A 32-year-old firefighter received second-degree burns on the anterior and posterior trunk and on both arms. Using the rule of nines, which of the following estimates best approximates the percentage of burn surface area?

A. Dermal thickness burn is not a standard classification for burns.

B. A full-thickness burn extends through the entire dermis and often involves the underlying tissues, which is not consistent with redness and blistering.

C. Based on the symptoms described – redness and blistering – the depth of burn experienced is consistent with a second-degree burn, also known as a partial-thickness burn. This type of burn affects not only the outer layer of skin, known as the epidermis, but also extends into the dermis, which is the second layer of skin.

D. Deep partial-thickness burns affect not only the epidermis but also the deeper layer of the skin, the dermis, and they do not typically blister immediately.

A. Scar tissue serves to restore structural integrity to damaged areas, providing a scaffold for tissue repair, though it does not have the same functionality as the original tissue.

B. Secondary intention refers to the healing process of wounds that are not closed (such as ulcers or infected wounds), not the purpose of scar tissue.

C. Primary intention involves healing with minimal tissue loss (e.g., surgical wounds), and while scar tissue may form, the main purpose is not to restore it.

D. Metaplasia refers to the transformation of one cell type to another, not the formation of scar tissue.