A nurse is preparing to administer calcium carbonate 3.9 g PO daily in equally divided doses every 12 hr. Available is calcium carbonate 650 mg tablets. How many tablets should the nurse administer per dose? (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 ["3"]
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.
Nursing Test Bank
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Related Questions
Correct Answer is ["8"]
Explanation
To calculate the dose of phenytoin oral suspension, the nurse should use the following formula:
Dose (mL) = Desired dose (mg) / Concentration (mg/mL) x Volume (mL)
Plugging in the values from the question, we get:
Dose (mL) = 200 mg / 125 mg/5 mL x 5 mL
Simplifying the equation, we get:
Dose (mL) = 8 mL
Correct Answer is ["2"]
Explanation
To calculate the number of capsules needed to administer 0.5 g of cefaclor PO, the nurse should use the following formula:
Number of capsules = (Desired dose / Available dose) x 1 capsule
Plugging in the values from the question, we get:
Number of capsules = (0.5 g / 0.25 g) x 1 capsule
Number of capsules = 2 capsules
Therefore, the nurse should plan to administer 2 capsules of cefaclor PO to the client.
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