ATI DOSAGE CALCULATION RN FUNDAMENTALS PROCTORED
ASSESSMENT 3.2 QUESTIONS WITH VERIFIED DETAILED ANSWERS
(RATED A+)
A nurse is preparing to administer codeine 20 mg PO every 6 hr PRN pain.
Available is codeine oral solution 10 mg/ 5 ml. How many ml should the nurse
administer per dose?
(Round to the nearest whole number. Use a leading zero if it applies. Do not use a
trailing zero.) - (ANSWERS)Answer: 10 ml
Follow these steps for the Ratio and Proportion method of calculation:
Step 1: What is the unit of measurement the nurse should calculate? Ml
Step 2: What is the dose the nurse should administer? Dose to administer = Desired
20 mg
Step 3: What is the dose available? Dose available = Have 10 mg
Step 4: Should the nurse convert the units of measurement? No
Step 5: What is the quantity of the dose available? 5 ml
Step 6: Set up an equation and solve for X.
Have/Quantity = Desired/X
10 mg/ 5 ml = 20 mg/ X ml
X ml = 10 ml
Step 7: Round if necessary.
Step 8: Determine whether the amount to administer makes sense. If there are 10
mg/5 ml and the prescription reads 20 mg, it makes sense to administer 10 ml. The
nurse should administer codeine oral solution 10 ml PO every 6 hr PRN pain.
A nurse is preparing to administer eszopiclone 2,000 mcg PO to a client. How many
mg should the nurse administer?
(Round to the nearest whole number. Use a leading zero if it applies. Do not use a
trailing zero.) - (ANSWERS)Answer: 2 mg
Follow these steps for the Ratio and Proportion method of calculation:
, ATI DOSAGE CALCULATION RN FUNDAMENTALS PROCTORED
ASSESSMENT 3.2 QUESTIONS WITH VERIFIED DETAILED ANSWERS
(RATED A+)
Step 1: What is the unit of measurement the nurse should calculate? Mg
Step 2: What is the dose the nurse should administer? Dose to administer = Desired
2,000 mcg
Step 3: What is the dose available? Dose available = Have 1 mg
Step 4: Should the nurse convert the units of measurement? Yes (mcg does not equal
mg)
1,000 mcg/1 mg = 2,000 mcg/X mg
X mg = 2 mg
Step 5: Round if necessary.
Step 6: Determine whether the amount to administer makes sense. If the prescription
reads 2,000 mcg and 1,000 mcg equals 1 mg, it makes sense to administer 2 mg. The
nurse should administer eszopiclone 2 mg PO.
A nurse is preparing to administer tobramycin 4 mg/kg/day IM divided in three
equal doses to a patient who weighs 60 kg. Available is tobramycin 40 mg/ml. How
many ml should the nurse administer per dose?
(Round to the nearest whole number. Use a leading zero if it applies. Do not use a
trailing zero.) - (ANSWERS)Answer: 2 ml
Follow these steps for the Ratio and Proportion method of calculation:
Step 1: What is the unit of measurement the nurse should calculate? Mg
Step 2: Set up an equation and solve for X.
X = Dose per kg × Client's weight in kg
X mg = 4 mg/kg × 60 kg
X mg = 240 mg
The dose is divided into three equal doses; therefore, divide X by 3.
240 mg = 80 mg3
Step 3: What is the unit of measurement the nurse should calculate? Ml
Step 4: What is the dose the nurse should administer? Dose to administer = Desired
, ATI DOSAGE CALCULATION RN FUNDAMENTALS PROCTORED
ASSESSMENT 3.2 QUESTIONS WITH VERIFIED DETAILED ANSWERS
(RATED A+)
80 mg
Step 5: What is the dose available? Dose available = Have 40 mg
Step 6: Should the nurse convert the units of measurement? No
Step 7: What is the quantity of the dose available? 1 ml
Step 8: Set up an equation and solve for X.
Have/Quantity = Desired/X
40 mg/1 ml = 80 mg/X ml
X ml = 2 ml
Step 9: Round if necessary.
Step 10: Determine whether the amount to administer makes sense. If there are 40
mg/ml and the prescription reads 4 mg/kg/day divided in three equal doses, it makes
sense to administer 2 ml. The nurse should administer tobramycin 2 ml IM per dose.
A nurse is preparing to administer meperidine 75 mg IM stat. Available is
meperidine injection 100 mg/ml. How many ml should the nurse administer?
(Round answer to nearest hundredth. Use a leading zero if it applies. Do not use a
trailing zero.) - (ANSWERS)Answer: 0.75 ml
Follow these steps for the Ratio and Proportion method of calculation:
Step 1: What is the unit of measurement the nurse should calculate? Ml
Step 2: What is the dose the nurse should administer? Dose to administer = Desired
75 mg
Step 3: What is the dose available? Dose available = Have 100 mg
Step 4: Should the nurse convert the units of measurement? No
Step 5: What is the quantity of the dose available? 1 ml
Step 6: Set up an equation and solve for X.
Have/Quantity = Desired/X
100 mg / 1ml =75 mg/ X ml
X ml = 0.75 ml
ASSESSMENT 3.2 QUESTIONS WITH VERIFIED DETAILED ANSWERS
(RATED A+)
A nurse is preparing to administer codeine 20 mg PO every 6 hr PRN pain.
Available is codeine oral solution 10 mg/ 5 ml. How many ml should the nurse
administer per dose?
(Round to the nearest whole number. Use a leading zero if it applies. Do not use a
trailing zero.) - (ANSWERS)Answer: 10 ml
Follow these steps for the Ratio and Proportion method of calculation:
Step 1: What is the unit of measurement the nurse should calculate? Ml
Step 2: What is the dose the nurse should administer? Dose to administer = Desired
20 mg
Step 3: What is the dose available? Dose available = Have 10 mg
Step 4: Should the nurse convert the units of measurement? No
Step 5: What is the quantity of the dose available? 5 ml
Step 6: Set up an equation and solve for X.
Have/Quantity = Desired/X
10 mg/ 5 ml = 20 mg/ X ml
X ml = 10 ml
Step 7: Round if necessary.
Step 8: Determine whether the amount to administer makes sense. If there are 10
mg/5 ml and the prescription reads 20 mg, it makes sense to administer 10 ml. The
nurse should administer codeine oral solution 10 ml PO every 6 hr PRN pain.
A nurse is preparing to administer eszopiclone 2,000 mcg PO to a client. How many
mg should the nurse administer?
(Round to the nearest whole number. Use a leading zero if it applies. Do not use a
trailing zero.) - (ANSWERS)Answer: 2 mg
Follow these steps for the Ratio and Proportion method of calculation:
, ATI DOSAGE CALCULATION RN FUNDAMENTALS PROCTORED
ASSESSMENT 3.2 QUESTIONS WITH VERIFIED DETAILED ANSWERS
(RATED A+)
Step 1: What is the unit of measurement the nurse should calculate? Mg
Step 2: What is the dose the nurse should administer? Dose to administer = Desired
2,000 mcg
Step 3: What is the dose available? Dose available = Have 1 mg
Step 4: Should the nurse convert the units of measurement? Yes (mcg does not equal
mg)
1,000 mcg/1 mg = 2,000 mcg/X mg
X mg = 2 mg
Step 5: Round if necessary.
Step 6: Determine whether the amount to administer makes sense. If the prescription
reads 2,000 mcg and 1,000 mcg equals 1 mg, it makes sense to administer 2 mg. The
nurse should administer eszopiclone 2 mg PO.
A nurse is preparing to administer tobramycin 4 mg/kg/day IM divided in three
equal doses to a patient who weighs 60 kg. Available is tobramycin 40 mg/ml. How
many ml should the nurse administer per dose?
(Round to the nearest whole number. Use a leading zero if it applies. Do not use a
trailing zero.) - (ANSWERS)Answer: 2 ml
Follow these steps for the Ratio and Proportion method of calculation:
Step 1: What is the unit of measurement the nurse should calculate? Mg
Step 2: Set up an equation and solve for X.
X = Dose per kg × Client's weight in kg
X mg = 4 mg/kg × 60 kg
X mg = 240 mg
The dose is divided into three equal doses; therefore, divide X by 3.
240 mg = 80 mg3
Step 3: What is the unit of measurement the nurse should calculate? Ml
Step 4: What is the dose the nurse should administer? Dose to administer = Desired
, ATI DOSAGE CALCULATION RN FUNDAMENTALS PROCTORED
ASSESSMENT 3.2 QUESTIONS WITH VERIFIED DETAILED ANSWERS
(RATED A+)
80 mg
Step 5: What is the dose available? Dose available = Have 40 mg
Step 6: Should the nurse convert the units of measurement? No
Step 7: What is the quantity of the dose available? 1 ml
Step 8: Set up an equation and solve for X.
Have/Quantity = Desired/X
40 mg/1 ml = 80 mg/X ml
X ml = 2 ml
Step 9: Round if necessary.
Step 10: Determine whether the amount to administer makes sense. If there are 40
mg/ml and the prescription reads 4 mg/kg/day divided in three equal doses, it makes
sense to administer 2 ml. The nurse should administer tobramycin 2 ml IM per dose.
A nurse is preparing to administer meperidine 75 mg IM stat. Available is
meperidine injection 100 mg/ml. How many ml should the nurse administer?
(Round answer to nearest hundredth. Use a leading zero if it applies. Do not use a
trailing zero.) - (ANSWERS)Answer: 0.75 ml
Follow these steps for the Ratio and Proportion method of calculation:
Step 1: What is the unit of measurement the nurse should calculate? Ml
Step 2: What is the dose the nurse should administer? Dose to administer = Desired
75 mg
Step 3: What is the dose available? Dose available = Have 100 mg
Step 4: Should the nurse convert the units of measurement? No
Step 5: What is the quantity of the dose available? 1 ml
Step 6: Set up an equation and solve for X.
Have/Quantity = Desired/X
100 mg / 1ml =75 mg/ X ml
X ml = 0.75 ml
