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. What amount of fluid loss occurs with moderate dehydration?

• A. <50 ml/kg
• B. 50 to 90 ml/kg
• C. <5% total body weight
• D. >15% total body weight

Correct answer: B

Rationale: Moderate dehydration is typically defined as a loss of 50 to 90 mL/kg of body weight. This amount reflects significant fluid loss that requires medical attention but is not yet severe.

3. The LPN is assessing for fontanels on the head of a 6-month-old. Which fontanel is expected to still be present?

• A. Posterior
• B. Anterior
• C. Sphenoid
• D. Lambdoid

Correct answer: B

Rationale: The correct answer is B: Anterior. The anterior fontanel usually remains open until about 12-18 months of age, while the posterior fontanel closes by 2-3 months. Choices A, C, and D are incorrect as the posterior fontanel closes by 2-3 months of age, and the sphenoid and lambdoid fontanels are not typically assessed in routine infant head examinations.

4. A four-year-old child has a history of repeated otitis media despite antibiotic treatment. Which treatment measure should the nurse discuss with the parents?

• A. Antibiotic treatment
• B. Adenoidectomy
• C. The insertion of tympanostomy (pressure equalizing) tubes
• D. Tonsillectomy

Correct answer: C

Rationale: The correct answer is C: The insertion of tympanostomy (pressure equalizing) tubes. This treatment measure is appropriate for a child with recurrent otitis media as it helps drain fluid from the middle ear and prevent further infections. Adenoidectomy (choice B) involves the removal of the adenoids, which may not directly address the ear infections. Antibiotic treatment (choice A) has already been ineffective in this case, so alternative measures are necessary. Tonsillectomy (choice D) is not typically indicated for otitis media unless there are specific reasons such as enlarged tonsils contributing to the condition.

5. A child has a nasogastric (NG) tube after surgery for Hirschsprung disease. What is the purpose of the NG tube?

• A. Prevent the spread of infection.
• B. Monitor electrolyte balance.
• C. Prevent abdominal distention.
• D. Maintain accurate records of output.

Correct answer: C

Rationale: The primary purpose of an NG tube post-surgery for Hirschsprung disease is to prevent abdominal distention by decompressing the stomach and intestines. This helps prevent complications and promotes healing.

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