The nurse has an order to give Lopressor 75 mg po. Lopressor is available in a 50 mg tablet. How many tablets should the nurse administer?

1.5 tablet

2 tablet

0.5 tablet

1 tablet

Answer and Explanation

The Correct Answer is A

A.   To achieve the prescribed dose of 75 mg and since Lopressor is available in 50 mg tablets, the nurse should administer 1 tablet (50 mg) plus another half tablet to make up the remaining 25 mg, totaling 1.5 tablets.
B.   To achieve the prescribed dose of 75 mg and since Lopressor is available in 50 mg tablets, the nurse should administer 1 tablet (50 mg) plus another half tablet to make up the remaining 25 mg, totaling 1.5 tablets.
C.   To achieve the prescribed dose of 75 mg and since Lopressor is available in 50 mg tablets, the nurse should administer 1 tablet (50 mg) plus another half tablet to make up the remaining 25 mg, totaling 1.5 tablets.
D.   To achieve the prescribed dose of 75 mg and since Lopressor is available in 50 mg tablets, the nurse should administer 1 tablet (50 mg) plus another half tablet to make up the remaining 25 mg, totaling 1.5 tablets.

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Correct Answer is C

Explanation

A. Half-life refers to the time it takes for the concentration of the medication in the bloodstream to decrease by half, not the lowest serum concentration.
B. Peak refers to the highest concentration of the medication in the bloodstream after administration.
C. Trough is the lowest concentration of medication in the bloodstream, typically measured just before the next dose is due to ensure adequate drug levels.
D. Toxic level refers to a concentration at which the medication may cause adverse effects, not the lowest serum concentration.

A. The patient has weekly laboratory tests for warfarin dosing. B. The patient uses four different pharmacies to fill his 16 prescriptions. C. The patient is allergic to strawberries, latex, and penicillin antibiotics. D. The patient takes three different medications to treat hypertension. E. The patient's daughter administers the patient's eyedrops every evening.

Correct Answer is ["B","D"]

Explanation

A. Weekly laboratory tests for warfarin dosing are appropriate monitoring but do not indicate polypharmacy risk.
B. Using multiple pharmacies can increase the risk of drug interactions and duplications, indicating a higher risk of polypharmacy.
C. Allergies do not directly relate to polypharmacy.
D. Taking multiple medications for the same condition (e.g., hypertension) can increase the risk of drug interactions and adverse effects, indicating polypharmacy.
E. Having a family member assist with medication administration does not directly indicate polypharmacy risk.

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The nurse has an order to give Lopressor 75 mg po. Lopressor is available in a 50 mg tablet. How many tablets should the nurse administer?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is assisting with teaching a class about pharmacodynamics. The nurse should include that which of the following medication levels occurs when a medication is at the lowest serum concentration?

Correct Answer is C

Explanation

Which assessment finding indicates that the patient is at risk from polypharmacy? (Select all that apply.)?

Correct Answer is ["B","D"]

Explanation

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