8.3 Abdominal, Pelvic & Extremity Trauma in Pediatric Patients
Key Takeaways
- Hemodynamically stable pediatric patients with blunt solid organ injuries (spleen and liver) are successfully managed non-operatively in ICU settings with serial abdominal exams and hemoglobin monitoring.
- A direct impact to the epigastrium (e.g., bicycle handlebar collision) should raise immediate suspicion for duodenal hematoma, pancreatic transection, or traumatic bowel perforation.
- Unstable pelvic fractures require prompt mechanical stabilization by placing a pelvic binder or sheet centered directly over the greater trochanters to reduce retroperitoneal volume and control hemorrhage.
- Pediatric Massive Transfusion Protocols (MTP) utilize balanced 1:1:1 ratios of Packed Red Blood Cells (PRBCs), Fresh Frozen Plasma (FFP), and Platelets in weight-based aliquots (10 to 20 mL/kg) to prevent trauma-induced coagulopathy.
8.3 Abdominal, Pelvic & Extremity Trauma in Pediatric Patients
Abdominal and pelvic injuries represent major sources of occult hemorrhage in pediatric trauma. Because children possess flexible anatomical structures and robust cardiovascular compensation, significant intra-abdominal bleeding can occur without early drops in systemic blood pressure. Emergency nurses must understand solid organ management, mechanism-specific injuries, and rapid transfusion protocols.
Pediatric Solid Organ Injury (Spleen & Liver)
Blunt abdominal trauma in children most commonly injures the spleen (most common overall) and the liver (second most common). Anatomically, these organs are larger relative to body mass, extend below the costal margin, and have thin capsules.
Clinical Presentation & Non-Operative Management (NOM)
- Splenic Injury: Left upper quadrant tenderness, guarding, and Kehr’s sign (referred left shoulder pain from subdiaphragmatic blood irritating the phrenic nerve).
- Liver Injury: Right upper quadrant pain, right lower rib cage tenderness, and abdominal wall ecchymosis.
- Diagnostic Tools: Focused Assessment with Sonography for Trauma (FAST) scan detects free intraperitoneal fluid. Contrast-enhanced CT scanning grades lacerations (Grades I–V).
- Non-Operative Standard: Over 90% of hemodynamically stable pediatric solid organ injuries are managed non-operatively.
- NOM Nursing Protocol: PICU admission, strict bed rest, serial abdominal exams, and serial hemoglobin/hematocrit monitoring every 4 to 6 hours. Operative intervention is dictated by hemodynamic instability despite > 40 mL/kg PRBC transfusion, not by initial CT grade.
Mechanism-Specific GI & Pancreatic Trauma
1. Handlebar Impact & Duodenal Hematoma
- Mechanism: Small-surface impact (bicycle handlebar, sled end) directly compresses the retroperitoneal duodenum against the lumbar spine.
- Duodenal Hematoma: Submucosal blood accumulation progressively obstructs the duodenal lumen.
- Delayed Presentation: Children present 24 to 48 hours post-injury with intractable bilious vomiting, epigastric pain, and proximal bowel obstruction.
- Management: Managed conservatively with nasogastric tube decompression and Total Parenteral Nutrition (TPN) for 2 to 3 weeks.
2. Pancreatic Trauma
- Epigastric compression against the spine causes contusion, laceration, or transection. Patients present with epigastric pain radiating to the back, vomiting, and elevated serum amylase/lipase levels.
3. Traumatic Bowel Perforation & Chance Fractures
- Lap-Belt Injury: High-speed deceleration with a lap belt causes abdominal hyperflexion.
- Chance Fracture: Flexion-distraction lumbar fracture (L2–L4) frequently associated with bowel mesentery tears.
- Seatbelt Sign: Transverse abdominal ecchymosis carries > 50% incidence of underlying hollow viscus injury.
Pelvic Fractures & Emergency Hemorrhage Control
Pelvic fractures indicate severe kinetic force. Disruption of the cartilaginous pelvic ring expands retroperitoneal volume, causing massive arterial and venous plexus hemorrhage.
Application of Pelvic Binders
- Apply a commercial pelvic binder or folded bedsheet.
- CRITICAL LANDMARK: Center the binder directly over the greater trochanters (NOT the iliac crests). Trochanteric compression reduces retroperitoneal volume, stabilizes bone fragments, and tamponades venous bleeding.
- Avoid Manipulation: Never perform repetitive manual pelvic rocking, which dislodges blood clots and accelerates hemorrhage.
Pediatric Extremity Trauma & Compartment Syndrome
Extremity injuries include fractures, dislocations, and crush trauma. Salter-Harris fractures (involving epiphyseal growth plates) require precise reduction to prevent growth arrest.
Acute Compartment Syndrome
Elevated intra-fascial pressure compromises capillary perfusion, leading to tissue necrosis.
- Early & Most Reliable Sign: Pain out of proportion to the injury and severe pain elicited upon passive stretch of affected muscles.
- The 6 Ps: Pain, Pressure, Paresthesia, Pallor, Paralysis, and Pulselessness (paralysis and pulselessness are late signs).
- Nursing Actions: Immediately remove restrictive casts or dressings down to skin. Position the limb at HEART LEVEL (do NOT elevate above heart, as elevation reduces perfusion pressure). Notify surgery for emergency fasciotomy.
Massive Transfusion Protocol (MTP) in Pediatric Trauma
Pediatric MTP is triggered by persistent hemorrhagic shock despite initial crystalloid resuscitation or replacement of > 50% blood volume in 3 hours.
Balanced Resuscitation (1:1:1 Ratio)
Pediatric MTP delivers a balanced 1:1:1 ratio of PRBCs, Fresh Frozen Plasma (FFP), and Platelets in weight-based aliquots (10 to 20 mL/kg) to prevent trauma-induced coagulopathy.
| Component | Pediatric Dosing | Target Endpoint |
|---|---|---|
| PRBCs | 10 to 20 mL/kg | Hemoglobin > 8 to 10 g/dL |
| FFP | 10 to 20 mL/kg | Replace clotting factors; INR < 1.5 |
| Platelets | 10 to 20 mL/kg (or 1 unit/10 kg) | Platelets > 100,000/mcL |
| Cryoprecipitate | 5 to 10 mL/kg (or 1 unit/5 kg) | Fibrinogen > 150 to 200 mg/dL |
Managing Resuscitative Complications
- Hypocalcemia: Citrate in blood binds serum calcium. Monitor ionized calcium and administer IV calcium gluconate (60–100 mg/kg) or IV calcium chloride (20 mg/kg via central line).
- Hypothermia & Hyperkalemia: Administer all blood products through high-flow fluid warmers. Use fresh PRBCs (< 7 days old) to prevent hyperkalemic cardiac arrest.
Clinical Scenario: Bicycle Handlebar Impact
A 9-year-old male (30 kg) presents 36 hours post-bicycle crash with worsening epigastric pain and bilious vomiting.
- Assessment: Epigastric bruised impression, focal rebound tenderness, double-bubble sign on X-ray. Contrast CT confirms duodenal hematoma.
- Nursing Interventions: NPO status, nasogastric tube insertion attached to low intermittent suction, IV D5 0.45% NS at 1.5x maintenance, baseline amylase/lipase/CBC labs, and admission for conservative non-operative management.
A 6-year-old female is admitted to the pediatric trauma intensive care unit following a blunt splenic laceration sustained in a motor vehicle collision. CT scan confirms a Grade III splenic injury. She remains hemodynamically stable. What is the standard management protocol for this patient?
A 10-year-old boy presents to the ED with severe epigastric pain and persistent bilious vomiting 30 hours after colliding with his bicycle handlebars. Which injury mechanism and pathological finding best explain this clinical presentation?
Which combination of interventions represents correct evidence-based nursing care for emergency pelvic fracture hemorrhage control and pediatric Massive Transfusion Protocol (MTP) execution?