Correct Answer: B

Rationale: Antifungal agents are the appropriate treatment for candidal diaper rash as it is a fungal infection. Corticosteroids, antibiotics, and retinoids are not indicated for this condition. Corticosteroids may worsen fungal infections, antibiotics are used for bacterial infections, and retinoids are typically used for acne and skin conditions unrelated to candidal diaper rash.

Correct Answer: D

Rationale: While catheterization can be uncomfortable, it does not typically result in long-term psychological harm, and obtaining a sterile specimen is important for accurate diagnosis.

Correct Answer: C

Rationale: Gavage feedings are necessary for infants with congenital heart defects to conserve the infant's energy by eliminating the need for sucking. This is important because sucking requires energy expenditure, which can be taxing for infants with cardiac defects. Choice A is incorrect as gavage feedings do not primarily limit the chance of vomiting. Choice B is incorrect because the speed of feeding administration is not the primary reason for using gavage feedings in this case. Choice D is incorrect as the regulation of the quantity of nutritional liquid is not the main purpose of gavage feedings in infants with congenital heart defects.

Correct Answer: B

Rationale: The correct answer is B: 'Avoid gluten.' Celiac disease is a condition in which the immune system reacts to gluten, a protein found in wheat, barley, and rye. Avoiding gluten is essential in managing celiac disease as it helps prevent damage to the small intestine and alleviate symptoms. Choices A, C, and D are incorrect because dairy products, high-fat foods, and foods high in sugar do not directly relate to the management of celiac disease. It is crucial to focus on eliminating gluten-containing foods to effectively control the condition.

Correct Answer: C

Rationale: When palpating the abdomen of an infant with hypertrophic pyloric stenosis (HPS), the nurse would expect to feel an olive-sized mass in the right upper quadrant. This finding is characteristic of HPS due to the hypertrophied pylorus muscle. Choices A, B, and D are incorrect. A distended colon is not typically associated with HPS. Marked tenderness around the umbilicus is not a specific finding of HPS. Rhythmic peristaltic waves in the lower abdomen are not expected in HPS, as the condition primarily affects the pylorus region of the stomach.