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DOSAGE CALCULATIONS EXAM 2025/2026 | 100% VERIFIED
QUESTIONS & STEP-BY-STEP ANSWERS || MEDICATION MATH •
CONVERSIONS • IV CALCULATIONS || BRAND NEW A+ STUDY PACK
|| NURSING MATH MADE EASY
Heparin protocol is prescribed for a client weighing 90 kg. Per protocol, the heparin loading dose
is 60 units/kg IV rounded to the nearest 100 units, with a maximum loading dose of 4,000 units.
The heparin vial is labeled 5,000 units/ml. How many ml should the nurse administer? (Enter the
numeric value only. If rounding is required, round to the nearest tenth.)
false Item 51164 By Sheila Duncan Heparin Protocol:
Heparin loading dose: 60 units/kg IV, rounded to the nearest 100 units, followed by a
maintenance infusion of 12 units/kg/hr, rounded to the nearest 100 units/hr. The maximum bolus
is 4,000 units and the maximum initial infusion is 1000 units/hr.
Determine the client loading dose: 60 units x 90 kg = 5,400 unit.
Per protocol, use the maximum loading dose of 4,000 units, and calculate the client's dose using
the formula D/H x Q = 4,000 units / 5,000 units x 1 ml = 4/5 = 0.8 ml
or Use ratio and proportion: 5,000 : 1 ml :: 4,000 : X
X = 0.8 ml
A child weighing 28.4 kg is in hypertensive crisis. The healthcare provider prescibes methyldopa
(Aldomet) 40 mg/kg/day IV in 4 divided doses. The pharmacy provides a 50 mg/ml injection
vial. How many ml should the nurse administer? (Enter numeric value only. If rounding is
required, round to the nearest tenth.)
First calculate the total mg dose/day: 40 mg x 28.4 kg = 1136 mg/day
Next divide the total mg into the 4 dosages for the day: 1136 mg/4 doses = 284 mg/dose
Using the Desired/Have formula: 284 mg/50mg x 1 ml = 5.68 ml/ dose, rounded to 5.7 ml.
A client with multiple sclerosis and muscle spasms receives a prescription for baclofen
(Kemstro) 30 mg PO daily. The medication is supplied from the pharmacy in 20 mg scored
tablets. How many tablets should the nurse administer? (Enter numeric value only. If rounding is
required, round to the nearest tenth.)
Use ratio and proportion, 30 mg : X tablets = 20 mg : 1 tablet
20X = 30
X = 1.5
A client with dehydration receives a prescription for an IV of Lactated Ringer's 1,000 ml to be
administered over 8 hours. The nurse should program the infusion pump to deliver how many
ml/hour? (Enter numeric value only, using whole number.)
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Use the ratio of: 1000 ml : 8 hours :: X : 1 hour
1000/X :: 8/1
X = 125 ml/hour
The nurse plans to administer labetalol hydrochloride (Trandate) 0.3 grams PO to a client with
hypertension. Trandate is available in 200 mg scored tablets. How many tablets should the nurse
administer? (Enter numeric value only.)
First convert grams to milligrams using the known conversion: 1 gram = 1000 mg.
0.1 gram = 100 mg as 0.3 gram = 300 mg
Next using the formula, Desired/Available x 1 tablet =
300 mg/200 mg x 1 = 1.5 tablets
A 110-pound, adult female is admitted to the Emergency Center after receiving burns to 40
percent of her body. Using the Parkland formula, the client's fluid requirements for the first 24
hours after injury is calculated using Lactated Ringer's 4 ml solution x Body weight (in
kilograms) x Percent burn. The client should receive one-half of the 24-hour calculated fluid
volume in the first 8 hours of treatment. The nurse should set the infusion pump to deliver how
many ml/hour during the first 8 hours? (Enter the numerical value only. If rounding is required,
round to the nearest whole number.)
Using the Parkland formula, the client's fluid requirements for the first 24 hours after injury is
calculated using 4 ml lactated Ringer's solution x Body weight (in kilograms) x Percent burn
Convert 110 pounds to kg = .2 = 50 kg
4 ml x 50 kg x 40 = 8,000 ml
One-half in first 8 hours = 4,000 ml
4,000 ml / 8 hours = 500 = 500 ml/hour
A client who has heart failure with paroxysmal atrial tachycardia is receiving digoxin (Lanoxin)
0.45 mg IV as the inital digitalizing dose. The pharmacy provides 0.25 mg/ml. How many ml
should the nurse administer? (Enter numeric value only. If rounding is required, round to the
nearest tenth.)
Using the formula D/H x Q = 0.45 mg/0.25 mg x 1 mL = 1.8 ml
Mineral oil U.S.P 30 ml PO daily for 3 days is prescribed for a client who is experiencing severe
constipation. The dose cup is marked in tablespoons. How many tablespoons should the nurse
administer? (Enter numeric value only.)
15 ml equals 1 Tablespoon. Use the ratio equation: 15 ml : 1 Tbs :: 30 ml : X
:: 1 / X
15X = 30
X = 2 Tablespoons
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A client is receiving an IV solution of 2 grams of medication diluted in 100 ml of normal saline
over a one hour time period. How many mg of medication is the client receiving per minute?
(Enter numeric value only. If rounding is required, round to the nearest whole number.)
2 grams = 2000 mg
1 hour = 60 minutes
2000 mg/60 minutes = 33.333 mg/minute, rounded to 33 mg/minute
Oxytocin (Pitocin) 4 milliunits/minute IV is prescribed for a client with an ineffective
contraction pattern. To administer the prescribed dosage, the nurse adds 20 units of oxytocin to
Ringer's Lactate 1,000 ml . The infusion pump should be set to deliver how many ml/hour. (Enter
numeric value only.)
4 milliunits/min x 1 unit/1000 milliunits x 1000 ml/20 units x 60 min/hr = 240,000/20,000 = 12
ml/hour
A client who had a small bowel resection two weeks ago is receiving 3/4 strength Ensure
feedings 275 ml every 4 hours via nasogastric tube. Full strength Ensure is available in a 240 ml
can. The nurse should use how many ml of Ensure to prepare the feeding? (Enter numeric value
only. Round to nearest whole number if needed.)
Using the formula Desired % / on Hand % x Volume Desired = 75/100 x 275 = 0.75 x 275 = 206
Ensure
206 ml Ensure + 69 ml water = 275 ml (75% solution)
An adult client with myasthenia gravis is receiving pyridostigmine (Mestinon) 126 mg PO every
4 hours. The drug is available as 60 mg in 5 ml syrup. How many ml should the nurse
administer? (If rounding is required, round to the nearest tenth.)
Using the formula, Desired dose / dose on Hand x Quantity of volume on hand (D/H x Q)
126 mg / 60 mg x 5 ml = 10.5 ml
A client weighing 86 kg is receiving dopamine at 8 mcg/kg/minute. The drug is dispensed as
dopamine 800 mg/500 ml. The nurse should program the infusion pump to deliver how many
ml/hour? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
First, change the concentration of dispensed dopamine to mcg/ml. 1 mg : 1000 mcg :: 800 mg : X
mcg = 800,000 mcg/500 ml = 1600 mcg/ ml.
Using the formula, prescribed dose (8 mcg/kg/minute) x 60 minute/hour x weight (86 kg)
divided by the concentration of the available drug (1600 mcg/ml) = 8 x 60 x 86 divided by 1600
= 25.8 ml/hour
The healthcare provider prescribes a continuous infusion of dextrose 5% in water with
isoproterenol (Isuprel) 2 mg in 500 ml at a rate of 5 mcg/minute for a client with cardiac
DOSAGE CALCULATIONS EXAM 2025/2026 | 100% VERIFIED
QUESTIONS & STEP-BY-STEP ANSWERS || MEDICATION MATH •
CONVERSIONS • IV CALCULATIONS || BRAND NEW A+ STUDY PACK
|| NURSING MATH MADE EASY
Heparin protocol is prescribed for a client weighing 90 kg. Per protocol, the heparin loading dose
is 60 units/kg IV rounded to the nearest 100 units, with a maximum loading dose of 4,000 units.
The heparin vial is labeled 5,000 units/ml. How many ml should the nurse administer? (Enter the
numeric value only. If rounding is required, round to the nearest tenth.)
false Item 51164 By Sheila Duncan Heparin Protocol:
Heparin loading dose: 60 units/kg IV, rounded to the nearest 100 units, followed by a
maintenance infusion of 12 units/kg/hr, rounded to the nearest 100 units/hr. The maximum bolus
is 4,000 units and the maximum initial infusion is 1000 units/hr.
Determine the client loading dose: 60 units x 90 kg = 5,400 unit.
Per protocol, use the maximum loading dose of 4,000 units, and calculate the client's dose using
the formula D/H x Q = 4,000 units / 5,000 units x 1 ml = 4/5 = 0.8 ml
or Use ratio and proportion: 5,000 : 1 ml :: 4,000 : X
X = 0.8 ml
A child weighing 28.4 kg is in hypertensive crisis. The healthcare provider prescibes methyldopa
(Aldomet) 40 mg/kg/day IV in 4 divided doses. The pharmacy provides a 50 mg/ml injection
vial. How many ml should the nurse administer? (Enter numeric value only. If rounding is
required, round to the nearest tenth.)
First calculate the total mg dose/day: 40 mg x 28.4 kg = 1136 mg/day
Next divide the total mg into the 4 dosages for the day: 1136 mg/4 doses = 284 mg/dose
Using the Desired/Have formula: 284 mg/50mg x 1 ml = 5.68 ml/ dose, rounded to 5.7 ml.
A client with multiple sclerosis and muscle spasms receives a prescription for baclofen
(Kemstro) 30 mg PO daily. The medication is supplied from the pharmacy in 20 mg scored
tablets. How many tablets should the nurse administer? (Enter numeric value only. If rounding is
required, round to the nearest tenth.)
Use ratio and proportion, 30 mg : X tablets = 20 mg : 1 tablet
20X = 30
X = 1.5
A client with dehydration receives a prescription for an IV of Lactated Ringer's 1,000 ml to be
administered over 8 hours. The nurse should program the infusion pump to deliver how many
ml/hour? (Enter numeric value only, using whole number.)
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Use the ratio of: 1000 ml : 8 hours :: X : 1 hour
1000/X :: 8/1
X = 125 ml/hour
The nurse plans to administer labetalol hydrochloride (Trandate) 0.3 grams PO to a client with
hypertension. Trandate is available in 200 mg scored tablets. How many tablets should the nurse
administer? (Enter numeric value only.)
First convert grams to milligrams using the known conversion: 1 gram = 1000 mg.
0.1 gram = 100 mg as 0.3 gram = 300 mg
Next using the formula, Desired/Available x 1 tablet =
300 mg/200 mg x 1 = 1.5 tablets
A 110-pound, adult female is admitted to the Emergency Center after receiving burns to 40
percent of her body. Using the Parkland formula, the client's fluid requirements for the first 24
hours after injury is calculated using Lactated Ringer's 4 ml solution x Body weight (in
kilograms) x Percent burn. The client should receive one-half of the 24-hour calculated fluid
volume in the first 8 hours of treatment. The nurse should set the infusion pump to deliver how
many ml/hour during the first 8 hours? (Enter the numerical value only. If rounding is required,
round to the nearest whole number.)
Using the Parkland formula, the client's fluid requirements for the first 24 hours after injury is
calculated using 4 ml lactated Ringer's solution x Body weight (in kilograms) x Percent burn
Convert 110 pounds to kg = .2 = 50 kg
4 ml x 50 kg x 40 = 8,000 ml
One-half in first 8 hours = 4,000 ml
4,000 ml / 8 hours = 500 = 500 ml/hour
A client who has heart failure with paroxysmal atrial tachycardia is receiving digoxin (Lanoxin)
0.45 mg IV as the inital digitalizing dose. The pharmacy provides 0.25 mg/ml. How many ml
should the nurse administer? (Enter numeric value only. If rounding is required, round to the
nearest tenth.)
Using the formula D/H x Q = 0.45 mg/0.25 mg x 1 mL = 1.8 ml
Mineral oil U.S.P 30 ml PO daily for 3 days is prescribed for a client who is experiencing severe
constipation. The dose cup is marked in tablespoons. How many tablespoons should the nurse
administer? (Enter numeric value only.)
15 ml equals 1 Tablespoon. Use the ratio equation: 15 ml : 1 Tbs :: 30 ml : X
:: 1 / X
15X = 30
X = 2 Tablespoons
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A client is receiving an IV solution of 2 grams of medication diluted in 100 ml of normal saline
over a one hour time period. How many mg of medication is the client receiving per minute?
(Enter numeric value only. If rounding is required, round to the nearest whole number.)
2 grams = 2000 mg
1 hour = 60 minutes
2000 mg/60 minutes = 33.333 mg/minute, rounded to 33 mg/minute
Oxytocin (Pitocin) 4 milliunits/minute IV is prescribed for a client with an ineffective
contraction pattern. To administer the prescribed dosage, the nurse adds 20 units of oxytocin to
Ringer's Lactate 1,000 ml . The infusion pump should be set to deliver how many ml/hour. (Enter
numeric value only.)
4 milliunits/min x 1 unit/1000 milliunits x 1000 ml/20 units x 60 min/hr = 240,000/20,000 = 12
ml/hour
A client who had a small bowel resection two weeks ago is receiving 3/4 strength Ensure
feedings 275 ml every 4 hours via nasogastric tube. Full strength Ensure is available in a 240 ml
can. The nurse should use how many ml of Ensure to prepare the feeding? (Enter numeric value
only. Round to nearest whole number if needed.)
Using the formula Desired % / on Hand % x Volume Desired = 75/100 x 275 = 0.75 x 275 = 206
Ensure
206 ml Ensure + 69 ml water = 275 ml (75% solution)
An adult client with myasthenia gravis is receiving pyridostigmine (Mestinon) 126 mg PO every
4 hours. The drug is available as 60 mg in 5 ml syrup. How many ml should the nurse
administer? (If rounding is required, round to the nearest tenth.)
Using the formula, Desired dose / dose on Hand x Quantity of volume on hand (D/H x Q)
126 mg / 60 mg x 5 ml = 10.5 ml
A client weighing 86 kg is receiving dopamine at 8 mcg/kg/minute. The drug is dispensed as
dopamine 800 mg/500 ml. The nurse should program the infusion pump to deliver how many
ml/hour? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
First, change the concentration of dispensed dopamine to mcg/ml. 1 mg : 1000 mcg :: 800 mg : X
mcg = 800,000 mcg/500 ml = 1600 mcg/ ml.
Using the formula, prescribed dose (8 mcg/kg/minute) x 60 minute/hour x weight (86 kg)
divided by the concentration of the available drug (1600 mcg/ml) = 8 x 60 x 86 divided by 1600
= 25.8 ml/hour
The healthcare provider prescribes a continuous infusion of dextrose 5% in water with
isoproterenol (Isuprel) 2 mg in 500 ml at a rate of 5 mcg/minute for a client with cardiac
