Pediatric patients in the transport environment are not small adults. The anatomic, physiologic, and pharmacologic differences are not trivial variations on adult medicine — they are fundamental differences that change how assessment findings are interpreted, how interventions are performed, and how quickly a stable patient can become critically unstable. Transport clinicians who work primarily with adults need to approach pediatric transports with a deliberately different framework.
Why physiology is different: the key principles.
Children have higher metabolic rates relative to their body size, which means they consume oxygen faster, produce more CO₂ per kilogram, and have less physiologic reserve before decompensation. A child who is compensating for shock maintains blood pressure through compensatory mechanisms longer than an adult — and then decompensates abruptly. This compensated-to-decompensated transition is the most dangerous characteristic of pediatric hemodynamics in the transport environment, because by the time hypotension is visible, the compensatory reserve is already exhausted.
Normal vital signs change substantially with age. What is normal in a neonate is tachycardia in an adult. What is a reassuring heart rate in a toddler is bradycardia in a teenager. Using adult normal ranges for pediatric patients leads to missed tachycardia (compensation for early shock), missed bradycardia (a late and ominous sign in pediatrics), and incorrect respiratory rate assessment. Age-appropriate vital sign reference cards or Broselow tape guidance are standard practice, not optional.
Weight estimation and length-based resuscitation.
Every drug dose, fluid volume, ET tube size, and equipment selection in pediatric resuscitation is weight-based. In transport, scales are not always available and parents may not know exact weight. The Broselow tape is the standard tool: measure the patient from crown to heel, read the weight estimate from the corresponding color band, and use the band to reference pre-calculated drug doses and equipment sizes. It is faster and more reliable than estimating from age alone, and more accurate than parental recall of weight in an emergency.
Formula-based weight estimation: weight (kg) ≈ (age in years + 4) × 2 for children 1–12 years. This is a backup when the Broselow tape is not available. It carries higher error than the tape and should not be used preferentially.
Airway: anatomic differences that change management.
The pediatric airway is smaller, more cephalad, and more anterior than the adult airway. The occiput is relatively larger in infants and young children, causing neck flexion in the supine position that closes the airway — a folded blanket under the shoulders restores a neutral sniffing position for airway management. The tongue is proportionally larger relative to the oral cavity, increasing the risk of obstruction. The epiglottis is more omega-shaped and floppy, making direct visualization more dependent on lifting it with the laryngoscope blade. The trachea is shorter, increasing the risk of right mainstem intubation after even modest tube advancement.
ET tube sizing: uncuffed tubes were historically standard for children under 8 years (the cricoid ring was considered the narrowest point and acted as a natural seal). Cuffed tubes are now accepted and often preferred in children over approximately 2 years, provided cuff pressure is monitored carefully (<20–25 cmH₂O). The Parker formula for uncuffed tube size: (age/4) + 4. For cuffed: (age/4) + 3.5. Broselow tape provides these calculations pre-computed.
Circulation and shock in pediatric patients.
Initial fluid resuscitation: 20 mL/kg isotonic crystalloid (normal saline or lactated Ringer’s) IV or IO, infused rapidly over 5–10 minutes. Reassess after the bolus and repeat if needed, up to a total of 60 mL/kg in the first hour for most pediatric shock presentations. In hemorrhagic shock, blood product resuscitation (1:1:1 pRBC:FFP:platelets) replaces crystalloid-heavy approaches at lower thresholds than in adults.
Intraosseous (IO) access is appropriate and should be attempted early when IV access is difficult in a critically ill child. Drug administration, blood product administration, and fluid resuscitation via IO are equivalent to IV in the acute setting. Common IO sites: proximal tibia (1–3 cm below the tibial tuberosity, medial), distal femur, and proximal humerus.
Hypoglycemia is more common in pediatric patients under physiologic stress and is more rapidly dangerous than in adults. Check glucose in every critically ill or injured child and treat aggressively: dextrose 0.5–1 g/kg IV (D10W at 5–10 mL/kg is preferred over D50 in children to avoid hyperosmolar injury).
Transport-specific pediatric considerations.
Securing the pediatric patient in transport is not optional and not simple. Infants require appropriate car seat or isolette restraint depending on age and condition. Children in car seats or transport seats must be secured with five-point harness systems calibrated to their weight. Hypothermia risk is higher in pediatric patients — smaller surface area to mass ratio allows heat loss more rapidly. Active warming is standard.
Family presence during transport: when operationally feasible, at least one parent or caregiver should accompany pediatric patients. This is not courtesy — it reduces patient anxiety, facilitates history-taking, and improves procedural tolerance. Brief the parent before transport on what to expect, what they may see, and how they can help.
The exam relevance.
CFRN pediatric questions test weight-based calculations, age-appropriate vital sign interpretation, airway anatomic differences, and recognition of compensated versus decompensated shock. The exam gives you a clinical scenario with pediatric vital signs and asks whether the patient is compensating or decompensating — the answer depends on knowing what normal looks like at that age. The framework above makes those calculations derivable rather than memorized — which is the only kind of pediatric knowledge that holds up when the patient in front of you is not the same weight, age, or presentation as the case you studied.