Correct Answer: C

Rationale: Irritability is a significant symptom of lead poisoning in toddlers and should be emphasized to parents. Lead poisoning can manifest with various symptoms, but irritability is particularly common in children exposed to lead. Abdominal pain (Choice A) is not a typical symptom of lead poisoning in toddlers. While constipation (Choice B) can occur, it is less specific and less common than irritability. Frequent urination (Choice D) is not a typical symptom associated with lead poisoning in toddlers and is less relevant for parents to recognize in this context.

Correct Answer: B

Rationale: The correct answer is B: Diphtheria, pertussis, tetanus, and polio. By 11 months of age, infants should have received doses of these vaccines as part of the immunization schedule. Choice A is incorrect because measles is usually given later in the schedule. Choice C is incorrect as rubella is usually given as part of the MMR vaccine, not individually, and tuberculosis is not routinely given as a vaccine in early infancy. Choice D is incorrect because mumps is not part of the recommended vaccines at 11 months of age.

Correct Answer: A

Rationale: The correct answer is to maintain a structured routine. Children with autism spectrum disorder benefit from a structured routine as it provides them with stability and predictability, which can help reduce anxiety and improve behavior management. Encouraging social interaction (Choice B) may not be suitable for all children with autism, as some may struggle with social skills. While positive reinforcement (Choice C) is a helpful strategy, maintaining a structured routine is more essential for overall management in children with autism spectrum disorder. Using a communication board (Choice D) may be beneficial for communication, but establishing a structured routine is a foundational strategy that should be prioritized in the discharge teaching for a child with autism spectrum disorder.

Correct Answer: B

Rationale: Monitoring the intravenous drop rate is crucial when administering IV fluids to ensure that the correct amount of fluids is delivered to the dehydrated infant. Choice A assumes the initial rate is correct without ongoing assessment. Choice C, while important, does not address the immediate need for monitoring the infusion rate. Choice D, maintaining the fluid at body temperature, is essential for comfort but is not as critical as ensuring the correct fluid delivery rate. By monitoring the intravenous drop rate, healthcare providers can adjust the flow as needed to prevent overhydration or underhydration, helping to manage the infant's fluid balance effectively.

Correct Answer: A

Rationale: The correct answer is Varicella (chickenpox), choice A. Varicella can lead to the complication of encephalitis, which is the inflammation of the brain. Scarlet fever (choice B) is caused by Group A Streptococcus bacteria and does not typically lead to encephalitis. Poliomyelitis (choice C) is a viral infection that affects the nervous system but does not directly cause encephalitis. Whooping cough (choice D), also known as pertussis, primarily affects the respiratory system and does not commonly result in encephalitis.