A nurse is providing education to a community group about burn prevention. Which of the following is an example of a first-degree burn?
Excessive scarring
Blistering from flames
Blackened dead skin
A sunburn
The Correct Answer is D
A. Excessive scarring:
Excessive scarring is not an example of a first-degree burn. It typically occurs in more severe burns that affect deeper layers of the skin, such as second-degree or third-degree burns. Second-degree burns extend into the dermis, while third-degree burns damage all layers of the skin and can lead to significant scarring. First-degree burns, on the other hand, only affect the outer layer of the skin (epidermis) and usually do not result in excessive scarring.
B. Blistering from flames:
Blistering from flames is more characteristic of a second-degree burn rather than a first-degree burn. Second-degree burns involve damage to both the epidermis and part of the dermis, which can result in blister formation. These burns are often caused by direct contact with flames, hot liquids, or steam.
C. Blackened dead skin:
Blackened dead skin is indicative of a third-degree burn, which is the most severe type of burn. Third-degree burns damage all layers of the skin, including the epidermis, dermis, and sometimes underlying tissues. The skin may appear charred or blackened, and these burns often require medical intervention, such as skin grafting, due to the extent of tissue damage.
D. A sunburn:
A sunburn is an example of a first-degree burn. It occurs due to overexposure to ultraviolet (UV) radiation from the sun, leading to redness, pain, and mild swelling of the skin. First-degree burns affect only the outer layer of the skin (epidermis) and typically heal within a few days without significant scarring or blistering. Applying soothing lotions, staying hydrated, and avoiding further sun exposure can help manage sunburns.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Body mass index (BMI) of 19:
A BMI of 19 falls within the normal weight range. While obesity (high BMI) is a known risk factor for surgical complications, including SSIs, having a lower BMI (underweight) like 19 may not directly increase the risk of SSIs. However, extreme malnutrition or low BMI due to underlying health conditions could potentially impact wound healing and immune function, indirectly contributing to infection risk.
B. History of deep vein thrombosis (DVT):
A history of deep vein thrombosis is a risk factor for surgical complications, including SSIs. Patients with a history of DVT may have impaired circulation or underlying vascular issues, which can affect tissue perfusion, wound healing, and increase the risk of infections.
C. Aged 55 years old:
Age is a risk factor for surgical complications, including SSIs. Older adults, typically defined as those aged 65 and above, may have reduced immune function, slower wound healing, and underlying health conditions that contribute to infection risk. While 55 years old is not considered advanced age in terms of surgical risk, older age in general is associated with a higher risk of complications.
D. Type 2 diabetes mellitus:
Type 2 diabetes mellitus is a significant risk factor for SSIs. Diabetes can impair immune function, delay wound healing, and increase susceptibility to infections. Poorly controlled blood sugar levels in diabetic patients can further exacerbate the risk of SSIs post-surgery.
Correct Answer is B
Explanation
A. Loose connective tissue:
Melanocytes are not typically found in loose connective tissue. Their primary location is within the epidermis, specifically in the basal layer, where they interact with keratinocytes to produce melanin and contribute to skin color. Loose connective tissue contains collagen and elastin fibers, as well as fibroblasts, but it does not house melanocytes.
B. Epidermis:
This is the correct answer. Melanocytes are primarily located in the basal layer of the epidermis, which is the deepest layer of the epidermis. These cells produce melanin, a pigment that helps protect the skin from UV radiation and determines skin color. Melanocytes are interspersed among keratinocytes in the epidermis and transfer melanin to keratinocytes to provide skin pigmentation.
C. Dermis:
The dermis is the layer of skin beneath the epidermis and consists of connective tissue, blood vessels, nerves, hair follicles, and sweat glands. While the dermis plays a crucial role in supporting and nourishing the epidermis, melanocytes are not primarily located in the dermis. They are confined to the basal layer of the epidermis.
D. Superficial fascia:
The superficial fascia, also known as the subcutaneous tissue or hypodermis, lies beneath the dermis and consists of adipose (fat) tissue and connective tissue. It provides insulation, energy storage, and cushioning for underlying structures. However, melanocytes are not typically found in the superficial fascia. They are restricted to the epidermis, specifically the basal layer, where they carry out their function of melanin production.
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