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 nurse is teaching the mother of a 9-month-old infant about administering liquid iron preparation. Which information should be included in the teaching?

• A. Adequate dosage will turn the stools a tarry, black color.
• B. Give Vitamin D to enhance absorption.
• C. Allow the liquid iron to mix with saliva before swallowing.
• D. Give the liquid iron with meals.

Correct answer: A

Rationale: The correct answer is A. Iron supplements can cause stools to turn black, which is a normal and harmless side effect. Iron is best absorbed on an empty stomach, although it can be given with food if gastrointestinal upset occurs. Vitamin C, not D, enhances iron absorption. Choice B is incorrect because Vitamin C enhances iron absorption, not Vitamin D. Choice C is incorrect as there is no need to mix liquid iron with saliva before swallowing. Choice D is incorrect because iron is best absorbed on an empty stomach.

3. An intravenous line is needed in a school-age child. What medication is an appropriate analgesic for use with this patient?

• A. TAC (tetracaine, epinephrine [Adrenalin], cocaine) 15 minutes before the procedure.
• B. A transdermal fentanyl (Duragesic) patch at the site of venipuncture.
• C. EMLA (eutectic mixture of local anesthetics) immediately before the procedure.
• D. LMX (4% liposomal lidocaine cream) 30 minutes before the procedure.

Correct answer: D

Rationale: LMX is an effective analgesic agent when applied to the skin 30 minutes before a procedure. It eliminates or reduces the pain from most procedures involving skin puncture. TAC provides skin anesthesia about 15 minutes after application to nonintact skin, making it more suitable for wound suturing. Transdermal fentanyl patches are designed for continuous pain control, not rapid pain control needed for a procedure like venipuncture. EMLA, for maximum effectiveness, must be applied approximately 60 minutes before the procedure, making it less suitable for immediate pain relief required for intravenous line placement.

4. The nurse on a pediatric unit is writing guidelines for age-specific preparation of children for procedures based on developmental characteristics. What guideline is accurate?

• A. Inform toddlers about an upcoming procedure 2 hours before the procedure is to be performed.
• B. Inform school-age children about an upcoming procedure immediately before the procedure is scheduled to occur.
• C. Discourage parent presence during procedures on infants and toddlers.
• D. Use simple diagrams of anatomy and physiology to explain a procedure to a school-age child.

Correct answer: D

Rationale: Using simple diagrams helps school-age children understand what to expect in a procedure, catering to their developmental level and reducing anxiety. Informing toddlers too early can increase anxiety, and parents' presence is generally comforting, not discouraging.

5. Which condition is characterized by a harsh, barking cough in children?

• A. Asthma
• B. Bronchiolitis
• C. Croup
• D. Pneumonia

Correct answer: C

Rationale: Croup is the correct answer. It is characterized by a harsh, barking cough due to inflammation of the upper airways, specifically the larynx and trachea. Asthma (Choice A) often presents with wheezing and shortness of breath, not a barking cough. Bronchiolitis (Choice B) typically causes wheezing and respiratory distress in infants. Pneumonia (Choice D) manifests with symptoms such as fever, productive cough, and chest pain, but not usually a barking cough.

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