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,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.)
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.)
Answer: 2 mg
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: 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.