ATI RN
ATI Pharmacology Quizlet
1. A healthcare professional is preparing to administer Haloperidol 2 mg PO every 12 hr. The available dosage is haloperidol 1 mg/tablet. How many tablets should the healthcare professional administer?
- A. 1 tablet
- B. 2 tablets
- C. 3 tablets
- D. 4 tablets
Correct answer: B
Rationale: To determine the number of tablets needed, divide the desired dose by the dose per tablet. In this case, (2 mg / 1 mg/tablet) = 2 tablets required to administer the prescribed dose of Haloperidol.
2. A client is prescribed Nitroglycerin sublingual tablets. Which of the following instructions should the nurse include during discharge teaching?
- A. Take the medication with food.
- B. Store the medication in a cool, dry place.
- C. Swallow the tablets whole.
- D. Take one tablet every 5 minutes up to three doses for chest pain.
Correct answer: D
Rationale: During a chest pain episode, the client should take one nitroglycerin tablet sublingually every 5 minutes up to a total of three doses. If chest pain persists after three doses, emergency medical attention should be sought. Nitroglycerin should not be swallowed but allowed to dissolve under the tongue for rapid absorption. Storing the medication in a cool, dry place helps maintain its effectiveness.
3. When a client is receiving treatment with methotrexate, which supplement should the nurse instruct the client to take?
- A. Folic acid
- B. Vitamin D
- C. Calcium
- D. Iron
Correct answer: A
Rationale: Folic acid supplementation is crucial for clients undergoing methotrexate treatment because methotrexate functions as a folic acid antagonist. By supplementing with folic acid, the risk of methotrexate toxicity can be minimized, improving the treatment's effectiveness and safety. Vitamin D, calcium, and iron are not specifically recommended in conjunction with methotrexate therapy and may not provide the same protective benefits as folic acid.
4. Why has an ACE inhibitor been prescribed following an MI?
- A. “This medication will lower your potassium level.”
- B. “ACE inhibitors have been found to reduce mortality following MI.”
- C. “ACE inhibitors are always prescribed with a beta blocker and calcium channel blocker following an MI.”
- D. “This medication will treat your hypotension.”
Correct answer: B
Rationale: Following a myocardial infarction (MI), ACE inhibitors are commonly prescribed due to their proven benefit in reducing mortality and improving outcomes post-MI. These medications help by decreasing the workload of the heart, preventing remodeling of the heart chambers, and improving survival rates. While ACE inhibitors may have effects on potassium levels, the primary reason for their prescription post-MI is their mortality-reducing properties.
5. A client with angina asks about obtaining a prescription for sildenafil to treat erectile dysfunction. Which of the following medications is contraindicated with Sildenafil?
- A. Aspirin
- B. Isosorbide
- C. Clopidogrel
- D. Atorvastatin
Correct answer: B
Rationale: Isosorbide is an organic nitrate used to manage angina. Concurrent use of sildenafil with organic nitrates, like isosorbide, is contraindicated due to the risk of fatal hypotension. It is essential for clients to avoid taking nitrate medications within 24 hours of using isosorbide to prevent serious complications.
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