A staff nurse is teaching a client who has secondary hypothyroidism about the disease process. The client asks the nurse what causes secondary hypothyroidism. Which of the following responses should the nurse make?
"It is caused by the overproduction of T3, T4, and calcitonin by the thyroid gland."
"It is caused by the lack of production of adrenocorticotropic hormone by the pituitary gland."
"It is caused by the lack of production of thyroid stimulating hormone by the pituitary gland."
"It is caused by the lack of production of aldosterone by the adrenal gland."
The Correct Answer is C
A. Secondary hypothyroidism is characterized by insufficient production of thyroid hormones (T3 and T4) due to inadequate stimulation from the pituitary gland, not due to overproduction. Overproduction of thyroid hormones would typically be associated with hyperthyroidism, not hypothyroidism.
B. Adrenocorticotropic hormone (ACTH) stimulates the adrenal glands to produce cortisol. A deficiency in ACTH would lead to adrenal insufficiency or Addison's disease, not secondary hypothyroidism.
Secondary hypothyroidism specifically involves a deficiency in thyroid-stimulating hormone (TSH), not ACTH.
C. Secondary hypothyroidism is caused by inadequate production of thyroid-stimulating hormone (TSH) by the pituitary gland. TSH is necessary for stimulating the thyroid gland to produce thyroid hormones (T3 and T4). When the pituitary gland does not produce enough TSH, the thyroid gland is not adequately stimulated, leading to low levels of thyroid hormones in the blood.
D. Aldosterone is a hormone produced by the adrenal glands that helps regulate sodium and potassium levels, as well as blood pressure. A deficiency in aldosterone is associated with conditions such as
Addison’s disease or primary adrenal insufficiency, not secondary hypothyroidism. Secondary
hypothyroidism specifically relates to issues with TSH production, not aldosterone.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Hypernatremia (elevated sodium levels) is not a common sign of Addisonian crisis. In Addisonian crisis, the lack of aldosterone leads to sodium loss, which often results in hyponatremia (low sodium levels) rather than hypernatremia. The patient might also experience dehydration and electrolyte imbalances, but hypernatremia is not typical in this scenario.
B. Fluid volume overload is not characteristic of Addisonian crisis. Instead, Addisonian crisis often leads to fluid volume deficit due to the loss of aldosterone, which impairs sodium and water retention. This can result in dehydration and low blood volume rather than fluid overload.
C. Hypokalemia (low potassium levels) is not typically associated with Addisonian crisis. In fact, the lack of aldosterone in Addisonian crisis leads to potassium retention, resulting in hyperkalemia (elevated potassium levels). Therefore, monitoring for hypokalemia is not relevant in the context of Addisonian crisis following a bilateral adrenalectomy.
D. Hypoglycemia (low blood glucose levels) is a key sign of Addisonian crisis. Cortisol plays a crucial role in glucose metabolism and maintaining blood glucose levels. With the loss of cortisol production after a bilateral adrenalectomy, patients may experience hypoglycemia, which can be a critical indicator of Addisonian crisis.
Correct Answer is B
Explanation
A. Automatically switching to liquid nutrition without assessing the client’s tolerance and needs may not be the most appropriate first step. It’s important to consider the client’s preferences, nutritional requirements, and overall ability to tolerate different types of food.
B. This is a highly appropriate and commonly recommended intervention for clients experiencing nausea and weight loss due to chemotherapy. Small, frequent meals can help manage nausea better than large meals and ensure a more consistent intake of calories and nutrients.
C. Eating one large meal per day is generally not advisable for clients with nausea, as it can exacerbate feelings of fullness and discomfort. Large meals may increase nausea and make it more difficult for the client to consume adequate nutrients. Small, frequent meals are generally better tolerated and more effective for managing nausea and ensuring consistent nutrient intake.
D. Inserting a nasogastric (NG) tube and administering tube feedings is a more invasive measure and is usually considered only if oral intake is severely compromised and other interventions have been ineffective. Tube feedings are appropriate for clients who cannot meet their nutritional needs through oral intake due to severe nausea, vomiting, or other conditions.
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