Nursing Elites

1. What is the goal of pharmacologic therapy in the treatment of Parkinson�s disease?

• A. To increase the amount of acetylcholine at the pre-synaptic neurons
• B. To reduce the amount of dopamine available in the substantia nigra
• C. To balance cholinergic and dopaminergic activity in the brain
• D. To block dopamine receptors in pre-synaptic and post-synaptic neurons

Correct answer: C

Rationale: Parkinson�s disease results from a decrease in dopaminergic (inhibitory) activity, leaving an imbalance with too much cholinergic (excitatory) activity. With an increase in dopamine, the neurotransmitter activity becomes more balanced, and symptoms are controlled.

2. A child is being treated for dehydration with intravenous fluids. The child currently weighs 13 kg and is estimated to have lost 7% of his normal body weight. The nurse is double-checking the IV rate the healthcare provider prescribed. The formula the healthcare provider used was for maintenance fluids: 1000 mL for 10 kg of body weight plus 50 mL for every kilogram over 10 for 24 hours. Replacement fluid is the percentage of lost body weight � 10 per kg of body weight. According to the calculation for maintenance plus replacement fluid, which hourly IV rate will the nurse implement for 24 hours?

• A. 88 mL/hr
• B. 86 mL/hr
• C. 81 mL/hr
• D. 83 mL/hr

Correct answer: B

Rationale: For 13 kg, the maintenance fluid is 1150 mL (1000 mL for first 10 kg + 3*50 mL for the remaining 3 kg). Replacement fluid is 910 mL (0.07 * 13000 mL). Total fluid is 2060 mL, divided by 24 hours is 86 mL/hr.

3. A healthcare provider is planning care for a child with hyperkalemia. Which manifestation associated with the documented hyperkalemia requires immediate intervention by the healthcare provider?

• A. Hyperthermia
• B. Respiratory distress
• C. Seizures
• D. Cardiac arrhythmias

Correct answer: D

Rationale: In hyperkalemia, cardiac arrhythmias are the most critical and life-threatening manifestation that requires immediate intervention. Hyperkalemia can lead to dangerous heart rhythm disturbances, potentially resulting in cardiac arrest. Prompt treatment is essential to stabilize the heart rhythm and prevent life-threatening complications. Hyperthermia, respiratory distress, and seizures are not typically associated with hyperkalemia and should be addressed, but cardiac arrhythmias pose the most urgent risk to the patient's life.

4. A healthcare professional is preparing to administer a measles, mumps, and rubella (MMR) vaccine to a 15-month-old child. Which of the following findings is a contraindication to the administration of this vaccine?

• A. Family history of egg allergy
• B. Currently taking antibiotics
• C. History of asthma
• D. Presence of rhinorrhea

Correct answer: B

Rationale: Taking antibiotics is a contraindication to receiving the MMR vaccine because antibiotics can potentially interfere with the effectiveness of the vaccine. It is essential to avoid administering the MMR vaccine while the child is on antibiotics to ensure the vaccine provides the intended protection.

5. Why is the specific gravity for infants lower than for older children?

• A. Infants have a greater body surface area.
• B. Infants have a higher basal metabolic rate.
• C. Infants have a greater percentage of body weight that is water.
• D. Infants' kidneys are less able to concentrate urine.

Correct answer: D

Rationale: The correct answer is D because infants' kidneys are less developed compared to older children, making them less efficient at concentrating urine. This results in a lower specific gravity in infants. The other choices do not directly explain why the specific gravity is lower in infants.

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