Correct Answer: C

Rationale: The correct answer is C: 'Brachytherapy is an internal radiation therapy.' Brachytherapy involves the placement of radioactive sources inside or next to the area requiring treatment. This differs from teletherapy, which is external radiation therapy. Choice A is incorrect as pregnant individuals should avoid exposure to radiation. Choice B is incorrect because teletherapy does not make the patient radioactive; the radiation source is external. Choice D is incorrect as feces is not a significant source of radiation during teletherapy.

Correct Answer: D

Rationale: In cases where a patient does not respond appreciably to therapy, it is crucial to identify and respect the patient's choices regarding treatment, including preferences for end-of-life care. Option A is incorrect because it focuses on spiritual support rather than the patient's care preferences. Option B is incorrect as it assumes non-adherence to treatment without evidence. Option C is incorrect as it suggests an alternative treatment approach without considering the patient's wishes for end-of-life care.

Correct Answer: A

Rationale: The correct answer is A: 'The patient faces a significant risk of malignancy.' Indolent neoplasms are characterized by their slow growth and relatively low malignancy potential; however, they do have the capability to progress to malignancy over time. Choices B, C, and D are incorrect because they make assumptions about specific types of leukemia and hemophilia, which are not necessarily related to the presence of an indolent neoplasm.

Correct Answer: A

Rationale: The correct answer is A: Vital signs. Monitoring vital signs is crucial during the infusion of monoclonal antibody therapy as there is a risk of infusion reactions such as fevers, chills, hypotension, and tachycardia. Assessing vital signs allows for early detection of any adverse reactions, enabling prompt intervention. Skin reactions (choice B), respiratory status (choice C), and renal function (choice D) are important assessments in general patient care but are not the priority during the infusion of monoclonal antibody therapy.

Correct Answer: D

Rationale: The correct answer is D: Avoiding tight and restrictive clothing on the legs. Patients with polycythemia vera are at risk of deep vein thrombosis (DVT), so it is essential to avoid tight and restrictive clothing that can impede circulation. Choices A, B, and C are incorrect because avoiding natural sources of vitamin K, altitudes of 1500 feet, and performing active range of motion exercises are not directly related to preventing complications of polycythemia vera.