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A nurse is preparing to administer sulfadiazine 150mg/kg PO to divide equally every 6 hr to an adolescent who weighs 88 Ib.

Available is sulfadiazine 500 mg/tab.
How many tablets should the nurse administer per dose?

(Round to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.).

1 tablet.

3 tablets.

4 tablets.

8 tablets.

Answer and Explanation

The Correct Answer is B

Step 1: Convert weight from lb to kg.

88 lb ÷ 2.2 = 40 kg

Step 2: Calculate total daily dose in mg.

150 mg/kg × 40 kg = 6000 mg

Step 3: Calculate dose per administration (every 6 hr).

6000 mg ÷ 4 = 1500 mg

Step 4: Calculate number of tablets per dose.

1500 mg ÷ 500 mg/tab = 3 tablets

Answer:

3 tablets per dose.

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Naxlex Comprehensive Predictor Exams

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Free Nursing Study Resources

Correct Answer is C

Explanation

A. Assist the client to a left lateral position.
- This is generally used for clients at risk of aspiration, and it's not indicated based on the lithium level.
B. Implement fluid restrictions.
- Fluid restrictions are usually implemented when there is a risk of fluid overload or hyponatremia, and not in this case. In fact, dehydration can raise lithium levels to toxic levels, so proper hydration is important.
C. Request a dosage increase from the provider.
- While 0.6 mEq/L is within the therapeutic range, some providers may want to see a level slightly higher for maintenance. So requesting a dosage increase from the provider is the correct action.
D. Prepare the client for hemodialysis.
- Hemodialysis is used to remove lithium from the blood in cases of severe lithium toxicity, which is indicated by levels significantly higher than 1.5 mEq/L. This is not needed when the lithium level is 0.6 mEq/L.

A. Blurred vision. B. Hematuria. C. Tinnitus. D. Paresthesias.

Correct Answer is D

Explanation

The nurse should include paresthesias as an adverse effect of ergotamine in the teaching.

Paresthesias refers to a sensation of tingling, tickling, prickling, or burning of a person’s skin with no apparent physical cause.

Choice A is wrong because blurred vision is not a commonly reported adverse effect of ergotamine.

Choice B is wrong because hematuria is not a commonly reported adverse effect of ergotamine.

Choice C is wrong because tinnitus is not a commonly reported adverse effect of ergotamine.

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Naxlex Comprehensive Predictor Exams

A nurse is reviewing the laboratory report of a client who has bipolar disorder prior to the administration of lithium carbonate. The client's lithium level is.6 mEq/L. Which of the following actions should the nurse take?

Correct Answer is C

Explanation

A nurse is providing teaching about the adverse effects of ergotamine to a client who has migraine headaches. Which of the following adverse effects should the nurse include in the teaching?

Correct Answer is D

Explanation

A nurse is planning to administer a controlled substance to a client who is experiencing pain. Which of the following actions should the nurse plan to take first?

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