8.1 Pediatric Trauma Resuscitation & Anatomical Vulnerabilities

8.1 Pediatric Trauma Resuscitation & Anatomical Vulnerabilities

Trauma is the leading cause of morbidity and mortality in children over one year of age. Emergency nurses caring for pediatric trauma patients must recognize that unique pediatric anatomical and physiological characteristics alter injury patterns, mechanisms of shock, and response to resuscitation compared to adults.

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Anatomical & Physiological Vulnerabilities in Children

1. Head-to-Body Ratio & Cervical Spine

• Proportionately Larger Head: Children under four years possess a larger head relative to total body mass, elevating their center of gravity. This predisposes infants and toddlers to head-first impacts during falls and motor vehicle collisions.
• Cervical Spine Fulcrum: The anatomical fulcrum of the pediatric cervical spine is located higher (at C1–C3 in infants versus C5–C6 in adults). Undeveloped neck musculature and hypermobile ligaments increase the risk for cervical spine distraction injuries and SCIWORA.
• Prominent Occiput: Placing a young child flat on a rigid backboard causes passive cervical flexion, compromising the airway. Elevating the torso with a 1–2 cm pad beneath the shoulders maintains neutral spinal alignment.

2. Thoracic Wall Compliance & Internal Exposure

• Flexible Skeleton: Cartilage-rich ribs create a highly compliant thoracic cage. While absorbing kinetic energy without fracturing, the chest wall transmits impact forces directly to underlying organs.
• Pulmonary Contusion Risk: Severe pulmonary contusions frequently occur without rib fractures. Rib fractures in an infant or young child signify extreme force or non-accidental trauma (NAT).

3. Abdominal & Pelvic Structure

• Thin Abdominal Wall: Children have minimal subcutaneous fat and thin abdominal musculature. Blunt force from handlebar impacts or lap belts is transmitted directly to internal organs.
• Exposed Solid Organs: The pediatric liver and spleen are proportionately larger and extend below the costal margin, increasing vulnerability to direct laceration.
• Shallow Pelvis: The bladder occupies an abdominal position until puberty, making full bladders susceptible to rupture from blunt abdominal impact.

4. Thermal & Metabolic Vulnerability

• Body Surface Area (BSA): A high BSA-to-mass ratio accelerates core heat loss. Hypothermia impairs myocardial contractility and triggers severe trauma-induced coagulopathy.

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The Pediatric Trauma Score (PTS)

The Pediatric Trauma Score (PTS) is a rapid field and emergency department triage tool designed to evaluate injury severity and predict mortality risk. Six parameters are assigned values of +2 (minor/none), +1 (moderate), or -1 (severe).

Clinical Triage Thresholds

• Total PTS Range: -6 to +12.
• PTS > 8: Associated with > 99% survival rate.
• PTS ≤ 8: Critical triage threshold. A score of 8 or lower indicates high risk of mortality and severe morbidity, mandating immediate triage or transfer to a Level 1 Pediatric Trauma Center.
• PTS ≤ 0: Associated with high mortality (> 20% to 100%).

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Primary Trauma Survey (C-ABCDE Approach)

The primary trauma survey systematically identifies and corrects life-threatening conditions. Massive external bleeding triggers the C-ABCDE sequence.

1. C - Catastrophic Hemorrhage & Spinal Restriction

• Compress major bleeding sources using direct pressure or tourniquets. Maintain manual inline cervical spine stabilization with torso padding for children under eight years.

2. A - Airway Maintenance

• Evaluate patency. Pediatric anatomical nuances include a large tongue, superior/anterior larynx (C3–C4), and narrow subglottic cricoid ring. Perform jaw-thrust maneuver without head tilt. Insert oral airway (OPA) if unconscious, or nasopharyngeal airway (NPA) if conscious without facial fractures.

3. B - Breathing and Ventilation

• Inspect chest movement, work of breathing, and tracheal position. Auscultate breath sounds in mid-axillary lines. Administer 100% oxygen via non-rebreather mask. If ventilation is inadequate, initiate Bag-Valve-Mask (BVM) ventilation and decompress the stomach with an oral gastric (OG) tube.

4. C - Circulation with Hemorrhage Control

• Assess capillary refill (< 2 seconds), central/peripheral pulses, and mental status. Physiological Compensation: Intense tachycardia and peripheral vasoconstriction preserve normal blood pressure despite 30% to 35% blood volume loss. Hypotension is a late sign of decompensated shock.
• Vascular Access & Fluids: Obtain two peripheral IVs (20–22G) or insert an Intraosseous (IO) needle within 90 seconds if IV access fails. Administer 10 to 20 mL/kg of warm isotonic crystalloid over 5 to 20 minutes. If shock persists after 40 mL/kg crystalloid, initiate 10 mL/kg PRBC transfusion.

5. D - Disability (Neurological Status)

• Assess consciousness via AVPU or Pediatric Glasgow Coma Scale (pGCS). Check pupil size and reactivity; unilateral fixed dilation indicates acute intracranial herniation.

6. E - Exposure & Environmental Control

• Fully undress the child to inspect hidden injuries. Maintain warm ambient temperature, apply forced-air warmers, and infuse warmed fluids to prevent hypothermia.

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Secondary Trauma Survey (FGHI Approach)

• F - Full Set of Vitals, Family Presence & Interventions: Monitor ECG/pulse oximetry; insert Foley catheter if no perineal blood.
• G - Give Comfort Measures: Provide non-pharmacologic comfort and IV analgesia (fentanyl 1 mcg/kg).
• H - History & Physical: Obtain AMPLE history (Allergies, Medications, Past history, Last meal, Events) and head-to-toe examination.
• I - Inspect Posterior Surfaces: Perform manual log-roll with inline spinal stabilization to inspect the back and spine.

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Clinical Scenario: High-Impact Motor Vehicle Collision

A 4-year-old male (16 kg) arrives via EMS following a high-speed collision as a restrained passenger.

• Initial Assessment: Irritable, HR 168, BP 94/62, RR 38, capillary refill 4 seconds, weak pulses. Seatbelt sign across lower abdomen. PTS = +8 (Weight +1, Airway +2, BP +1, CNS +1, Wound +1, Skeletal +2).
• Nursing Actions: Maintained neutral C-spine alignment with torso pad, applied high-flow oxygen, established IO access, and infused a 320 mL (20 mL/kg) warm normal saline bolus via push-pull technique. Reassessment showed HR 132, capillary refill 2 seconds, and robust pulses.