Correct Answer: B

Rationale: The most important factor in preparing a toddler for additional surgery is their previous hospitalization experience. This familiarity with the hospital setting and procedures can help reduce anxiety and fear in the child. Choice A, meeting the child's wishes, may not always align with what is medically necessary or safe for the child. Choice C, preventing the child from staying with strangers, is important for general comfort but may not directly address the child's preparation for surgery. Choice D, ensuring ongoing parental affection, is crucial for emotional support but may not have the same impact as the child's previous hospitalization experience in preparing them for the surgery.

Correct Answer: A

Rationale: The correct answer is A: petechiae, infection, fatigue. In leukemia, bone marrow involvement leads to a decrease in normal blood cell production, resulting in petechiae (small red or purple spots on the skin), increased susceptibility to infections due to decreased white blood cells, and fatigue from anemia. Choices B, C, and D are incorrect because they do not directly relate to the typical signs and symptoms of leukemia with bone marrow involvement. Headache, papilledema, irritability, muscle wasting, weight loss, decreased intracranial pressure, psychosis, and confusion are not typically associated with leukemia and bone marrow involvement.

Correct Answer: D

Rationale: The correct answer is D: "These responses are replaced by voluntary activity at about five months of age." The grasp reflex and startle reflex (Moro reflex) are normal in newborns but typically disappear as the infant's nervous system matures and voluntary control develops. Choice A is incorrect because checking the responses before deciding a course of action does not address the developmental milestone related to the reflexes. Choice B is incorrect as it jumps to a conclusion of developmental delay without considering the normal developmental process. Choice C is incorrect as additional sensory stimulation is not necessary for the return of these reflexes, as they are expected to naturally diminish as part of normal development.

Correct Answer: C

Rationale: In a child with suspected Addison disease, the presence of hyperpigmentation (bronzing of the skin) and hypotension are key clinical findings. Hyperpigmentation is due to increased ACTH stimulation, resulting in melanocyte stimulation. Hypotension occurs due to decreased aldosterone production and subsequent sodium loss. Choices A, B, and D are incorrect. Arrested height and increased weight are not typical of Addison disease; thin, fragile skin and multiple bruises are more indicative of conditions like Cushing's syndrome; blurred vision and enuresis are not typically associated with Addison disease.

Correct Answer: C

Rationale: Asking about the gestational age is crucial in determining the stage of labor and assessing potential complications. This information helps in understanding the progress of labor and making appropriate decisions regarding the management of the delivery process. Choices A, B, and D are not as pertinent at this point in providing immediate care or assessing the situation compared to knowing the gestational age.