Nursing Elites

1. What type of dehydration occurs when the electrolyte deficit exceeds the water deficit?

• A. Isotonic dehydration
• B. Hypotonic dehydration
• C. Hypertonic dehydration
• D. Hyperosmotic dehydration

Correct answer: B

Rationale: Hypotonic dehydration occurs when the loss of electrolytes exceeds the loss of water, leading to a decrease in plasma osmolarity. This often occurs when sodium loss is greater than water loss, as in diarrhea or vomiting.

2. Melena, the passage of black, tarry stools, suggests bleeding from which source?

• A. The perianal or rectal area
• B. The upper gastrointestinal (GI) tract
• C. The lower GI tract
• D. Hemorrhoids or anal fissures

Correct answer: B

Rationale: Melena indicates bleeding from the upper GI tract. The black, tarry appearance of the stool results from the partial digestion of blood as it passes through the intestines, typically originating from sources like the stomach or duodenum. Lower GI bleeding usually presents as bright red blood in the stool, originating from sources like the colon or rectum. Choices A, C, and D are incorrect because melena specifically points to upper GI bleeding rather than issues in the perianal/rectal area, lower GI tract, or hemorrhoids/anal fissures.

3. What is the most consistent and commonly used indicator of pain in infants?

• A. Increased respirations
• B. Increased heart rate
• C. Thrashing of arms and legs
• D. Facial expression of discomfort

Correct answer: D

Rationale: Facial expression has consistently been validated as an indicator of pain in infants. Behavioral pain measures are most reliable for sharp procedural pain in infants. Increased heart rate and respirations are indicative of a generalized and complex response to stress, not specific for pain in infants. Thrashing of arms and legs is a reliable indicator in young children, not specifically in infants.

4. The nurse is teaching parents about diarrhea in young children. A parent asks the nurse what causes most cases of diarrhea in young children. How should the nurse respond?

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

Correct answer: A

Rationale: Rotavirus is the most common cause of diarrhea in young children, particularly those under the age of 2. Giardia, Shigella, and Salmonella can also cause diarrhea, but in the context of young children, Rotavirus is the primary pathogen responsible for diarrheal illnesses.

5. When a pre-school child says the sun shines to keep her warm, this is an example of:

• A. Animism
• B. Artificialism
• C. Egocentrism
• D. Centering

Correct answer: B

Rationale: The correct answer is B: Artificialism. Artificialism is the belief that natural phenomena are created by human beings for human purposes. In this scenario, the child attributes human-like intentions to the sun, assuming it shines specifically to keep her warm. Choice A, Animism, is the belief that natural objects and phenomena are alive and have feelings. Choice C, Egocentrism, refers to a child's difficulty in seeing things from another person's perspective. Choice D, Centering, involves focusing on only one aspect of a situation while ignoring other relevant aspects.

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