What is the Pediatric Trauma Score?
The Pediatric Trauma Score (PTS) is a structured clinical index used to summarize how severely a child appears to be injured at the time of first assessment after trauma. It combines six domains that reflect size, airway control, circulation, brain function, skeletal injury, and skin wounds. Each domain is assigned one of three levels, scored as −1, +1, or +2 points. The six values are added to produce a total between −6 and +12. Higher totals generally describe children with more stable physiology and less extensive injury on presentation; lower totals describe greater physiologic compromise or more serious anatomic injury patterns in historical pediatric trauma studies.
The PTS was introduced to give clinicians and prehospital providers a rapid, repeatable way to communicate severity when caring for injured children. It predates many modern imaging-heavy workflows but remains a teaching standard and a common anchor for discussion of pediatric field and emergency department triage. It is not a substitute for examination, imaging when indicated, serial reassessment, or institutional protocols.
Who is it for?
The PTS is intended for pediatric trauma patients, typically described as children under 18 years of age, at initial contact or early ED evaluation. It can be applied in the field, during transport, or at triage. Because children compensate and then deteriorate quickly, the score is most informative when recorded early and repeated if mental status, breathing, perfusion, or bleeding changes.
The six components
Every category captures the worst reasonable clinical finding for that domain at the moment of scoring. You choose one option per row and sum the points.
Weight
Weight acts as a proxy for age and reserve. Children under about 10 kg often have less cardiovascular reserve and may be injured by mechanisms that differ from older children. Scoring uses discrete bands: favorable weight receives +2, intermediate +1, and the smallest band −1.
Airway status
This reflects whether the child maintains a patent airway spontaneously and whether it could be kept open with positioning and basic maneuvers, versus needing immediate definitive airway management. A normal airway without concern scores highest; a maintainable but threatened airway scores in the middle; an unmaintainable airway scores lowest.
Systolic blood pressure
Blood pressure estimates perfusion. When a properly sized cuff is unavailable, the original scheme allows correlating palpable pulses with approximate pressure ranges: pulse at the wrist aligns with higher perfusion pressure; pulse only at the groin aligns with an intermediate range; absence of a palpable pulse aligns with severe hypotension or circulatory arrest. This substitution is helpful in noisy environments but should be interpreted with caution and repeated when a reliable measurement is possible.
Central nervous system
Mental status ranges from awake and interactive, through obtunded or brief loss of consciousness, to coma or decerebrate posturing. Lower scores here raise concern for intracranial injury and demand heightened monitoring even when other domains look reassuring.
Skeletal injury
This summarizes musculoskeletal trauma from none, through isolated closed fractures, to open or multiple fractures. Open or multiple fractures reduce the score because they associate with higher energy transfer, blood loss, infection risk, and need for operative care.
Cutaneous wounds
Skin injury is graded from none, through minor abrasions or small lacerations, to major soft-tissue damage or penetrating wounds. Penetrating and large wounds lower the score because they may indicate deeper injury to vessels, viscera, or the thoracoabdominal cavity.
Scoring table
Each row contributes −1, +1, or +2 to the total.
| Domain | +2 | +1 | −1 |
|---|---|---|---|
| Weight | > 20 kg | 10–20 kg | < 10 kg |
| Airway | Normal | Maintainable | Unmaintainable |
| Systolic BP | > 90 mmHg (or pulse palpable at wrist) | 50–90 mmHg (or pulse palpable at groin) | < 50 mmHg (or no palpable pulse) |
| CNS | Awake | Obtunded / loss of consciousness | Coma / decerebrate posturing |
| Skeletal injury | None | Closed fracture | Open or multiple fractures |
| Cutaneous wounds | None | Minor | Major or penetrating |
Total PTS = sum of all six assigned values. Possible range: −6 to +12.
Interpreting the total
In classical PTS cohorts, a total below 8 identifies a group with higher concern for serious injury and higher mortality than children scoring 8 or above. That threshold is widely used in education and triage discussions. It should not be read as a rigid rule in isolation: a child with PTS at or above 8 may still have injuries that require intervention, and clinical judgment, mechanism, and evolving findings remain decisive.
When the score is low, teams often prioritize rapid assessment, hemorrhage control, neuroprotection principles as appropriate, and alignment with regional pediatric trauma center referral policies when transfer is safe and beneficial. When the score is higher, vigilance still matters because physiologic compensation in children can mask deterioration.
Where the PTS fits in workflow
Common uses include succinct handoffs between EMS and hospital staff, documentation of baseline severity, and serial comparison after interventions such as fluid resuscitation, airway management, or bleeding control. Repeating the score after major changes helps track response to treatment and signals when escalation is needed.
Strengths and limitations
Strengths: The PTS is quick, requires no laboratory data, and translates easily across prehospital and hospital settings. It encourages a structured scan of airway, breathing, circulation, disability, and exposure-related injury patterns.
Limitations: Like any summary score, it cannot capture every injury pattern. Some mechanisms (for example, certain blunt abdominal injuries) may be underweighted relative to their surgical importance. Scores depend on accurate assignment of categories under stress, and they change with time. The PTS complements, rather than replaces, structured trauma primary and secondary surveys, imaging pathways, and institutional triage criteria.
Clinical pearls
- Score early, then reassess after any significant change in vitals, mental status, or findings.
- Use the pulse surrogates for blood pressure only when measurement is impractical, and obtain a cuff pressure when feasible.
- Treat abnormal airway, breathing, or perfusion immediately; the numeric score should not delay lifesaving interventions.
- Integrate mechanism of injury, age-specific normal vital signs, and family or witness history with the PTS.