a nurse is preparing to administer haloperidol 2 mg po every 12 hr the amount available is haloperidol 1 mgtablet how many tablets should the nurse a

ATI RN

ATI Pharmacology Quizlet

1. A healthcare professional is preparing to administer Haloperidol 2 mg PO every 12 hr. The available medication 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 calculate 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 correct dosage of Haloperidol.

2. Which of the following is considered a class IA Sodium Channel blocker?

A. Mexiletine
B. Amiodarone
C. Quinidine
D. Procainamide

Correct answer: D

Rationale: Procainamide is a class IA antiarrhythmic drug that acts as a sodium channel blocker by blocking fast sodium channels. Mexiletine is a class IB antiarrhythmic drug, not class IA. Amiodarone is a class III antiarrhythmic, and Quinidine is a class IA antiarrhythmic but not a sodium channel blocker.

3. A client is taking oral Oxycodone and Ibuprofen. The nurse should identify that an interaction between these two medications will cause which of the following findings?

A. A decrease in serum levels of ibuprofen, possibly leading to a need for increased doses of this medication.
B. A decrease in serum levels of oxycodone, possibly leading to a need for increased doses of this medication.
C. An increase in the expected therapeutic effect of both medications.
D. An increase in expected adverse effects for both medications.

Correct answer: C

Rationale: The interaction between oxycodone and ibuprofen results in an increase in the expected therapeutic effect of both medications. Oxycodone is a narcotic analgesic, while ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID). They work through different mechanisms but complement each other in pain management. When taken together, they can enhance the pain-relieving effects of each other, providing better pain relief for the client.

4. Hydrochlorothiazide is classified as a

A. Anti-inflammatory
B. Antiarrhythmic
C. Diuretic
D. Antifungal

Correct answer: C

Rationale: Hydrochlorothiazide is classified as a diuretic. Diuretics are medications that help the body get rid of excess salt and water by increasing urine production, reducing fluid retention, and lowering blood pressure. Option A, Anti-inflammatory, is incorrect because hydrochlorothiazide does not primarily reduce inflammation. Option B, Antiarrhythmic, is incorrect because hydrochlorothiazide is not used to correct heart rhythm irregularities. Option D, Antifungal, is incorrect because hydrochlorothiazide is not used to treat fungal infections.

5. When teaching a client with cancer who has a prescription for methotrexate, which supplement should the nurse instruct the client to take?

A. Folic acid
B. Magnesium
C. Vitamin D
D. Iron

Correct answer: A

Rationale: The correct answer is folic acid. Methotrexate is a folic acid antagonist, so instructing the client to take folic acid helps reduce the risk of methotrexate toxicity by providing additional folic acid that the medication may deplete. Magnesium (choice B), Vitamin D (choice C), and Iron (choice D) are not the correct supplements to instruct the client to take with methotrexate.