Correct Answer: A

Rationale: The correct answer is A because the drug should be resumed when the WBC count falls to 5,000mm3 to ensure the client's safety and efficacy of treatment. This criterion indicates that the client's immune system has recovered sufficiently to tolerate the drug. Choices B, C, and D are incorrect because they do not directly correlate with the client's immune system recovery, which is crucial for drug tolerance. Choice B focuses on the rise in WBC count, not the fall to a specific level. Choice C is related to a cosmetic side effect, not clinical readiness. Choice D is unrelated to immune system recovery.

Correct Answer: C

Rationale: The correct initial action is to choose C: Ask the patient about the facial grimacing with movement. This is important as the patient's non-verbal cues (facial grimacing) contradict their verbal pain report. By directly addressing the discrepancy, the nurse can gather more accurate information about the patient's pain experience and potentially identify any underlying issues causing the discrepancy. Proceeding to the next patient's room (A) without addressing the discrepancy would neglect the patient's needs. Assuming the patient does not want pain medicine (B) based solely on the verbal report without further assessment is premature. Administering pain medication (D) without clarifying the situation may lead to inappropriate or ineffective treatment. Therefore, option C is the most appropriate initial action to ensure comprehensive and individualized patient care.

Correct Answer: B

Rationale: The correct answer is B: Fine needle aspiration. This is because fine needle aspiration involves extracting cells from the lump in the breast for examination under a microscope to determine if they are cancerous. This procedure provides a definitive diagnosis of breast cancer. Breast self-examination (A) is a screening tool for detecting lumps but does not confirm a diagnosis. Mammography (C) is used for screening and detecting abnormalities but requires further testing for confirmation. Chest x-ray (D) is not useful for diagnosing breast cancer.

Correct Answer: A

Rationale: The correct answer is A: Naturally acquired passive immunity. This type of immunity occurs when antibodies are passed from mother to baby through the placenta or breast milk, providing temporary protection. The baby does not produce its antibodies, hence it is passive. Choice B, naturally acquired active immunity, involves the body producing its antibodies after exposure to a pathogen. Choice C, artificially acquired passive immunity, involves receiving preformed antibodies from an external source. Choice D, artificially acquired active immunity, involves the body producing antibodies in response to vaccination.

Correct Answer: D

Rationale: The correct answer is D: absence seizures. Barbiturate anticonvulsants are not effective in treating absence seizures because they can worsen this type of seizure by suppressing brain activity. Barbiturates are typically used to treat tonic-clonic seizures and partial seizures, but not absence seizures. Febrile seizures are typically managed without barbiturate anticonvulsants. In summary, barbiturate anticonvulsants are effective in treating partial seizures and tonic-clonic seizures, but not absence seizures or febrile seizures due to their mechanisms of action and potential side effects.