Correct Answer: C

Rationale: The correct principle to guide the nurse when teaching a discipline class for parents of pre-schoolers is that discipline is meant to teach and gradually shift control from parents to the child, promoting self-discipline. This approach focuses on educating children on appropriate behavior rather than solely relying on punishment. Choice A is incorrect because using the strictest punishment is not the most effective method for discipline. Choice B is incorrect because punishment can reinforce unwanted behavior if not used appropriately. Choice D is incorrect because discipline and punishment are not synonymous; discipline involves a broader aspect of teaching and guiding behavior.

Correct Answer: B

Rationale: The correct answer is B. Children with type 1 diabetes require insulin replacement because their pancreas produces little or no insulin. Oral hypoglycemics used in type 2 diabetes work by improving the effectiveness of insulin the body already makes, which is not sufficient in type 1 diabetes. Choice A is incorrect because the issue is not about the pancreas being adult or child-specific but rather the type of diabetes. Choice C is incorrect because it misstates the mechanism of action of the medications. Choice D is incorrect because it provides inaccurate information about the potential for the child's pancreas to produce insulin in the future, which is unlikely in type 1 diabetes.

Correct Answer: A

Rationale: When assessing a child with chronic renal failure, the nurse would expect to find uremic frost as a clinical manifestation. Uremic frost, a white powdery deposit of urea on the skin, occurs in severe cases of chronic renal failure due to the accumulation of urea and other waste products in the blood. Hypotension and massive hematuria are less common in chronic renal failure, while severe metabolic acidosis is typically mild to moderate and not a prominent clinical manifestation.

Correct Answer: D

Rationale: The correct answer is D, regression. Regression occurs when a child reverts to an earlier behavior, such as having accidents after being successfully toilet trained. This regression often happens due to stress or changes in routine. Choices A, B, and C are incorrect because positive reinforcement involves encouraging desired behavior, desensitization is a process of reducing sensitivity to a stimulus, and phobia is an intense fear or aversion to a specific object or situation, none of which directly apply to the described situation of the child having accidents after being toilet trained.

Correct Answer: C

Rationale: Siblings should be examined for VUR as it can run in families, and early detection can prevent complications. Limiting fluids is not advisable, and cranberry juice is not effective in preventing VUR. Surgery is usually not indicated for scarring reversal.