Dosage Calculation Practice
A patient has an order for Chloromycetin, 500 mg every 6 hours. The drug comes in 250
mg capsules. What would the nurse administer? - ANSWER 2 tabs
A nurse is to administer 150 mg of a drug intramuscularly. The label on the multidose
vials reads 100 mg/mL. How much would the nurse give? - ANSWER 1.5 mL
A nurse is to administer 30 mg of furosemide (Lasix) to a client with congestive heart
failure (CHF). The vial contains 40 mg/mL. Which is the correct dose to administer? -
ANSWER 0.75 mL
The nurse is providing discharge teaching for a client who has been prescribed 600 mg
of an oral liquid medication. The mother shows the nurse the label of the medication,
which reads: 250 mg/mL. The nurse would instruct the mother to give how many
milliliters? - ANSWER 2.4 mL
A child is to receive 500 mg of an antibiotic suspension. The label on the bottle reads
250 mg/5 mL. The nurse should administer how much of the suspension in one dose? -
ANSWER 10 mL
A health care provider orders 250 mg of an antibiotic suspension. The label on the
suspension reads "500 mg/5 mL." How much would the nurse administer? - ANSWER
2.5 mL
The client is to be given ascorbic acid 1 g daily by mouth. The medication comes in a
container labeled, "Ascorbic Acid 250 mg tablets." How much will the nurse give? -
ANSWER 4 tabs
convert grams to mg (Times by 1000)
= (1 gram)(1000)=1000mg
=1000mg/250mg= 4 tablets
The PCP orders amoxicillin 250 mg by mouth two times a day. The drug label reads
"Amoxicillin 125 mg/5 ml." How much will the nurse administer? - ANSWER 10 mL
A nurse is to administer 175 mg of a medication intramuscularly. The label on the
multidose vial states that the concentration is 100 mg/mL. What volume of the drug
should the nurse administer? - ANSWER 1.7 mL
The nurse is preparing to administer 80 mg of Solu-medrol intravenously (IV) to a client
with pneumonia. The vial states that it has 120 mg per 2 mL. The nurse would correctly
draw up which amount? - ANSWER 1.3 mL
, The health care provider prescribes ascorbic acid 0.5 g daily. The drug label reads
ascorbic acid 250 mg. The nurse would administer how many tablets? - ANSWER 2
tabs
convert grams first
(0.5grams) (1000mg)= 500mg
= 500mg/250mg= 2 tablets
A client is being treated for congestive heart failure (CHF) and is to receive 0.5
milligrams of digoxin, which is available in 250-microgram tablets. The nurse would
correctly administer how many tablets? - ANSWER 2 tabs
convert milligrams to MICROgrams= (0.5)(1000)
=500/250= 2 tablets
The nurse is to administer 25 mg of meperidine (Demerol). The vial states that it
contains meperidine 50mg/1 mL. How much medication should the nurse draw up for
the ordered dosage? - ANSWER 0.5 mL
A nurse needs to convert 3 fluid ounces to the metric system equivalent. The nurse
performs the calculation to find which result? - ANSWER 90 mL
1 ounce equals 29.5735 Milliliters
=30ml
= (30ml)(3)= 90ml
A client has been prescribed a one-time dose of 4 mg morphine IV. The medication is
available in ampules of 10 mg/mL. What volume of morphine should the nurse draw up?
- ANSWER 0.4 mL
A physical orders 75 mcg of a drug IM daily. The drug is available in a vial labeled 0.5
mg in 5 mL. How many mL with the patient receive? - ANSWER 0.75 mL
convert first! (mcg to mg)
= 75mcg / 1000= 0.075
= 0..5 = 0.15
= (0.15) ( 5ml)= 0.75
=0.75ml
The patient is to receive 750 mg of a drug PO daily. The drug bottle is labeled 0.5 g in 5
mL. How many Tbs will the patient receive? - ANSWER 0.5 Tbs
convert first!
The order is for 1 g of a medication PO BID. The pharmacy sends the medication
labeled 200 mg in 5 mL. How many mL should the nurse administer? - ANSWER 25 mL
A patient has an order for Chloromycetin, 500 mg every 6 hours. The drug comes in 250
mg capsules. What would the nurse administer? - ANSWER 2 tabs
A nurse is to administer 150 mg of a drug intramuscularly. The label on the multidose
vials reads 100 mg/mL. How much would the nurse give? - ANSWER 1.5 mL
A nurse is to administer 30 mg of furosemide (Lasix) to a client with congestive heart
failure (CHF). The vial contains 40 mg/mL. Which is the correct dose to administer? -
ANSWER 0.75 mL
The nurse is providing discharge teaching for a client who has been prescribed 600 mg
of an oral liquid medication. The mother shows the nurse the label of the medication,
which reads: 250 mg/mL. The nurse would instruct the mother to give how many
milliliters? - ANSWER 2.4 mL
A child is to receive 500 mg of an antibiotic suspension. The label on the bottle reads
250 mg/5 mL. The nurse should administer how much of the suspension in one dose? -
ANSWER 10 mL
A health care provider orders 250 mg of an antibiotic suspension. The label on the
suspension reads "500 mg/5 mL." How much would the nurse administer? - ANSWER
2.5 mL
The client is to be given ascorbic acid 1 g daily by mouth. The medication comes in a
container labeled, "Ascorbic Acid 250 mg tablets." How much will the nurse give? -
ANSWER 4 tabs
convert grams to mg (Times by 1000)
= (1 gram)(1000)=1000mg
=1000mg/250mg= 4 tablets
The PCP orders amoxicillin 250 mg by mouth two times a day. The drug label reads
"Amoxicillin 125 mg/5 ml." How much will the nurse administer? - ANSWER 10 mL
A nurse is to administer 175 mg of a medication intramuscularly. The label on the
multidose vial states that the concentration is 100 mg/mL. What volume of the drug
should the nurse administer? - ANSWER 1.7 mL
The nurse is preparing to administer 80 mg of Solu-medrol intravenously (IV) to a client
with pneumonia. The vial states that it has 120 mg per 2 mL. The nurse would correctly
draw up which amount? - ANSWER 1.3 mL
, The health care provider prescribes ascorbic acid 0.5 g daily. The drug label reads
ascorbic acid 250 mg. The nurse would administer how many tablets? - ANSWER 2
tabs
convert grams first
(0.5grams) (1000mg)= 500mg
= 500mg/250mg= 2 tablets
A client is being treated for congestive heart failure (CHF) and is to receive 0.5
milligrams of digoxin, which is available in 250-microgram tablets. The nurse would
correctly administer how many tablets? - ANSWER 2 tabs
convert milligrams to MICROgrams= (0.5)(1000)
=500/250= 2 tablets
The nurse is to administer 25 mg of meperidine (Demerol). The vial states that it
contains meperidine 50mg/1 mL. How much medication should the nurse draw up for
the ordered dosage? - ANSWER 0.5 mL
A nurse needs to convert 3 fluid ounces to the metric system equivalent. The nurse
performs the calculation to find which result? - ANSWER 90 mL
1 ounce equals 29.5735 Milliliters
=30ml
= (30ml)(3)= 90ml
A client has been prescribed a one-time dose of 4 mg morphine IV. The medication is
available in ampules of 10 mg/mL. What volume of morphine should the nurse draw up?
- ANSWER 0.4 mL
A physical orders 75 mcg of a drug IM daily. The drug is available in a vial labeled 0.5
mg in 5 mL. How many mL with the patient receive? - ANSWER 0.75 mL
convert first! (mcg to mg)
= 75mcg / 1000= 0.075
= 0..5 = 0.15
= (0.15) ( 5ml)= 0.75
=0.75ml
The patient is to receive 750 mg of a drug PO daily. The drug bottle is labeled 0.5 g in 5
mL. How many Tbs will the patient receive? - ANSWER 0.5 Tbs
convert first!
The order is for 1 g of a medication PO BID. The pharmacy sends the medication
labeled 200 mg in 5 mL. How many mL should the nurse administer? - ANSWER 25 mL
