what is the therapeutic action of phenytoin
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Nursing Elites

ATI RN

ATI Pharmacology Proctored Exam 2024

1. What is the therapeutic action of Phenytoin?

Correct answer: B

Rationale: Phenytoin is primarily used as an anticonvulsant to prevent and control seizures. It works by stabilizing electrical activity in the brain, making it effective in managing conditions like epilepsy. Antidiabetic medications are used to regulate blood sugar levels, mood stabilizers help manage mood disorders, and antianxiety agents are used to reduce anxiety symptoms, none of which are the primary therapeutic action of Phenytoin.

2. What finding should a nurse monitor for as an adverse effect when a client has a new prescription for Spironolactone?

Correct answer: A

Rationale: The correct answer is hyperkalemia. Spironolactone is a potassium-sparing diuretic that can lead to an increase in potassium levels. Hyperkalemia can be dangerous, causing muscle weakness and cardiac dysrhythmias. Monitoring potassium levels closely is crucial when a client is on Spironolactone. Hypoglycemia (choice B) is incorrect because Spironolactone does not typically affect blood glucose levels. Hypocalcemia (choice C) and hyponatremia (choice D) are also incorrect as Spironolactone's primary impact is on potassium levels.

3. A client is receiving Enoxaparin for the prevention of deep vein thrombosis. Which of the following actions should the nurse take?

Correct answer: C

Rationale: Enoxaparin, a medication used for preventing deep vein thrombosis, should be administered into the subcutaneous tissue, typically in the abdomen. Administering the medication intramuscularly (Choice B) or into the deltoid muscle (Choice D) is incorrect because Enoxaparin is specifically formulated for subcutaneous administration. Massaging the injection site after administration (Choice A) is contraindicated as it may lead to tissue damage and affect the absorption of the medication. Therefore, the correct action is to administer the medication into the subcutaneous tissue as directed.

4. A client is receiving combination chemotherapy. Which of the following findings should the nurse identify as an indication of an oncologic emergency?

Correct answer: C

Rationale: A temperature of 38.1°C (100.6°F) can indicate an infection, which is considered an oncologic emergency in clients receiving chemotherapy due to the increased risk of sepsis in immunocompromised individuals. Dry oral mucous membranes (Choice A), nausea and vomiting (Choice B), and anorexia (Choice D) are common side effects of chemotherapy but do not typically indicate an oncologic emergency requiring immediate intervention.

5. A healthcare professional in a provider's office is reviewing the medical record of a client who is pregnant and is at her first prenatal visit. Which of the following immunizations may the healthcare professional administer safely to this client?

Correct answer: C

Rationale: The correct answer is C, the inactivated influenza vaccine. During pregnancy, the Centers for Disease Control and Prevention (CDC) recommend the inactivated influenza vaccine as safe for pregnant individuals. This vaccination is crucial to protect both the pregnant person and their developing baby from influenza-related complications. It is essential to avoid live vaccines, such as varicella (chickenpox), rubella, and measles vaccines during pregnancy due to the theoretical risk of harm to the fetus. Choices A, B, and D are incorrect because live vaccines are generally contraindicated during pregnancy.

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