A nurse is teaching an in-service about cancer at a staff meeting. Which of the following information should the nurse include about adenocarcinoma?
"Pancreatic cancer doesn't usually present as an adenocarcinoma."
"Colorectal adenocarcinomas tend to have high treatment response rates."
"Many brain tumors are adenocarcinomas."
"Most prostate cancers are slow-growing adenocarcinomas."
The Correct Answer is D
A. "Pancreatic cancer doesn't usually present as an adenocarcinoma.": Pancreatic cancer most commonly arises from the exocrine glands and is typically classified as an adenocarcinoma. It is the most frequent histological type found in pancreatic malignancies.
B. "Colorectal adenocarcinomas tend to have high treatment response rates.": Treatment response in colorectal adenocarcinoma depends heavily on the stage at diagnosis. While early-stage tumors may respond well, advanced stages often have lower responsiveness and poorer outcomes.
C. "Many brain tumors are adenocarcinomas.": Primary brain tumors are typically glial in origin, such as astrocytomas or glioblastomas. Adenocarcinomas rarely originate in the brain and are more often found in epithelial tissues like the lungs, colon, or prostate.
D. "Most prostate cancers are slow-growing adenocarcinomas.": Prostate cancer most often originates from glandular tissue and is classified as an adenocarcinoma. These tumors commonly progress slowly, especially in older adults, and may be monitored for years without requiring aggressive treatment.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. 3% sodium chloride: A serum sodium level of 115 mEq/L is dangerously low, indicating severe hyponatremia. The nurse should anticipate that a hypertonic saline solution such as 3% sodium chloride will be prescribed to rapidly increase the sodium concentration in the blood and treat the underlying SIADH.
B. Dextrose 5% in 0.99% sodium chloride: This is an isotonic solution and would not be suitable for treating severe hyponatremia in SIADH, as it would not significantly increase sodium levels. Hypertonic saline solutions are more appropriate for severe cases of hyponatremia.
C. Dextrose 5% in 0.45% sodium chloride: This solution is hypotonic and could worsen hyponatremia by diluting the sodium further. It should not be used to treat SIADH with severely low sodium levels.
D. 0.9% sodium chloride: Normal saline (0.9% sodium chloride) is isotonic and would not correct the low sodium levels as effectively as hypertonic saline. While it is used in less severe cases, 3% sodium chloride is necessary in cases of severe hyponatremia.
Correct Answer is A
Explanation
A. Insulin resistance: HHS typically occurs in clients with type 2 diabetes who have some circulating insulin, but not enough to prevent severe hyperglycemia. Insulin resistance is a key feature, as it allows glucose levels to rise without triggering significant fat breakdown or ketone production.
B. Metabolic acidosis: Metabolic acidosis is more commonly seen in diabetic ketoacidosis (DKA) due to the accumulation of ketones. In HHS, acidosis is usually absent or only mild because fat breakdown is minimal.
C. Hypervolemia: HHS leads to profound dehydration due to osmotic diuresis caused by severe hyperglycemia. Clients are more likely to be hypovolemic rather than hypervolemic due to fluid losses.
D. Ketosis: Unlike DKA, HHS generally does not present with significant ketosis because the body retains enough insulin to prevent fat breakdown. The absence of ketosis is one of the key diagnostic differences between the two conditions.
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