A nurse is assessing a client who reports a nevus that has increased in size and an irregularly shaped lesion that varies in color. These findings are consistent with which of the following medical diagnoses?
Squamous cell carcinoma
Malignant melanoma
Kaposi's sarcoma
Basal cell carcinoma
The Correct Answer is B
Choice A reason:
Squamous cell carcinoma typically presents as a rough, scaly, red patch, open sore, or raised growth with a central depression, often on sun-exposed areas of the body. While it can appear as a lesion that varies in color, it is not commonly associated with a nevus that has increased in size.
Choice B reason:
Malignant melanoma is associated with changes in preexisting nevi, such as an increase in size and variations in color. It often appears as a mole that changes in color, size, or feel and may have irregular edges. The description of the lesion provided by the client is characteristic of malignant melanoma, making this the correct diagnosis.
Choice C reason:
Kaposi's sarcoma is a cancer that forms in the lining of blood and lymph vessels and typically appears as patches of abnormal tissue on the skin or mucous membranes. These lesions are usually red or purple and look similar to bruises¹. They are not typically described as nevi that increase in size or lesions that vary in color.
Choice D reason:
Basal cell carcinoma often appears as a slightly transparent bump on the skin, though it can take other forms. It usually presents as a pearly white or pink bump on white skin, or a brown or black bump on darker skin, and is most often found on sun-exposed areas. It is not typically associated with a nevus that has increased in size or an irregularly shaped lesion that varies in color.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice a) Raloxifene:
Raloxifene is part of a class of drugs known as selective estrogen-receptor modulators (SERMs). It works by imitating the beneficial effects of the hormone estrogen on your bones, helping to prevent bone loss and improve density. Therefore, it is used in the prevention and treatment of osteoporosis.
Choice b) Calcitonin:
Calcitonin is a hormone that a person’s thyroid gland produces. It helps regulate the amount of calcium in the body. For the treatment of postmenopausal osteoporosis, scientists typically extract calcitonin from salmon. This is because salmon calcitonin has a much higher potency than human calcitonin. Osteoclasts are cells in the body that degrade bone. Calcitonin can inhibit osteoclasts. This helps slow the loss of bone density and increases bone mass, hindering the progression of osteoporosis.
Choice c) Allopurinol:
Allopurinol is primarily used to treat gout and certain types of kidney stones. It is not typically used in the prevention or treatment of osteoporosis.
Choice d) Levothyroxine:
Levothyroxine is used to treat hypothyroidism (underactive thyroid). It is not typically used in the prevention or treatment of osteoporosis. However, if you are prescribed levothyroxine you should have regular blood tests, at least once a year, to ensure your thyroid hormone levels are not too high. Continuous high thyroid hormone levels may lead to developing or worsening of low bone density and osteoporosis.
Correct Answer is C
Explanation
Choice A reason:
Lightheadedness is generally not an indication of effective treatment for dehydration. It is often a symptom of dehydration itself, as it can result from decreased blood volume and reduced blood flow to the brain. Effective rehydration should alleviate symptoms like lightheadedness, not present as an indication of it.
Choice B reason:
Decreased pulse pressure may indicate a drop in the volume of blood circulating through the body, which is not a sign of effective rehydration. Pulse pressure is the difference between systolic and diastolic blood pressure readings, and a narrow pulse pressure can be a sign of hypovolemia, or low blood volume, often due to dehydration.
Choice C reason:
Urine output of 75 mL in 1 hr can be considered within the normal range of urine output for an adult, which is typically about 0.5 to 1 mL/kg/hr⁵. This indicates that the kidneys are functioning and the body is excreting waste, suggesting effective rehydration.
Choice D reason:
A urine specific gravity of 1.038 is higher than the normal range of 1.005 to 1.030[^10^]. This indicates concentrated urine, which is commonly seen in dehydration as the body attempts to conserve water. Therefore, this is not an indication of effective treatment for dehydration.
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