Burns Classification


Article Author:
Rachel Warby


Article Editor:
Christopher Maani


Editors In Chief:
David Tauber


Managing Editors:
Orawan Chaigasame
Carrie Smith
Abdul Waheed
Frank Smeeks
Kristina Soman-Faulkner
Benjamin Eovaldi
Radia Jamil
Sobhan Daneshfar
Saad Nazir
William Gossman
Pritesh Sheth
Hassam Zulfiqar
Navid Mahabadi
Steve Bhimji
John Shell
Matthew Varacallo
Ahmad Malik
Mark Pellegrini
James Hughes
Beata Beatty
Hajira Basit
Phillip Hynes


Updated:
3/16/2019 10:57:21 AM

Definition/Introduction

A burn takes place when the skin comes into contact with a heat source.[1] Burns can occur from many different sources. The most common sources that cause burns are fire/flame, scalds, hot objects, electrical, and chemical agents, respectively.[2] Injuries related to a burn are highly variable, as is their severity. Morbidity and mortality tend to increase as the surface area of the burn increases.[3] It is vital to classify a burn accurately, as it can help determine the outcome, as well as guide initial management.[2] The skin location, the degree of temperature, and duration are contributing factors to the severity of the burn. There is a synergistic effect between the temperature and duration of exposure.[4] Skin exposure to 140 degrees Fahrenheit (60 degrees Celsius) for 10 seconds can cause a full-thickness burn.[1]

Issues of Concern

The basis of burn classification is depth. When examining a burn, there are four components needed to assess depth: appearance, blanching to pressure, pain, and sensation.[2] Burns can be categorized by thickness according to the American Burn Criteria using those four elements. Burn injuries tend to be a dynamic process. Some burns, especially partial-thickness, may progress over 2 to 4 days, peaking at day 3.[4]

Superficial (first-degree) involves the epidermis of the skin only. It appears pink to red, there are no blisters, and it is dry. It is moderately painful. Superficial burns heal without scarring within 5 to 10 days.[1][4]

Superficial partial-thickness (second-degree) involves the superficial dermis. It appears red with blisters and is wet. The erythema blanches with pressure. The pain associated with superficial partial-thickness is severe. Healing typically occurs within 3 weeks with minimal scarring.[1][4]

Deep partial-thickness (second-degree) involves the deeper dermis. It appears yellow or white, is dry, and does not blanch with pressure. There is minimal pain due to a decreased sensation. Healing occurs in 3 to 8 weeks with scarring present.[1][4]

Full-thickness (third-degree) involves the full thickness of skin and subcutaneous structures. It appears white or black/brown. With pressure, no blanching occurs. The burn is leathery and dry. There is minimal to no pain because of decreased sensation. Full-thickness burns heal by contracture and take greater than 8 weeks. Full-thickness burns require skin grafting.[1][4]

Clinical Significance

Burns are a common injury seen in emergency departments around the world.[3] Even as emergency management improves, burns continue to have significant morbidity and mortality. Burn treatments, such as intravenous fluids and surgical options, are based upon the classification of the burn. It is essential to accurately classify burns to optimize treatment and provide an accurate prognosis.[5][6]


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Burns Classification - Questions

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How is a burn injury that involves the entire epidermis and the upper layer of the dermis classified?



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A 17-year-old male presents with a steam burn on his right forearm from his truck's radiator. The burn appears pinkish-white, has a hemorrhagic blister, and is moist and pliable. His capillary refill is sluggish. What type of burn is this?



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Burn classification involves the probable depth of the injury sustained from the burn. Guidelines assist with this estimation. Which of the following correctly describe the classification of burns? Select all that apply.



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Burns Classification - References

References

Tolles J, Emergency department management of patients with thermal burns. Emergency medicine practice. 2018 Feb;     [PubMed]
Toussaint J,Singer AJ, The evaluation and management of thermal injuries: 2014 update. Clinical and experimental emergency medicine. 2014 Sep;     [PubMed]
Vivó C,Galeiras R,del Caz MD, Initial evaluation and management of the critical burn patient. Medicina intensiva. 2016 Jan-Feb;     [PubMed]
Evers LH,Bhavsar D,Mailänder P, The biology of burn injury. Experimental dermatology. 2010 Sep;     [PubMed]
Hautier A, [Minor burn outpatient management]. La Revue du praticien. 2018 Dec     [PubMed]
Nicolas C,Maréchal O, [Severe burned patient rehabilitation]. La Revue du praticien. 2018 Dec     [PubMed]

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