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Related Experiment Video

Updated: Aug 14, 2025

Using a Combination of Indirect Calorimetry, Infrared Thermography, and Blood Glucose Levels to Measure Brown Adipose Tissue Thermogenesis in Humans
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EasyTBSA as a method for calculating total body surface area burned: a validation study.

Cindy D Colson1, Emily C Alberto1, Zachary P Milestone1

  • 1Division of Trauma and Burn Surgery, Children's National Hospital, Washington, DC, USA.

Emergency Medicine Journal : EMJ
|January 13, 2023
PubMed
Summary

The EasyTBSA smartphone app accurately estimates total body surface area (TBSA) burns, outperforming traditional methods like the Lund-Browder Chart and Rule of Nines for improved pediatric burn care.

Keywords:
EDburnsclinical assessmentemergency responderstriage

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Area of Science:

  • Medical Technology
  • Emergency Medicine
  • Pediatric Burn Care

Background:

  • Inaccurate total body surface area (TBSA) burn estimation impacts pediatric patient management.
  • Existing methods like Lund-Browder Chart and Rule of Nines have limitations in accuracy.
  • Smartphone applications offer a potential solution for precise burn size assessment.

Purpose of the Study:

  • To evaluate the accuracy of the EasyTBSA smartphone application for burn size estimation.
  • To compare EasyTBSA performance against established methods: Lund-Browder Chart, Rule of Nines, and Rule of Palms.
  • To determine if EasyTBSA improves TBSA estimation accuracy, particularly in children.

Main Methods:

  • Healthcare providers estimated burn sizes on manikins using EasyTBSA and three other methods.
  • Manikins represented various ages (infant, child, adult) and burn severities (small, medium, large).
  • Accuracy was determined by comparing estimated TBSA to actual TBSA measured via 3D scans; multivariable modeling was employed.

Main Results:

  • EasyTBSA demonstrated the highest accuracy in TBSA estimation (-0.01%, SD 3.59%).
  • The Rule of Palms (3.92%, SD 10.71%), Lund-Browder Chart (4.42%, SD 5.52%), and Rule of Nines (5.05%, SD 6.87%) showed lower accuracy.
  • EasyTBSA outperformed all other methods across different age groups and burn sizes.

Conclusions:

  • The EasyTBSA application shows potential for enhancing the accuracy of TBSA estimation.
  • Improved burn size assessment using EasyTBSA could lead to more appropriate initial management and resuscitation.
  • This technology may offer a valuable tool for healthcare providers managing burn injuries.