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. 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. The school nurse is evaluating the number of school-age children classified as obese. The nurse recognizes that the percentile of body mass index that classifies a child as obese is greater than which?

• A. 50th percentile
• B. 75th percentile
• C. 80th percentile
• D. 95th percentile

Correct answer: D

Rationale: A child with a BMI greater than the 95th percentile is classified as obese, according to standard growth charts used in pediatric practice.

4. The nurse is preparing to care for a newborn with an omphalocele. The nurse should understand that care of the infant should include what intervention?

• A. Initiating breast or bottle-feedings to stabilize the blood glucose level
• B. Maintaining pain management with an intravenous opioid
• C. Covering the intact bowel with a nonadherent dressing to prevent injury
• D. Performing immediate surgery

Correct answer: C

Rationale: The priority intervention for an infant with an omphalocele is to cover the intact bowel with a nonadherent dressing to protect the exposed organs and prevent infection. This intervention is crucial to prevent injury and maintain the infant's safety. Initiating feedings or maintaining pain management are not the immediate priorities in the care of an infant with an omphalocele. Performing immediate surgery may be required in the future, but initially, covering the bowel is the first critical step in management.

5. When transitioning from intravenous to oral morphine, what would the nurse anticipate regarding the oral dose in comparison to the intravenous dose to achieve equianalgesia?

• A. Same as the intravenous dose
• B. Greater than the intravenous dose
• C. One half of the intravenous dose
• D. One fourth of the intravenous dose

Correct answer: B

Rationale: When switching from intravenous to oral morphine, a higher oral dose is required to achieve equianalgesia due to significant metabolism from the first-pass effect. Choosing the same oral dose as the intravenous dose would provide less pain relief. Opting for a dose greater than the intravenous dose is necessary to achieve the same analgesic effect. Therefore, options A, C, and D are incorrect.

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