Correct Answer: A

Rationale: The patient's presentation of sudden-onset, painless vision loss in the right eye, along with a cherry-red spot at the macula and attenuated retinal vessels, is classic for central retinal artery occlusion (CRAO). In CRAO, there is a sudden blockage of the central retinal artery, leading to ischemia of the retina. The cherry-red spot represents the preserved choroid blood flow against the ischemic retina. The attenuated retinal vessels are a result of decreased blood flow in the retinal circulation. This condition is considered an ophthalmic emergency and requires immediate evaluation and management to prevent permanent vision loss.

Correct Answer: A

Rationale: The presentation described in the question is characteristic of tinea versicolor, a fungal skin infection caused by Malassezia furfur. The hypopigmented macules with fine scaling are often seen on the trunk and proximal extremities, particularly in areas that are more prone to sebum production. Patients with tinea versicolor may have a history of sun exposure and outdoor activities as the organism responsible for the infection thrives in warm, humid environments. Treatment typically involves the use of topical antifungal agents such as ketoconazole or selenium sulfide.

Correct Answer: A

Rationale: Nurse Adalynn explains to the mothers that early indication for hypovolemia caused by postpartum hemorrhage is an increasing pulse and decreasing blood pressure. Hypovolemia is a condition where there is a decreased volume of circulating blood in the body, often characterized by fluid loss such as through bleeding. As blood volume decreases, the heart rate increases in an attempt to maintain adequate perfusion to organs and tissues. This results in an elevated pulse rate. Additionally, as the blood volume decreases, the blood pressure may drop due to the reduced amount of blood being pumped around the body. Therefore, monitoring for an increasing pulse and decreasing blood pressure is crucial in detecting hypovolemia early, allowing for prompt intervention to prevent further complications.

Correct Answer: C

Rationale: Total Parenteral Nutrition (TPN) is a method of providing nutrition to patients who cannot or should not obtain their nutrition through regular oral intake. The primary goals of TPN include promoting weight gain, improving nutritional status, maintaining muscle mass, and establishing nitrogen balance. These goals are crucial to support the overall health and well-being of the patient receiving TPN. Enhancing the healing process is an important aspect of TPN as well, but it is not considered one of the primary goals as weight gain, nutritional status, muscle mass, and nitrogen balance are typically the immediate priorities when administering TPN.

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.