A nurse is preparing to administer promethazine 25 mg PO to a client. Available is promethazine 12.5 mg tablets. How many tablets should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["2"]
To calculate the number of tablets needed to administer promethazine 25 mg PO, the nurse should use the following formula:
(number of tablets) = (desired dose) / (available dose)
Substituting the values given in the question, we get:
(number of tablets) = (25 mg) / (12.5 mg)
Simplifying, we get:
(number of tablets) = 2
Therefore, the nurse should administer 2 tablets of promethazine 12.5 mg to the client.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["50"]
Explanation
To calculate the dose of diclofenac sodium per administration, the nurse should divide the total daily dose by the number of doses per day.
In this case, the total daily dose is 200 mg and the number of doses per day is 4 (every 6 hr).
Therefore, the dose per administration is 200 mg / 4 = 50 mg.
The nurse should administer 50 mg of diclofenac sodium PO every 6 hr.
Correct Answer is ["3"]
Explanation
To calculate the number of tablets that the nurse should administer per dose, the nurse needs to convert the prescribed dose of calcium carbonate from grams to milligrams and then divide it by the strength of the available tablets. The formula is:
Prescribed dose (mg) / Tablet strength (mg) = Number of tablets
The prescribed dose of calcium carbonate is 3.9 g PO daily in equally divided doses every 12 hr.
To convert grams to milligrams, multiply by 1000.
Therefore, 3.9 g = 3900 mg.
Since the doses are equally divided every 12 hr, the nurse needs to divide the daily dose by 2 to get the dose per 12 hr. Therefore, 3900 mg / 2 = 1950 mg.
The available tablets have a strength of 650 mg each.
To find the number of tablets per dose, divide the dose per 12 hr by the tablet strength.
Therefore, 1950 mg / 650 mg = 3 tablets.
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