Correct Answer: C

Rationale: A pituitary adenoma is a type of benign tumor that arises from the pituitary gland, which is located at the base of the brain. When a pituitary adenoma grows large enough, it can compress surrounding structures, including the optic chiasm – the point at which the optic nerves cross over in the brain. Compression of the optic chiasm can lead to symptoms such as vision problems (e.g., visual disturbances), headaches, and nausea/vomiting, which are consistent with the presentation described in the question. Meningiomas, glioblastoma multiforme, and medulloblastomas are less likely to compress the optic chiasm and present with different characteristic symptoms based on their locations and growth patterns.

Correct Answer: D

Rationale: Addison's disease is a rare endocrine disorder characterized by adrenal insufficiency, leading to a deficiency in cortisol and aldosterone production. The symptoms of Addison's disease include fatigue, weakness, hyperpigmentation of the skin (due to elevated levels of ACTH stimulating melanocytes), and salt craving (due to aldosterone deficiency). Low serum sodium levels and elevated serum potassium levels are also common laboratory findings in Addison's disease, as aldosterone plays a key role in maintaining electrolyte balance. Patients with Addison's disease are at risk of developing an adrenal crisis, which can be life-threatening if not promptly recognized and treated with glucocorticoid and mineralocorticoid replacement therapy.

Correct Answer: D

Rationale: Advocacy is the ethical principle that the nurse is responsible for providing all patients with caring attention and information, despite the reaction of the patient. Advocacy involves supporting and speaking up for the patient's best interests, ensuring they receive the care and information they need to make informed decisions about their health and well-being. Providing caring attention and information is essential in advocating for the patient's autonomy and well-being, even if the patient may not initially appreciate or react positively to these efforts.

Correct Answer: B

Rationale: When a woman in active labor is receiving intravenous oxytocin for labor augmentation, it is essential to increase the oxytocin infusion rate gradually to prevent oxytocin-induced uterine hyperstimulation. Uterine hyperstimulation can lead to complications such as fetal distress, uterine rupture, and postpartum hemorrhage. By increasing the oxytocin infusion rate gradually, the uterus has more time to adapt to the medication and reduces the risk of hyperstimulation. It is crucial for the healthcare provider to carefully monitor the woman's response to oxytocin and adjust the infusion rate as needed to ensure safe and effective labor augmentation. Monitoring for signs of uterine hyperstimulation, such as persistent contractions close together or excessive uterine activity, is crucial in preventing complications and ensuring the well-being of both the mother and baby.

Correct Answer: C

Rationale: A pituitary adenoma is a type of benign tumor that arises from the pituitary gland, which is located at the base of the brain. When a pituitary adenoma grows large enough, it can compress surrounding structures, including the optic chiasm – the point at which the optic nerves cross over in the brain. Compression of the optic chiasm can lead to symptoms such as vision problems (e.g., visual disturbances), headaches, and nausea/vomiting, which are consistent with the presentation described in the question. Meningiomas, glioblastoma multiforme, and medulloblastomas are less likely to compress the optic chiasm and present with different characteristic symptoms based on their locations and growth patterns.