77 A Comparison of Large Tbsa Scald Versus Flame Burns in Young Children
Authors: Daniel Ashley , Miller Jenna , Brier Emily , Flint Jennifer , Thompson Marita , Aguayo Pablo , Patterson Kelli , Marx Daniel , Mallampalli Grace , Klein Justin , Vitale Lisa , Malaniak Mariah , Shanti Christina , Hodgman Erica , Gardner Rebecca , Garcia Alejandro 
Published: May 2023

Abstract

Introduction
It is generally accepted that children with large total body surface area (TBSA) flame burns have worse outcomes as compared to those with scald injury. Anecdotally, we have observed the opposite. We sought to compare outcomes of patients using data from the Pediatric Injury Quality Improvement Collaborative (PIQIC).

Methods
This multicenter, retrospective cohort study collected data from 4 pediatric hospitals participating in PIQIC over a 10 year period. Exclusion criteria were TBSA &lt;15% and mechanism not scald or flame. Patients were categorized by age in years: 0 to &lt;3, toddler; 3 to &lt;10, child; and age ≥ 10. Demographics, clinical features, and adverse events were collected. Models were controlled for percent full thickness burn.

Results
Due to small sample size of age &gt;10, this group was excluded. 164 patients were identified: 96 (59%) with scald and 68 (41%) were flame. Patients in the toddler group were mainly scalds (N=73, 58%) while the child group was mostly flame (N=52, 67%). Only 28% of scald patients had full-thickness burns compared to 67% of flames.
In the scald group, toddlers experienced significantly longer PICU LOS and mechanical ventilator (MV) days than the child group (13 vs. 5 MV days, p &lt; 0.001). Hospital LOS was significantly higher in the child group compared to toddlers. There was trend of higher incidence of sepsis, nosocomial infection, and abdominal catastrophe in toddlers. All mortalities were observed in the child group.
In flame patients, toddlers had no mortalities, cases of sepsis or abdominal catastrophe. Toddlers had significantly shorter hospital LOS (18 vs 25, p&lt; 0.001), PICU LOS (9 [1-14] vs 7 [2-18], p&lt; 0.001), and MV days (6 vs. 9, p&lt; 0.001). Older patients with flame burns had higher %TBSA and full-thickness burns.
Odds of mortality in both mechanisms was significantly increased for higher TBSA. Each 1% increase in TBSA related to an average 3% increase mortality (OR=1.03, 95% CI: (1.00, 1.06), P=0.04). Separating mechanisms, the model determined mortality was affected by age. While scalds had significantly reduced mortality (OR=0.05, 95% CI: (0.00, 0.057), P=0.02), each additional year of age increased mortality by 42% (OR=1.42, 95% CI: (1.07, 1.89), P=0.02). Each additional year of age resulted in an 18% reduction in nosocomial infection (OR=0.83 95% CI: (0.73,0.96), P=0.01).

Conclusions
Given the differences in hospital and PICU LOS, MV days, and complication rates, this study confirms that not all burns carry the same risks across age groups and mechanisms. Despite lower rates of full thickness burns, younger patients with scalds may have a longer PICU course, more time on the ventilator, and increased risk of sepsis, nosocomial infection, and abdominal catastrophe than similarly aged patients with flame burns or older patients with scalds.

Applicability of Research to Practice
Burn mechanism and patient age should be considered in addition to TBSA and burn thickness when caring for a critically ill patient.