A nurse is caring for a client who has hypokalemia, hyperglycemia, and hypertension. A diagnosis of Cushing syndrome is suspected. Which of the following tests would the nurse anticipate the health care provider will order to help confirm the diagnosis of Cushing syndrome?
Radioactive iodine uptake test
24-hour cortisol urine study
Adrenocorticotropic hormone (ACTH) stimulation test
Edrophonium (Tensilon) test
The Correct Answer is B
A. Radioactive iodine uptake test: This test is used to assess thyroid function and diagnose thyroid disorders, such as hyperthyroidism. It is not used to diagnose Cushing syndrome.
B. 24-hour cortisol urine study: This test measures cortisol levels in the urine over a 24-hour period and is commonly used to diagnose Cushing syndrome by evaluating elevated cortisol production.
C. Adrenocorticotropic hormone (ACTH) stimulation test: This test evaluates adrenal function and is typically used to assess adrenal insufficiency rather than Cushing syndrome.
D. Edrophonium (Tensilon) test: This test is used to diagnose myasthenia gravis, not Cushing syndrome. It evaluates the effect of the medication on muscle strength.
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Related Questions
Correct Answer is D
Explanation
A. They are more prone to hyperthermia and may require cooling measures: Hypothyroidism typically leads to hypothermia (lower body temperature) rather than hyperthermia. Clients with hypothyroidism are more likely to experience difficulty maintaining normal body temperature.
B. Their levothyroxine should be held for 3 days prior to and after the surgery: Levothyroxine should not be held before or after surgery without specific guidance from the healthcare provider. Maintaining consistent thyroid hormone levels is crucial for clients with hypothyroidism.
C. They are at risk of developing tachycardia and should be given propranolol: Hypothyroidism is more commonly associated with bradycardia (slow heart rate) rather than tachycardia (fast heart rate). Propranolol is used to manage symptoms of hyperthyroidism, not hypothyroidism.
D. They are more sensitive to the effects of opioids and may require lower doses: Clients with hypothyroidism often have a reduced metabolic rate, which can increase their sensitivity to medications, including opioids. Therefore, they may require lower doses of opioids to avoid adverse effects.
Correct Answer is B
Explanation
A. Excess mineralocorticoids: Mineralocorticoids primarily affect electrolyte and fluid balance. While excess mineralocorticoids can cause hypertension and fluid retention, they are not directly responsible for hirsutism or acne.
B. Excess adrenal androgens: Cushing syndrome can lead to elevated levels of adrenal androgens, which are responsible for hirsutism (excessive hair growth) and acne due to their androgenic effects.
C. Excess thyroid hormone: Thyroid hormone imbalances can affect various body systems, but they are not directly related to the development of hirsutism or acne seen in Cushing syndrome.
D. Excess glucocorticoids: While excess glucocorticoids are characteristic of Cushing syndrome and can cause a range of symptoms, hirsutism and acne are specifically due to excess adrenal androgens rather than glucocorticoids.
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