Nursing Elites

1. What term describes the invagination of one segment of bowel within another?

• A. Atresia
• B. Stenosis
• C. Herniation
• D. Intussusception

Correct answer: D

Rationale: Intussusception is the correct answer. It refers to the condition where one segment of the bowel folds into another, leading to an obstruction. Atresia (Choice A) is the absence or abnormal closure of a normal opening or tubular structure. Stenosis (Choice B) is the narrowing of a passage in the body. Herniation (Choice C) is the abnormal protrusion of an organ or tissue through a defect in its surrounding walls. Intussusception is a medical emergency commonly observed in infants and young children and necessitates prompt intervention to prevent severe complications.

2. What is the most common cause of acute gastroenteritis in children under 5 years?

• A. Salmonella
• B. Rotavirus
• C. Norovirus
• D. Shigella

Correct answer: B

Rationale: Rotavirus is the leading cause of acute gastroenteritis in children under 5 years. It leads to severe diarrhea and dehydration. Vaccination against rotavirus has significantly reduced the incidence of this disease, but it remains a major cause of morbidity in young children globally. Salmonella and Shigella can cause gastroenteritis, but they are less common in children under 5 years. Norovirus is also a common cause of gastroenteritis, but Rotavirus is the most prevalent in this age group.

3. What is the best age to introduce solid food into an infant’s diet?

• A. 2 to 3 months
• B. 4 to 6 months
• C. When birth weight has tripled
• D. When tooth eruption has started

Correct answer: B

Rationale: The introduction of solid foods is recommended at 4 to 6 months when the infant's digestive system is more developed and ready for solids.

4. The clinic nurse is reviewing statistics on infant mortality for the United States versus other countries. Compared with other countries that have a population of at least 25 million, the nurse makes which determination?

• A. The United States is ranked last among 27 countries
• B. The United States is ranked similar to 20 other developed countries
• C. The United States is ranked in the middle of 20 other developed countries
• D. The United States is ranked highest among 27 other industrialized countries

Correct answer: A

Rationale: The United States is ranked last among developed countries with similar populations in terms of infant mortality rates, highlighting a significant public health concern.

5. A 10-month-old infant is diagnosed with gastroesophageal reflux. An esophageal (pH) probe monitor is ordered. What explanation for the purpose of the esophageal probe should the nurse provide to the parents?

• A. Assist in the passage of formula through the esophagus
• B. Identify the number of reflux episodes that are occurring
• C. Determine the time it takes for the stomach to empty its contents
• D. Monitor the pH within the stomach

Correct answer: B

Rationale: The correct answer is B. The esophageal pH probe is used to identify the frequency and severity of reflux episodes by measuring the pH in the esophagus. Choice A is incorrect because the probe does not assist in the passage of formula through the esophagus. Choice C is incorrect as determining the time it takes for the stomach to empty its contents would require a different procedure. Choice D is incorrect as the esophageal pH probe monitors the pH in the esophagus, not the stomach.

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