A patient presents with sudden-onset severe headache, vomiting, and altered mental status. Imaging reveals a noncontrast-enhancing hemorrhagic lesion within the subarachnoid space. Which of the following neurological conditions is most likely responsible for these symptoms?

Correct Answer: D

Rationale: The correct answer is D: Subarachnoid hemorrhage. This condition presents with sudden-onset severe headache, vomiting, and altered mental status due to bleeding in the subarachnoid space. This type of hemorrhage is typically noncontrast-enhancing on imaging. A: Ischemic stroke does not typically present with sudden-onset severe headache and vomiting. B: Subdural hematoma usually presents with a slower onset of symptoms and often develops after head trauma. C: Intracerebral hemorrhage presents with focal neurological deficits rather than altered mental status and vomiting. In summary, based on the sudden onset of symptoms, imaging findings, and clinical presentation, subarachnoid hemorrhage is the most likely diagnosis in this case.

Correct Answer: A

Rationale: The correct answer is A: Bleeding. Chemotherapy can lead to low platelet counts (thrombocytopenia), increasing the risk of bleeding. The priority goal of the nurse is to prevent bleeding by taking precautions such as avoiding invasive procedures, using soft toothbrushes, and monitoring for signs of bleeding. Infection (B) is important but not the priority as bleeding can be life-threatening. Hypotension (C) is not directly related to thrombocytopenia. Diarrhea (D) is a potential side effect of chemotherapy but is not the priority when considering thrombocytopenia.

Correct Answer: D

Rationale: The correct answer is D because an ethical dilemma arises when there is a conflict between two or more ethical principles, leading to a difficult decision-making situation for Nurse Mauve. This involves weighing the benefits and consequences of each ethical principle to determine the best course of action. Choice A is incorrect as time pressure does not define an ethical dilemma. Choice B is incorrect because ethical dilemmas involve conflicting choices, not unclear ones. Choice C is incorrect as the conflict in an ethical dilemma is not necessarily with a superior but can be internal or with other stakeholders.

Correct Answer: D

Rationale: The correct answer is D because informed consent should be obtained from both the participants and their parents to ensure full understanding and agreement from all parties involved. This is crucial when working with minors to protect their rights and ensure ethical standards are met. Choice A is incorrect as it excludes parental consent, which is necessary for minors. Choice B is also incorrect as it neglects the participants' direct involvement in consenting to participate. Choice C is incorrect because it only includes available relatives, which may not be legally authorized to provide consent on behalf of the participants.

Correct Answer: C

Rationale: The correct answer is C: Acquired von Willebrand syndrome. This condition is characterized by a defect in von Willebrand factor function, leading to prolonged bleeding time and mucocutaneous bleeding. Normal platelet count rules out Glanzmann thrombasthenia and Bernard-Soulier syndrome which are platelet disorders. Normal PT and aPTT rule out Hemophilia A, a coagulation factor deficiency. Acquired von Willebrand syndrome is the most likely cause based on the clinical presentation and laboratory findings.