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.)

Answer and Explanation

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.

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Free Nursing Study Resources

Correct Answer is ["8"]

Explanation

To give the client the correct dose of phenytoin, the nurse needs to calculate the volume of the oral suspension that contains 200 mg of the drug. The formula for this calculation is:

Volume (mL) = Dose (mg) / Concentration (mg/mL)

The concentration of the oral suspension is 125 mg/5 mL, which means that 1 mL contains 25 mg of phenytoin. Therefore, the nurse can substitute these values into the formula:

Volume (mL) = 200 mg / 25 mg/mL

Volume (mL) = 8 mL

Therefore, the nurse should administer 8 mL of the oral suspension to the client.

Correct Answer is ["0.5"]

Explanation

To calculate the dosage of chlorpromazine for a client, the nurse needs to use the formula D/H x V, where D is the desired dose, H is the dose on hand, and V is the volume on hand.

In this case, D is 12.5 mg, H is 25 mg, and V is 1 mL. Plugging these values into the formula, we get:

12.5 mg / 25 mg x 1 mL = 0.5 mL

The nurse should administer 0.5 mL of chlorpromazine to the client.

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Naxlex Comprehensive Predictor Exams

A nurse is preparing to administer phenytoin 200 mg PO to a client. Available is phenytoin oral suspension 125 mg/5 mL. How many ml. 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.)

Correct Answer is ["8"]

Explanation

A nurse is preparing to administer chlorpromazine 12.5 mg IM to a client. Available is chlorpromazine 25 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["0.5"]

Explanation

1A nurse is preparing to administer cetirizine 5 mg PO. Available is cetirizine 2.5 mg/5 mL. How many ml 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.)

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A nurse is preparing to administer phenytoin 200 mg PO to a client. Available is phenytoin oral suspension 125 mg/5 mL. How many mL 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.)

A nurse is preparing to administer methylprednisolone acetate 60 mg IM. Available is methylprednisolone acetate injection 80 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)