Correct Answer: D

Rationale: High fever, especially in very young infants, or the presence of a stiff neck can indicate a serious infection requiring immediate attention. A fever lasting more than 3 days also warrants medical evaluation.

Correct Answer: B

Rationale: Hypovolemic shock in children is most frequently caused by blood loss, which can result from trauma, surgery, or gastrointestinal bleeding. Sepsis and anaphylaxis can lead to different types of shock (septic and anaphylactic), and heart failure is related to cardiogenic shock.

Correct Answer: A

Rationale: Human milk is preferred, even for preterm infants, because it contains essential nutrients and antibodies that are particularly beneficial for their growth and development. Choice B is incorrect because human milk is rich in essential nutrients necessary for preterm infants. Choice C is incorrect as commercial infant formulas do not provide the same benefits as human milk. Choice D is incorrect as specialized formulas are available to meet the unique nutritional needs of preterm infants, but human milk remains the optimal choice.

Correct Answer: B

Rationale: Protecting the skin around the colostomy is crucial to prevent irritation and infection, which are common complications in infants with colostomies. Teaching and discussing long-term implications are important but secondary to immediate skin care needs.

Correct Answer: D

Rationale: N-acetylcysteine is the specific antidote for acetaminophen poisoning, working by replenishing glutathione and preventing liver damage. The other options are antidotes for different types of poisoning (e.g., Fomepizole for methanol or ethylene glycol poisoning).