EMT Signs and Symptoms Practice Test

Severe burns are defined by a combination of airway risk, involvement of critical areas, and substantial burn size. The presence of respiratory involvement or inhalation injury means the airway is at or at risk of swelling, which dramatically increases danger and requires rapid airway assessment and management. Burns that affect critical areas—such as the face and airway, hands, feet, joints, or genitals—pose high risk for functional impairment and complications, elevating the injury’s severity. In addition, large burn sizes add to the seriousness: second-degree burns greater than about a quarter of the body’s surface area or third-degree burns greater than about 10% BSA are substantial enough to categorize the injury as severe. Together, these factors capture why a burn is considered severe, whereas simple minor blistering or absence of breathing involvement does not meet that threshold.