8.2 Head, Spinal & Thoracic Trauma in Children

8.2 Head, Spinal & Thoracic Trauma in Children

Head, spinal, and thoracic injuries account for the majority of trauma deaths and long-term disabilities in pediatric patients. Because children present with subtle physical signs and unique anatomical responses to blunt kinetic forces, emergency nurses must rapidly identify life-threatening injuries and intervene before secondary organ damage occurs.

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Pediatric Traumatic Brain Injury (TBI) & Intracranial Dynamics

Unfused cranial sutures and open fontanelles in infants allow transient expansion of intracranial volume, masking early signs of mass lesions. However, once compensatory mechanisms are exhausted, intracranial pressure (ICP) rises rapidly, triggering neurological collapse.

Primary vs. Secondary Brain Injury

• Primary Injury: Direct mechanical damage occurring at impact (contusions, epidural/subdural hematomas, diffuse axonal injury).
• Secondary Injury: Cellular damage evolving post-impact due to physiological insults. Nursing management prioritizes preventing secondary brain injury by strictly avoiding hypoxemia, hypotension, hypercapnia, hypoglycemia, and hyperthermia.

Target Parameters in Pediatric TBI:
- Oxygenation: PaO2 > 60 mmHg (SpO2 ≥ 95%)
- Blood Pressure: Systolic BP > 5th percentile for age
- Carbon Dioxide: PaCO2 35 to 40 mmHg (Normocapnia)
- Core Temperature: 36.5°C to 37.5°C
- Blood Glucose: 80 to 180 mg/dL

Neurologic Monitoring in Trauma (Avoid Secondary Injury)

Use the age-adjusted Pediatric Glasgow Coma Scale and recognize Cushing triad / pupillary asymmetry as late herniation warnings—full pGCS scoring tables, ICP pathophysiology, and osmotic therapy details are covered in Section 4.2 (Altered Mental Status, Increased ICP & Head Trauma). In the trauma bay, prioritize:

• Serial neurologic checks with the same scale each time
• Prevention of hypoxia and hypotension (the two strongest drivers of secondary brain injury)
• Early neurosurgical notification for lateralizing signs, open fractures, or penetrating injury
• Cervical spine protection until cleared by protocol

Nursing Interventions for Elevated ICP

1. Elevate head of bed 30 degrees with head in neutral midline position.
2. Maintain normocapnia (EtCO2 35–40 mmHg). Reserve hyperventilation (EtCO2 30–35 mmHg) exclusively for active pupillary dilation or acute herniation.
3. Administer hyperosmolar therapy as prescribed:
   • Hypertonic Saline (3% NaCl): 2 to 5 mL/kg IV over 10 to 20 minutes for acute ICP spikes.
   • Mannitol: 0.5 to 1 g/kg IV over 20 minutes (requires adequate blood pressure).
4. Administer IV analgesia and sedation to prevent ICP spikes during nursing care.

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Spinal Cord Injury Without Radiologic Abnormality (SCIWORA)

SCIWORA occurs predominantly in pediatric trauma patients under eight years. It is defined as objective neurological deficits (paresthesias, weakness, numbness, or paralysis) indicative of spinal cord injury without fracture or ligamentous dislocation on plain X-rays or CT scans.

Pathophysiology & Management

• Pathophysiology: Hyperflexible pediatric spinal ligaments and cartilaginous vertebrae stretch up to 2 inches without fracturing, while the inelastic spinal cord ruptures or suffers ischemic injury.
• Clinical Presentation: Any child reporting transient weakness, numbness, or electrical shock sensations following blunt trauma must be managed as having spinal cord injury.
• Diagnostic Standard: X-rays and CT scans are normal; urgent MRI is mandatory to evaluate cord edema and ischemia.
• Nursing Actions: Maintain strict spinal immobilization in a rigid collar and log-roll precautions until cleared by pediatric neurosurgery.

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Life-Threatening Pediatric Thoracic Emergencies

A mobile pediatric mediastinum allows tension forces to rapidly displace the heart and great vessels, causing sudden cardiovascular collapse.

1. Tension Pneumothorax

• Pathophysiology: Air enters the pleural space via a one-way valve, collapsing the ipsilateral lung and shifting mediastinal structures contralaterally, compressing the vena cava and halting venous return.
• Clinical Signs: Severe dyspnea, unilateral absent breath sounds, hyper-resonance, subcutaneous emphysema, hypoxia, hypotension, and contralateral tracheal deviation.
• Emergency Needle Decompression: Do not await X-ray confirmation.
  • Site Selection: 2nd intercostal space midclavicular line OR 4th/5th intercostal space anterior/mid-axillary line.
  • Technique: Insert a 14–18 gauge catheter over the top of the rib to avoid the intercostal neurovascular bundle, followed by tube thoracostomy.

2. Hemothorax

• Pathophysiology & Management: Blood accumulation in the pleural cavity causes dullness to percussion and shock. Insert a chest tube. Massive Hemothorax (> 10 to 15 mL/kg initial output or > 2 to 3 mL/kg/hr ongoing for 3 hours) requires emergency thoracotomy.

3. Flail Chest & Pulmonary Contusion

• Flail Chest: Two or more contiguous ribs fractured in two places create a free segment moving paradoxically.
• Pulmonary Contusion: Blunt impact causes parenchymal hemorrhage without rib fractures. Symptoms (hypoxia, crackles, patchy infiltrates) evolve over 24 to 48 hours.
• Nursing Care: Provide humidified oxygen, multimodal analgesia (intercostal nerve blocks or IV opioids), and judicious IV fluids to prevent contusion edema.

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Clinical Scenario: Pedestrian Struck with Multi-Cavity Trauma

An 8-year-old female (25 kg) is struck by an SUV while riding her bicycle (pGCS 9).

• Assessment: Trachea deviated left, right breath sounds absent with hyper-resonance. HR 172, BP 68/40, SpO2 81%. Right pupil 6 mm sluggish; left pupil 3 mm reactive.
• Emergency Interventions: Nurse assists with immediate needle decompression of right 2nd intercostal space midclavicular line (air rush, SpO2 rises to 94%, BP to 90/54). Endotracheal intubation performed with manual C-spine inline stabilization. HOB elevated 30 degrees midline. 3% NaCl bolus of 75 mL (3 mL/kg) infused for elevated ICP. STAT head CT and chest tube placed.