Nursing Elites

1. 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.

2. A patient taking isotretinoin (Accutane) for acne vulgaris. Which statement indicates that the patient teaching has been effective?

• A. I should use a reliable form of birth control.
• B. I will stop taking the drug if my skin is dry.
• C. It is important to increase intake of vitamin A.
• D. I do not need to use sunblock while taking Accutane.

Correct answer: A

Rationale: The correct answer is A. Isotretinoin is highly teratogenic, which means it can cause birth defects. Therefore, it is crucial for patients, especially females of childbearing potential, to use effective forms of birth control to prevent pregnancy while taking this medication. This is a key component of patient teaching to ensure the safe use of isotretinoin. Choice B is incorrect because discontinuing isotretinoin abruptly can lead to a flare-up of acne. Choice C is incorrect because increasing vitamin A intake can be harmful due to the risk of hypervitaminosis A. Choice D is incorrect because isotretinoin makes the skin more sensitive to sunlight, so sunblock is essential to prevent sunburn and skin damage.

3. What type of characteristic is described in this scenario?

• A. Mode Change
• B. Social
• C. Enduring
• D. Situational

Correct answer: D

Rationale: The scenario describes a temporary change in Ava's emotional state due to a specific event - the fight with her friend. This aligns with the definition of a situational characteristic, which is influenced by specific circumstances or events. Ava's sadness and tearfulness in this situation are not reflective of a permanent trait but rather a response to a particular situation. Choices A, B, and C are incorrect. 'Mode Change' does not accurately describe the situation; 'Social' is too broad and does not specifically address Ava's emotional state change; 'Enduring' implies a long-lasting trait, which is not the case in this scenario.

4. A nurse is planning care for a school-age child who has thrombocytopenia. Which of the following interventions should the nurse include in the plan?

• A. Administer aspirin as needed for fever.
• B. Avoid venipunctures whenever possible.
• C. Encourage the child to participate in contact sports.
• D. Administer ibuprofen for pain.

Correct answer: B

Rationale: The correct answer is B: 'Avoid venipunctures whenever possible.' Thrombocytopenia is a condition characterized by a low platelet count, which can lead to an increased risk of bleeding. Venipunctures can cause bleeding in these patients; therefore, they should be avoided whenever possible. Choice A is incorrect because aspirin should be avoided in patients with thrombocytopenia as it can further increase the risk of bleeding due to its antiplatelet effects. Choice C is incorrect because participating in contact sports can also increase the risk of injury and bleeding in a child with thrombocytopenia. Choice D is incorrect as ibuprofen, like aspirin, can also increase the risk of bleeding and should be avoided in these patients.

5. A patient develops hypotension, laryngeal edema, and bronchospasm after eating peanuts. Which medication should the nurse prepare to administer?

• A. Promethazine
• B. Epinephrine
• C. Diphenhydramine
• D. Hydroxyzine

Correct answer: B

Rationale: The patient is exhibiting symptoms of anaphylaxis triggered by a peanut allergy, a severe and potentially life-threatening allergic reaction. The appropriate medication for anaphylaxis is epinephrine. Epinephrine acts quickly to reverse the symptoms by constricting blood vessels, relaxing bronchial muscles, and reducing laryngeal edema, making it the drug of choice for this situation. Promethazine, diphenhydramine, and hydroxyzine are not the first-line treatments for anaphylaxis. Promethazine is an antihistamine with sedative effects, Diphenhydramine is an antihistamine, and Hydroxyzine is also an antihistamine with sedative properties. While these medications can help with mild allergic reactions, they are not as effective or fast-acting as epinephrine in treating the severe manifestations of anaphylaxis.

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