Nokea
Steroid hormones:
- A. require a second messenger.
- B. are secreted by the adrenal cortex.
- C. are secreted by the posterior pituitary.
- D. are secreted by the pancreas.
Correct Answer: B
Rationale: The correct answer is B: Steroid hormones are secreted by the adrenal cortex. The adrenal cortex is responsible for producing steroid hormones such as cortisol, aldosterone, and sex hormones. This is supported by the understanding of endocrine gland functions. Choices A, C, and D are incorrect because steroid hormones do not require a second messenger, are not secreted by the posterior pituitary, and are not secreted by the pancreas. Understanding the specific glands and their hormone production is crucial in selecting the correct answer.
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When caring for a patient with primary hyperaldosteronism, the nurse would question a health care provider's prescription for which drug?
- A. Furosemide (Lasix)
- B. Spironolactone (Aldactone)
- C. Amiloride (Midamor)
- D. Aminoglutethimide (Cytadren)
Correct Answer: A
Rationale: Furosemide (Lasix) is a diuretic that can exacerbate hypokalemia, which is already a concern in primary hyperaldosteronism. Spironolactone, Amiloride, and Aminoglutethimide can be more appropriate for managing the condition.
Priority Decision: A patient with diabetes calls the clinic because she is experiencing nausea and flu-like symptoms. Which advice from the nurse will be the best for this patient?
- A. Administer the usual insulin dosage.
- B. Hold fluid intake until the nausea subsides.
- C. Come to the clinic immediately for evaluation and treatment.
- D. Monitor the blood glucose every 1 to 2 hours and call if it rises over 150 mg/dL (8.3 mmol/L).
Correct Answer: D
Rationale: Illness can cause blood glucose to rise, so the patient should monitor frequently and report if glucose levels exceed 150 mg/dL.
What significant side effect of terazosin should the doctor warn a 69-year-old male patient about?
- A. Bronchospasm
- B. Postural hypotension
- C. Heart failure
- D. Sedation
Correct Answer: B
Rationale: The correct answer is B: Postural hypotension. Terazosin is an alpha-1 blocker used to treat hypertension and BPH. Postural hypotension is a common side effect due to vasodilation, causing a sudden drop in blood pressure when changing positions. This side effect can lead to dizziness, fainting, and falls, especially in elderly patients. Bronchospasm (A) is not a common side effect of terazosin. Heart failure (C) is not a typical side effect and is unlikely with proper monitoring. Sedation (D) is not a significant side effect of terazosin.
Identify the hormone(s) produced by the hypothalamus.
- A. oxytocin
- B. antidiuretic hormone
- C. releasing and inhibiting hormones
- D. All of the above are all produced in the hypothalamus.
Correct Answer: D
Rationale: The correct answer is D because all the listed hormones are indeed produced by the hypothalamus. Oxytocin and antidiuretic hormone are directly synthesized in the hypothalamus and transported to the posterior pituitary for release. The hypothalamus also secretes releasing and inhibiting hormones that regulate the secretion of hormones from the anterior pituitary. Therefore, choices A, B, and C are incorrect on their own as they do not encompass all hormones produced by the hypothalamus.
Oxytocin ________.
- A. release is an example of a positive feedback control mechanism
- B. is an adenohypophyseal secretion
- C. exerts its most important effects during menstruation
- D. controls milk production
Correct Answer: A
Rationale: The correct answer is A because oxytocin release is an example of a positive feedback control mechanism. When oxytocin is released during childbirth, it stimulates contractions, which in turn lead to more oxytocin release, creating a positive feedback loop. This helps in the progression of labor.
Choice B is incorrect because oxytocin is a neurohypophyseal hormone, not an adenohypophyseal secretion. Choice C is incorrect as oxytocin's main effects are related to labor, delivery, and lactation, not menstruation. Choice D is incorrect because oxytocin primarily controls uterine contractions during labor and milk ejection during breastfeeding, not milk production itself.