Burns can be classified by depth, mechanism of injury, extent, and associated injuries. The most commonly used classification is based on the depth of injury. The depth of a burn is usually determined via examination, although a biopsy may also be used. It may be difficult to accurately determine the depth of a burn on a single examination and repeated examinations over a few days may be necessary. In those who have a headache or are dizzy and have a fire-related burn, carbon monoxide poisoning should be considered. Cyanide poisoning should also be considered. Size Burn severity is determined through, among other things, the size of the skin affected. The image shows the makeup of different body parts, to help assess burn size. The size of a burn is measured as a percentage of total body surface area (TBSA) affected by partial thickness or full thickness burns. First-degree burns that are only red in color and are not blistering are not included in this estimation. Most burns (70%) involve less than 10% of the TBSA. There are a number of methods to determine the TBSA, including the Wallace rule of nines, Lund and Browder chart, and estimations based on a person's palm size. The rule of nines is easy to remember but only accurate in people over 16 years of age. More accurate estimates can be made using Lund and Browder charts, which take into account the different proportions of body parts in adults and children. The size of a person's handprint (including the palm and fingers) is approximately 1% of their TBSA. Severity +American Burn Association severity classification Minor Moderate Major Adult 20% TBSA Young or old 10% TBSA 5% full thickness burn High voltage injury High voltage burn Possible inhalation injury Known inhalation injury Circumferential burn Significant burn to face, joints, hands, or feet Other health problems Associated injuries To determine the need for referral to a specialized burn unit, the American Burn Association devised a classification system. Under this system, burns can be classified as major, moderate, and minor. This is assessed based on a number of factors, including total body surface area affected, the involvement of specific anatomical zones, the age of the person, and associated injuries. Minor burns can typically be managed at home, moderate burns are often managed in a hospital, and major burns are managed by a burn center. Severe burn injury represents one of the most devastating forms of trauma. Despite improvements in burn care, patients can be left to suffer for as many as three years post-injury.
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