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Ati dosage calculation lpn fundamentals proctored assessment
Total Questions : 32
Showing 10 questions, Sign in for moreA nurse is reinforcing teaching with a newly hired nurse about documentation in the medical record. Which of the following abbreviations should the newly hired nurse identify as a metric unit of weight?
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.)
Explanation
Calculation:
- Convert the total daily dose from grams (g) to milligrams (mg).
Total daily dose = 3.9 g × 1000 mg/g
= 3900 mg/day.
- Determine the dose per administration.
The total daily dose is divided into equally divided doses every 12 hr, which means 2 doses per day.
Dose per administration = 3900 mg/day / 2 doses/day
= 1950 mg/dose.
Available strength of each tablet = 650 mg/tablet.
- Calculate the number of tablets to administer per dose.
Number of tablets per dose = Dose per administration (mg) / Available strength (mg/tablet)
= 1950 mg / 650 mg/tablet
= 3 tablets.
A nurse is preparing to administer megestrol 800 mg PO. Available is megestrol suspension 40 mg/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.)
Explanation
Calculation:
Desired dose = 800 mg.
Available concentration = 40 mg/mL.
- Calculate the volume to administer.
Volume (mL) = Desired dose (mg) / Available concentration (mg/mL)
= 800 mg / 40 mg/mL
= 20 mL.
A nurse is reviewing a client's new prescription for nitroglycerin 0.4 mg SL every 3 to 5 min PRN for chest pain. The nurse should instruct the client to do which of the following?
A nurse is preparing to administer gentamicin 1 mg/kg IM to a client who weighs 154 lb. Available is gentamicin solution 40 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.)
Explanation
Calculation:
- Convert the client's weight from pounds (lb) to kilograms (kg).
Weight in kg = 154 lb / 2.2 lb/kg
= 70 kg.
- Calculate the desired dose in milligrams (mg).
Desired dose (mg) = 1 mg/kg × 70 kg
= 70 mg.
Available concentration of the medication = 40 mg/mL.
- Calculate the volume in milliliters (mL) to administer.
Volume (mL) = Desired dose (mg) / Available concentration (mg/mL)
= 70 mg / 40 mg/mL
= 1.75 mL.
- Round the answer to the nearest tenth.
=1.8 mL.
A nurse is reviewing a client's instructions for their prescribed medications. The nurse should identify that which of the following instructions contains household units?
A nurse is preparing to administer diphenhydramine 35 mg IM. Available is diphenhydramine injection 50 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.)
Explanation
Calculation:
Desired dose = 35 mg.
Available concentration = 50 mg/mL.
- Calculate the volume to administer.
Volume (mL) = Desired dose (mg) / Available concentration (mg/mL)
= 35 mg / 50 mg/mL
= 0.7 mL.
A nurse is preparing to administer morphine 0.3 mg/kg PO to a client who weighs 99 lb. Available is morphine oral solution 4 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.)
Explanation
Calculation:
- Convert the client's weight from pounds (lb) to kilograms (kg).
Weight in kg = 99 lb / 2.2 lb/kg
= 45 kg.
- Calculate the desired dose in milligrams (mg).
Desired dose (mg) = 0.3 mg/kg × 45 kg
= 13.5 mg.
Available concentration of the medication = 4 mg/mL.
- Calculate the volume in milliliters (mL) to administer.
Volume (mL) = Desired dose (mg) / Available concentration (mg/mL)
= 13.5 mg / 4 mg/mL
= 3.375 mL.
- Round the answer to the nearest tenth.
=3.4 mL.
A nurse is preparing to administer 0.9% sodium chloride 1,500 mL IV to infuse over 1 hr. How many L will the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Calculation:
Total volume milliliters (mL) to be administered = 1,500 mL.
- Convert the total volume from milliliters (mL) to liters (L).
1,000 mL = 1 L.
Volume in L = Total volume (mL) / 1,000 mL/L
= 1,500 mL / 1,000 mL/L
= 1.5 L.
A nurse is preparing to administer cefazolin 250 mg IM to a client. Available is cefazolin powder for injection 500 mg vial. The nurse reconstitutes the powder with 2 mL of sterile water for a concentration of 225 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.)
Explanation
Calculation:
Desired dose = 250 mg.
Step 2: Identify the available concentration after reconstitution.
Available concentration = 225 mg/mL.
- Calculate the volume in milliliters (mL) to administer.
Volume (mL) = Desired dose (mg) / Available concentration (mg/mL)
= 250 mg / 225 mg/mL
= 1.111 mL.
- Round the answer to the nearest tenth.
= 1.1 mL.
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