Correct Answer: A

Rationale: The correct answer is A because continuous venovenous hemofiltration (CVVH) primarily removes fluids and solutes through the process of convection. In CVVH, blood flows through a filter where hydrostatic pressure drives plasma water and solutes across a semipermeable membrane. This process mimics the natural filtration that occurs in the kidneys. Choice B is incorrect because CVVH does not specifically target plasma water only but also removes solutes. Choice C is incorrect because CVVH does not involve adding dialysate to remove plasma water and solutes. Choice D is incorrect because while CVVH may involve ultrafiltration and convection, it does not typically include dialysis as a primary mechanism for solute removal.

Correct Answer: D

Rationale: The correct answer is D: Titrate to a predefined endpoint using a standard sedation scale. This approach ensures individualized dosing based on the patient's response, minimizing the risk of over-sedation or under-treatment. It allows for careful monitoring and adjustment of dosage to achieve the desired level of sedation while avoiding adverse effects. A: Administering medication around the clock may lead to unnecessary sedation and increased risk of side effects. B: Administering medications through a feeding tube is not recommended for benzodiazepines as it may affect absorption and increase the risk of complications. C: Giving the highest allowable dose without considering individual response can result in excessive sedation and adverse effects.

Correct Answer: C

Rationale: The correct answer is C: Anxiety about unfinished business. The patient's desire to settle issues with their siblings before death indicates a concern about unresolved matters. This response aligns with the concept of psychosocial responses to death, specifically the need for closure and resolution. Restlessness (choice A) may not necessarily indicate a specific focus on unfinished business. Yearning and protest (choice B) typically refer to the initial stages of grief, not specifically related to settling unresolved issues. Fear of the meaninglessness of one's life (choice D) is more existential and philosophical, whereas the patient's focus here is on addressing specific issues with their siblings.

Correct Answer: C

Rationale: The correct answer is C: Provide rest periods to reduce fatigue. Prioritizing rest periods can help alleviate fatigue, a common symptom in patients with advanced cancer. Encouraging small, frequent meals (choice A) may not be effective if the patient has no appetite. Administering appetite stimulants (choice B) may not address the root cause of fatigue. Discussing parenteral nutrition (choice D) is not the priority as it does not directly address the fatigue and loss of appetite reported by the patient. Rest is essential for symptom management and overall well-being in palliative care.

Correct Answer: B

Rationale: The correct answer is B: Because the patient is unconscious, complete care as quickly and quietly as possible. This is the most appropriate intervention as it prioritizes the patient's comfort and minimizes unnecessary stimulation. Performing care quickly reduces the time the patient is exposed to potentially uncomfortable procedures. Being quiet also helps create a calming environment for the patient, which is important for someone who is unresponsive. Explanation for other choices: A: Asking a family member to help and discussing family structure is not appropriate as it can be intrusive and may not be relevant or beneficial to the patient's care. C: Informing the patient of the day and time is unnecessary as the patient is unresponsive. Providing care is more crucial than updating the patient. D: Turning on the television is inappropriate as it introduces unnecessary noise and distraction, which can be overwhelming for an unresponsive patient.