what type of dehydration occurs when the electrolyte deficit exceeds the water deficit
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ATI RN

RN Nursing Care of Children Online Practice 2019 A

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

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. Which parameter correlates best with measurements of total muscle mass?

Correct answer: D

Rationale: Upper arm circumference correlates best with total muscle mass because it includes both muscle and fat components, making it a reliable indicator of muscle mass.

3. Which nonpharmacologic intervention appears to be effective in decreasing neonatal procedural pain?

Correct answer: D

Rationale: Oral sucrose and nonnutritive sucking are effective nonpharmacologic interventions for reducing procedural pain in neonates.

4. What urine test result is considered abnormal?

Correct answer: A

Rationale: A urine pH of 4.0 is abnormally low, indicating possible acidosis or other metabolic conditions. WBC count of 1-2 cells/ml, absence of protein, and a specific gravity of 1.020 are within normal limits.

5. Which pediatric condition is characterized by a "string sign" on an upper GI series?

Correct answer: B

Rationale: The correct answer is B: Hypertrophic pyloric stenosis. The "string sign" is associated with hypertrophic pyloric stenosis, a condition where the pyloric canal is narrowed, leading to gastric outlet obstruction. Intussusception (choice A) typically presents with colicky abdominal pain and currant jelly stools. Hirschsprung disease (choice C) is characterized by the absence of ganglion cells in the distal colon. Meckel diverticulum (choice D) is a congenital outpouching of the small intestine that can present with painless rectal bleeding.

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