A 38-year-old male is brought into the Emergency Department by ambulance after a car explosion while working in his garage. He was trapped under the hood momentarily and pulled out by a neighbor. He is unconscious, and full-thickness burns are visible on his anterior torso, both arms, and part of his face. Based on the assessment and wound appearance, what type of burn is this?

Rationale: A. First-degree burns are superficial and involve only the epidermis, presenting as red, painful skin without blisters. This patient’s burns are far more severe and involve deeper structures, so first-degree is incorrect. B. Third-degree (full-thickness) burns involve the epidermis and dermis, resulting in charred, leathery, painless skin with eschar formation. While the patient shows these features, the presence of exposed muscle and bone indicates the injury extends beyond the dermis, making third-degree incomplete for this scenario. C. Second-degree (partial-thickness) burns involve the epidermis and part of the dermis, presenting with blisters, red or moist skin, and pain. This patient’s skin is charred, black, dry, and painless, which is inconsistent with partial-thickness burns. D. Fourth-degree burns are correct because they extend beyond the dermis into muscle, tendons, or bone. The patient has areas exposing muscle and bone, no pain in those areas, and charred, leathery eschar, which are classic findings for fourth-degree burns. These burns are life-threatening and require immediate airway management, fluid resuscitation, and surgical intervention.