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A nurse is caring for a client who has a new prescription for interferon beta-1a 11 mcg subcutaneous three times weekly. Available is interferon beta-1a injection 22 mcg/0.5 mL. How many mL should the nurse administer per dose? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)

Answer and Explanation

The Correct Answer is ["0.25"]

To calculate the dosage of interferon beta-1a for the client, the nurse should use the following formula:

Dose (mL) = Desired dose (mcg) / Available dose (mcg/mL)

Plugging in the values from the prescription and the medication label, we get:

Dose (mL) = 11 mcg / 22 mcg/0.5 mL

Simplifying the fraction, we get:

Dose (mL) = 0.5 / 2

Dividing both sides by 2, we get:

Dose (mL) = 0.25

Therefore, the nurse should administer 0.25 mL of interferon beta-1a per dose.

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Correct Answer is ["100"]

Explanation

To determine the number of doses in the vial, we can use the information provided on the label. The vial contains 10 mL of insulin glargine, and each mL has a concentration of 100 units.

Number of units in the vial = Concentration * Volume

Number of units in the vial = 100 units/mL * 10 mL

Number of units in the vial = 1000 units

Therefore, the vial contains 1000 units of insulin glargine. Since the client is to receive 10 units per dose, we can calculate the number of doses:

Number of doses = Total units in the vial / Units per dose

Number of doses = 1000 units / 10 units/dose

Number of doses = 100 doses

So, the vial contains 100 doses of insulin glargine.

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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Naxlex Comprehensive Predictor Exams

Correct Answer is ["100"]

Explanation

Correct Answer is ["3"]

Explanation

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