Correct Answer: C

Rationale: The correct answer is C: Numbness of the extremities. Numbness of the extremities is a common finding in patients with pernicious anemia, which is caused by cobalamin (vitamin B12) deficiency. This deficiency affects the peripheral nervous system, leading to neurological symptoms like numbness and tingling in the extremities. Choices A, B, and D are incorrect: Yellow-tinged sclerae is more indicative of jaundice or liver dysfunction, a shiny smooth tongue is seen in conditions like glossitis, and gum bleeding and tenderness are associated with periodontal disease or vitamin C deficiency, not pernicious anemia.

Correct Answer: B

Rationale: The patient's young age and the presence of a nontender lump in the axilla raise concerns for possible lymphoma, which requires prompt evaluation and treatment. This patient should be seen first to rule out any serious underlying condition. Choice A is less urgent as yellowish eyes in sickle cell anemia may be due to jaundice but not necessarily an acute issue. Choice C, a 50-year-old with chronic fatigue related to early-stage chronic lymphocytic leukemia, is a known condition that can be managed on a routine basis. Choice D, a 19-year-old with hemophilia wanting to self-administer factor VII replacement, is important but less urgent compared to the potential lymphoma presentation in choice B.

Correct Answer: D

Rationale: Before a liver and spleen scan, it is essential to assist the patient to a flat position. This position helps obtain clear images of the liver and spleen. Checking for iodine allergy (Choice A) is more relevant for procedures involving contrast dye, not a liver and spleen scan. Inserting a large-bore IV catheter (Choice B) may not be necessary for this specific procedure. Administering sedatives (Choice C) is not typically required for a liver and spleen scan, as the patient needs to remain still during the procedure.

Correct Answer: D

Rationale: A low white blood cell (WBC) count in an older patient is concerning as it indicates a potential compromise in the patient's immune function. White blood cells are crucial for fighting infections and a low count could lead to an increased risk of infections. Hematocrit, hemoglobin, and platelet count are important parameters to assess, but a low WBC count takes priority in this case due to its direct impact on immune health.

Correct Answer: B

Rationale: The correct answer is B because filgrastim (Neupogen) is a medication used to stimulate the production of neutrophils. Teaching the patient to self-administer these injections can help increase the neutrophil count and reduce the risk of infection. Option A is incorrect as hospital admission may not be necessary if the patient can manage the condition at home. Option C is not ideal as discontinuing chemotherapy can impact the leukemia treatment. Option D is unrelated to managing neutropenia in this scenario.