9.2 Pediatric Fluid Resuscitation, Vital Signs & Child Abuse/NAT Recognition

Pediatric Fluid Resuscitation, Vital Signs & Child Abuse/NAT Recognition

Caring for pediatric trauma patients requires strict precision in calculating weight-based fluid administration, recognizing age-appropriate vital signs, and identifying non-accidental trauma (NAT). Pediatric nurses play a pivotal role in initial shock resuscitation, vascular access execution, and safeguarding vulnerable pediatric populations through meticulous physical examination and mandatory reporting of suspected child abuse.

Pediatric Vital Sign Parameters & Physiological Baselines

Accurate assessment of pediatric vital signs requires comparing observed values against strict, age-defined normal ranges. A heart rate or respiratory rate that is normal for an infant signifies severe bradycardia or respiratory failure in a school-aged child.

When evaluating vital signs, nurses must account for baseline anxiety, pain, and hypothermia, but must never attribute persistent tachycardia solely to emotional distress in a pediatric trauma patient.

Vascular Access Priorities & Fluid Resuscitation Protocols

Establishing rapid vascular access is a cornerstone of pediatric trauma resuscitation. Due to peripheral vasoconstriction during shock, peripheral intravenous access can be extremely challenging.

Vascular Access Hierarchy & Intraosseous (IO) Access

Initial attempts should focus on establishing two large-bore peripheral IV lines (20-gauge to 22-gauge in older children; 22-gauge to 24-gauge in infants) in the upper extremities. However, pediatric trauma guidelines mandate that if peripheral IV access cannot be obtained within 90 seconds or after two attempts in a child demonstrating signs of shock or cardiac arrest, Intraosseous (IO) insertion must be performed immediately.

Preferred anatomical sites for IO placement in pediatric patients include:

• Proximal Tibia: Flattened anteromedial surface of the tibia, approximately 1 to 2 cm below and medial to the tibial tuberosity (primary site in infants and young children).
• Distal Tibia: Prominence of the medial malleolus, 1 to 2 cm proximal to the tip on the flat medial face of the tibia.
• Proximal Humerus: Greater tubercle of the humerus (primarily in older children where anatomical landmarks are easily palpable).

IO needles provide rapid access to the non-collapsible intramedullary venous plexus, allowing administration of all crystalloids, blood products, and resuscitation medications at rates comparable to central venous lines.

Isotonic Crystalloid Administration

Initial fluid resuscitation for pediatric hemorrhagic shock consists of weight-based boluses of warm isotonic crystalloid:

• Initial Crystalloid Bolus: 20 mL/kg of 0.9% Normal Saline or Lactated Ringer's administered rapid IV/IO push over 5 to 10 minutes.
• Reassessment: Following the 20 mL/kg bolus, the nurse must re-evaluate heart rate, capillary refill, mental status, peripheral pulse quality, and blood pressure.
• Repeat Administration: If physiological parameters remain impaired, a second (and potentially third) bolus of 20 mL/kg may be administered, up to a total of 40 to 60 mL/kg of crystalloid.

Target urine output demonstrating adequate end-organ renal perfusion is:

• Infants and Young Children: 1.0 to 2.0 mL/kg/hr
• Older Children and Adolescents: 0.5 to 1.0 mL/kg/hr

Pediatric Massive Transfusion Protocol (MTP)

If a child remains hemodynamically unstable after receiving 20 to 40 mL/kg of isotonic crystalloids, crystalloid infusion should be stopped, and blood transfusion must be initiated immediately:

• Packed Red Blood Cells (PRBCs): 10 to 20 mL/kg of uncrossmatched O-negative (or type-specific) PRBCs.
• Pediatric MTP Activation: In severe hemorrhagic shock, activate the pediatric massive transfusion protocol utilizing a balanced ratio of 1:1:1 (PRBCs, Fresh Frozen Plasma [FFP], and Platelets) or 10 mL/kg PRBCs, 10 mL/kg FFP, and 5 to 10 mL/kg Platelets.
• Resuscitation Complications: Massive blood product administration rapidly induces hypothermia, hypocalcemia (secondary to citrate binding of ionized calcium), and hyperkalemia (from stored PRBC hemolysis). Resuscitative blood warmers must be used, and ionized calcium levels must be monitored continuously, replacing calcium gluconate or calcium chloride as indicated.

Non-Accidental Trauma (NAT) & Child Abuse Recognition

Trauma nurses are legally mandated reporters required by law to report any suspicion of child abuse or non-accidental trauma (NAT) to child protective services (CPS) and law enforcement. Proof of abuse is not required; reasonable suspicion triggers the legal reporting requirement.

Physical Exam Markers & Pattern Injury Recognition

Identifying NAT requires a meticulous head-to-toe physical assessment and critical evaluation of whether observed physical injuries correlate with the provided historical mechanism:

1. Cutaneous Injury Patterns & TEN-4-FACED Clinical Decision Rule:

   • Accidental bruises in ambulatory children typically occur over bony prominences (shins, knees, forehead).
   • TEN-4-FACED Rule: Any bruising in the Torso, Ears, or Neck in children under 4 years of age, OR any bruise anywhere on an infant under 4 months of age (non-ambulatory), strongly indicates abuse.
   • Patterned injuries: Belt marks, loop marks from cords, handprint slap marks, bite marks, or human hand grasp marks on upper arms.

2. Thermal & Scald Burn Patterns:

   • Immersion Scald Burns: Sharply demarcated "glove-and-stocking" distribution on hands/feet, or a "doughnut" pattern on the buttocks with central sparing (caused by forced submersion into scalding water while the buttocks are pressed against the cooler tub bottom).
   • Absence of splash marks in immersion burns strongly differentiates them from accidental spill burns.
   • Contact burns matching specific objects (flat iron, curling iron, cigarette burns).

3. Skeletal Fracture Patterns:

   • Posterior Rib Fractures: Caused by forceful anteroposterior compression of the infant chest during violent shaking; virtually pathognomonic for child abuse.
   • Metaphyseal Corner Fractures ("Bucket-Handle" Fractures): Avulsion fractures of the long bone epiphyses caused by sudden twisting, pulling, or shaking of an extremity.
   • Multiple fractures in varying stages of healing, or complex/depressed skull fractures from low-height reported falls (e.g., "rolled off a 1-foot bed").

4. Abusive Head Trauma (AHT) / Shaken Baby Syndrome:

   • Classic triad: Subdural hematoma, severe cerebral edema, and widespread retinal hemorrhages.
   • Infants may present insidiously with unexplained lethargy, poor feeding, bulging fontanelle, seizures, or apnea without external signs of head trauma.

Diagnostic Workup, Documentation & Legal Responsibilities

When NAT is suspected, a standardized diagnostic workup is performed:

• Skeletal Survey: Complete 21-view radiographic skeletal survey mandatory for all children under 2 years of age with suspected NAT to identify occult fractures.
• Neuroimaging: Non-contrast head CT or brain MRI for suspected AHT or altered mental status.
• Abdominal Imaging: CT abdomen/pelvis to evaluate for occult visceral injuries (such as duodenal hematomas or pancreatic lacerations caused by direct blow to the abdomen).

Nursing Documentation Requirements:

• Record caregiver historical statements verbatim in quotation marks.
• Document exact timeline discrepancies or conflicting accounts between caregivers.
• Use objective, detailed body diagrams measuring bruise/burn dimensions, shape, color, and precise anatomical location.
• Never document personal opinions, accusations, or subjective conclusions.
• Record the time, name of individual, and agency when filing mandatory reports to CPS and law enforcement.