A nurse is caring for a client with suspected pheochromocytoma. The nurse recognizes that which of the following is the priority action?
Obtain hourly glucose levels
Prepare client for a CT scan
Request order for serum calcium levels
Monitor Blood Pressure
The Correct Answer is D
A. Monitoring glucose levels may be necessary, as pheochromocytoma can cause hyperglycemia, but it is not the immediate priority.
B. A CT scan may be part of the diagnostic process to locate the adrenal tumor, but the priority is to control blood pressure first due to the risk of severe hypertensive crisis.
C. Serum calcium levels are not directly related to pheochromocytoma and are not a priority action.
D. Monitoring blood pressure is critical, as pheochromocytoma causes episodes of severe hypertension, which can lead to life-threatening complications.
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Correct Answer is B
Explanation
A. Insufficient insulin production is related to diabetes mellitus, not Cushing's syndrome.
B. Long-term use of glucocorticoids is a well-known exogenous cause of Cushing's syndrome, as it leads to excess cortisol in the body.
C. Adrenal insufficiency refers to a deficiency of adrenal hormones and would not cause Cushing's syndrome, which is characterized by excess hormones.
D. Overproduction of growth hormones is associated with acromegaly or gigantism, not Cushing's syndrome, which primarily involves excess cortisol.
Correct Answer is A
Explanation
A. Miotic medications work by constricting the pupil, which opens the trabecular meshwork and facilitates the drainage of aqueous humor, thus lowering intraocular pressure in clients with glaucoma.
B. Miotics do not dilate the pupil; they constrict it. Dilation would actually increase intraocular pressure, which is not therapeutic in glaucoma.
C. While these medications do affect eye muscles, they do not specifically prevent blurred vision; their primary effect is on eye pressure.
D. Miotics do not block nerve responses; they work by direct action on the eye muscles to promote fluid drainage and reduce pressure.