Question 39 QMED05 - Machinist-Pump Technician

A crew member has suffered a burn on the arm. There is extensive damage to the skin with charring present. This is an example of what kind of burn?

A Lethal burn
B Dermal burn
C Second degree burn
D Third degree burn
AI Explanation

The Correct Answer is D **Why option D ("Third degree burn") is correct:** Third-degree (or full-thickness) burns are characterized by damage that extends through all layers of the skin (epidermis and dermis) and often involves underlying tissue, fat, or muscle. The description provided—"extensive damage to the skin with charring present"—is the classic presentation of a third-degree burn. Charring indicates that the tissue has been extensively damaged and appears black or white and leathery. Nerve endings in the burned area are often destroyed, meaning the area itself may feel numb. **Why the other options are incorrect:** * **A) Lethal burn:** "Lethal" describes the outcome (causing death), not the specific classification or depth of the burn injury. While a severe burn can be lethal, this term does not describe the physical characteristics or degree of the injury itself. * **B) Dermal burn:** This term is too general and typically refers to partial-thickness burns (first or second degree) where the dermis is involved but not completely destroyed. A burn involving charring is full-thickness, meaning it has gone beyond the dermis. * **C) Second degree burn:** Second-degree (or partial-thickness) burns are characterized by blistering, intense pain, redness, and swelling, affecting the epidermis and part of the dermis. While they cause significant damage, they do not typically involve the deep destruction and **charring** that defines a third-degree burn.

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