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 newborn's parents are being taught about ways to prevent sudden infant death syndrome (SIDS). Which of the following instructions should be included?

• A. Place the infant in a prone position to sleep.
• B. Allow the infant to sleep on a large pillow.
• C. Use a soft mattress in the infant's crib.
• D. Give the infant a pacifier at bedtime.

Correct answer: D

Rationale: The correct instruction to prevent SIDS is to give the infant a pacifier at bedtime. The use of a pacifier while the infant is sleeping is associated with a decreased risk of SIDS. Placing the infant on their back to sleep is recommended to prevent SIDS, not in a prone position (Choice A). Allowing the infant to sleep on a large pillow (Choice B) is dangerous and increases the risk of SIDS. Using a soft mattress in the infant's crib (Choice C) is also a risk factor for SIDS, so it should be avoided. Additionally, soft bedding or pillows should be avoided to reduce the risk of SIDS.

3. When preparing to insert an intravenous catheter for a 7-year-old child, which of the following actions should a healthcare professional take?

• A. Apply an anesthetic cream to the insertion site 1 hr before the procedure.
• B. Use a 16-gauge needle for the insertion.
• C. Insert the catheter into a vein of the child's dominant hand.
• D. Choose a site over the child's metacarpal veins.

Correct answer: A

Rationale: Applying an anesthetic cream to the insertion site 1 hr before the procedure is crucial when inserting an intravenous catheter in a child to minimize pain and discomfort during the procedure. This practice is especially important in pediatric patients to ensure a more comfortable experience and improve cooperation during the insertion process. Choice B is incorrect as a 16-gauge needle is too large for a child, and a smaller gauge needle is typically used. Choice C is incorrect as the catheter should be inserted into a suitable vein, not specifically the dominant hand vein. Choice D is incorrect as metacarpal veins are usually avoided due to their small size and the potential for complications.

4. The renin-angiotensin-aldosterone system plays an important role in maintaining blood pressure. Which compound in this system is most powerful at raising blood pressure?

• A. Angiotensin I
• B. Angiotensin II
• C. Angiotensin III
• D. Renin

Correct answer: B

Rationale: Angiotensin II is the most potent compound in the renin-angiotensin-aldosterone system for raising blood pressure. It acts as a powerful vasoconstrictor, leading to increased systemic vascular resistance. Angiotensin II is formed from angiotensin I through the action of the angiotensin-converting enzyme. While renin initiates the cascade by converting angiotensinogen to angiotensin I, it is angiotensin II that exerts the strongest pressor effect.

5. A healthcare professional is planning care for an infant who has a colostomy. Which of the following actions should the healthcare professional take?

• A. Change the ostomy pouch every day.
• B. Use baby wipes to clean the stoma.
• C. Avoid using soap to clean the stoma.
• D. Apply barrier ointment to the skin around the stoma.

Correct answer: D

Rationale: When caring for an infant with a colostomy, it is essential to apply barrier ointment to the skin around the stoma. This helps in preventing skin breakdown and irritation caused by exposure to stool or urine. Changing the ostomy pouch as needed, using appropriate cleaning supplies such as warm water and mild soap (avoiding harsh chemicals like alcohol), and ensuring gentle cleaning of the stoma with a soft cloth or gauze are also important steps in colostomy care. Using baby wipes may not be recommended as they can contain chemicals that may irritate the sensitive skin around the stoma.

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