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.
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
The nurse should instruct the client to administer the medication through clothing if necessary.
In an emergency, an epinephrine auto-injector can be given through clothing.
Choice A is wrong because massaging the site after injection is not mentioned as something to avoid in the instructions for using an epinephrine auto-injector.
Choice B is wrong because the medication should be injected into the outer thigh, not the abdomen.
Choice D is wrong because aspiration prior to administration of the medication is not mentioned as a necessary step in the instructions for using an epinephrine auto-injector.
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.
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