hemorrhagic causes.
  • Rehearse an MTP activation and calcium/TXA sequence using your institution’s protocol.
  • Review eFAST windows and perform five practice scans under supervision.
  • Solve three trauma shock cases, explicitly stating the trigger for blood, TXA, surgery, IR, or CT.

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