Nursing Elites

1. Physiologically, the child compensates for fluid volume losses by which mechanism?

• A. Inhibition of aldosterone secretion
• B. Hemoconcentration to reduce cardiac workload
• C. Fluid shift from interstitial space to intravascular space
• D. Vasodilation of peripheral arterioles to increase perfusion

Correct answer: C

Rationale: In response to dehydration, the body compensates by shifting fluids from the interstitial spaces to the intravascular space to maintain blood pressure and perfusion to vital organs. Hemoconcentration and vasoconstriction are other compensatory mechanisms but are less immediate.

2. The charge nurse in the pediatric unit is teaching nursing students about pyloric stenosis. A student asks what causes pyloric stenosis. How should the nurse respond?

• A. One portion of the intestines invaginates or telescopes into another
• B. Hypertrophy of the circular pylorus muscle
• C. Relaxed cardiac sphincter
• D. Absent ganglion cells in the colon

Correct answer: B

Rationale: Pyloric stenosis is caused by the hypertrophy (thickening) of the circular muscle of the pylorus, leading to obstruction. Choice A is incorrect as it describes intussusception, not pyloric stenosis. Choice C is incorrect as a relaxed cardiac sphincter is related to gastroesophageal reflux. Choice D is incorrect as it describes Hirschsprung's disease, not pyloric stenosis.

3. Which statement regarding bottle mouth caries requires further teaching?

• A. Caries can be decreased by putting an infant to bed with a bottle of milk or sweetened juice
• B. Eliminating the bedtime bottle or substituting water is recommended
• C. Sugar pools within the oral cavity cause severe decay
• D. It is often seen in children between 18 months and 3 years

Correct answer: A

Rationale: The correct answer is A. Putting an infant to bed with a bottle of milk or sweetened juice increases the risk of bottle mouth caries rather than decreasing it. This statement requires further teaching as it provides incorrect information. Choice B is correct as eliminating the bedtime bottle or substituting water is recommended to prevent bottle mouth caries. Choice C is also correct as sugar pooling within the oral cavity can indeed cause severe decay. Choice D is correct as bottle mouth caries is often observed in children between 18 months and 3 years.

4. The nurse is performing an otoscopic examination on a child. Which are normal findings the nurse should expect? (Select all that apply.)

• A. All below
• B. A well-defined light reflex
• C. A small, round, concave spot near the center of the drum
• D. The tympanic membrane is a nontransparent grayish color

Correct answer: A

Rationale: A well-defined light reflex, a small concave spot, and a grayish, nontransparent tympanic membrane are normal findings during an otoscopic examination in a child.

5. What is the most appropriate action for a child with epistaxis?

• A. Have the child lie flat
• B. Pinch the nose and lean forward
• C. Apply a warm compress to the nose
• D. Encourage deep breathing

Correct answer: B

Rationale: The most appropriate action for a child with epistaxis is to pinch the nose and lean forward. This technique helps stop the bleeding and prevent aspiration of blood. By applying pressure to the bleeding vessels and allowing the blood to drain out of the nostrils instead of being swallowed, the risk of nausea and airway obstruction is reduced. Having the child lie flat (Choice A) may lead to blood flowing down the throat, causing potential choking. Applying a warm compress (Choice C) is not typically recommended for epistaxis as cold compresses are more effective. Encouraging deep breathing (Choice D) is not directly related to managing epistaxis.

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