HESI Dosage Calculations Practice Exam
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A client with cardiogenic shock 11.3
weighs 220 lb and is receiving
dopamine at the rate of 3 First, convert pounds to kg, 220 lb : X = 2.2 lb : 1 kg
mcg/kg/minute. The solution = 100 kg. Next, calculate the dosage per minute, 3
strength available is dopamine 400 mcg/kg/min x 100 kg = 300 mcg/min. Convert
mg in 250 ml of D5W. The nurse mcg/min to mcg/hour, 300 mcg/min x 60
should set the infusion pump to min=18,000 mcg/hour. Convert mcg/hr to mg/hour,
deliver how many ml/hour? (Enter 18,000 mcg/hr = 18.0 mg/hour. Calculate the rate,
numeric value only. If rounding is 400 mg : 250 ml = 18 mg : X ml 400X = 4500 X = 11.25
required, round to the nearest tenth.) = 11.3 ml. So, 18 mg/11.3 ml should be infused at 11.3
ml/hour.
A client with hypertension who 3.5
weighs 72.4 kg is receiving an
infusion of nitroprusside (Nipride) 50 Calculate the mg/hour infusing, 50 mg : 250 ml = X :
mg in D5W 250 ml at 75 ml/hour. 75 ml 250X = 3750 and X = 15 mg/hour. Next,
How many mcg/kg/minute is the convert mg/hr to mcg/hour, 15 mg/hour = 1 mg /
client receiving? (Enter numeric 1000 mcg = 15,000 mcg/hour, then divide by 60 min
value only. If rounding is required, = 250 mcg/minute. Lastly, 250 mcg/72.4 kg/min =
round to the nearest tenth.) 3.45 = 3.5 mcg/kg/minute.
,A client who weighs 70 kg is 1.9
receiving a dopamine solution of
800 mg/500 ml normal saline at 5 To change ml/hour to mcg/kg/minute, use the
ml/hour. How many mcg/kg/minute formula: desired rate (5 ml/hour) / volume available
is the client receiving? (Enter (500 ml) x dose available (800 mg) = 8 mg/hour.
numeric value only. If rounding is Next, convert milligrams/hour to mcg/kg/minute:
required, round to the nearest tenth.) mg (8) x 1000 / kg (70) / 60 minutes = 1.904 = 1.9
mcg/kg/minute.
A client is receiving an IV solution of Convert grams to mg, 1 gram equals 1,000 mg.
sodium chloride 0.9% (Normal Using ratio and proportion - 1,000 mg : 250 ml :: X
Saline) 250 ml with amiodarone mg : 1ml 250X= 1,000 so X = 4 mg/ml is the solution
(Cordarone) 1 gram at 17 ml/hour. concentration of amiodarone. The infusion rate
How many mg/minute of (ml/hour) x concentration (mg/ml) divided by 60
amiodarone is infusing? (Enter minutes/hour 17 ml/hour x 4 mg/ml = 68/60 = 1.13 =
numeric value only. If rounding is 1.1 mg/minute.
required, round to the nearest tenth.)
A client who weighs 176 pounds is 100
receiving an IV infusion with esmolol
hydrochloride (Brevibloc) at 48 Convert pounds to kg by dividing 176 pounds by
ml/hour. The IV solution is labeled 2.2 pounds = 80 kg. Convert the IV concentration
with the concentration of Brevibloc from mg to mcg. 1 mg : 1000 mcg :: 10 mg : 10,000
10 mg/ml. How many mcg/kg/minute mcg. Infusion rate (48 ml/hour) x concentration
is the client receiving? (Enter (10,000 mcg/ml) divided by 60 minutes/hour x 80
numeric value only.) kg = 48 x 10,000 divided by 60 x 80 = 480,000 /
4800 = 100 mcg/kg/minute.
, The nurse is preparing the change- 95
of-shift report for a client who has a
265 ml secondary infusion that was 85 ml x 2 hours = 170 ml has infused. 265 ml (total
started 2 hours ago at a rate of 85 amount to be infused) - 170 ml (amount infused) =
ml/hour via an infusion pump. The 95 ml remain to be infused.
nurse should report that how many
ml remain to be infused by the on-
coming nurse? (Enter numeric value
only.)
A male client receives a prescription 2
for ondansetron hydrochloride
(Zofran) 4 mg IV to prevent Use ratio and proportion, 4 mg : X ml = 2 mg : 1 ml
postoperative nausea after an 2X = 4 X = 2
inguinal hernia repair. The medication
is available in 2 mg/ml. How many ml
should the nurse administer? (Enter
numeric value only.)
The nurse is preparing to administer 1 or 0.5
Hepatitis B Vaccine, Recombinant
(Energix-B) 5 mcg IM to a school- Use ratio and proportion, 5 mcg : X ml :: 10 mcg :
aged child. The vaccine is labeled, 10 1ml
mcg/ml. How many ml should the 10X = 5 X = 0.5 ml
nurse administer? (Enter numeric
value only. If rounding is required,
round to the nearest tenth).
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A client with cardiogenic shock 11.3
weighs 220 lb and is receiving
dopamine at the rate of 3 First, convert pounds to kg, 220 lb : X = 2.2 lb : 1 kg
mcg/kg/minute. The solution = 100 kg. Next, calculate the dosage per minute, 3
strength available is dopamine 400 mcg/kg/min x 100 kg = 300 mcg/min. Convert
mg in 250 ml of D5W. The nurse mcg/min to mcg/hour, 300 mcg/min x 60
should set the infusion pump to min=18,000 mcg/hour. Convert mcg/hr to mg/hour,
deliver how many ml/hour? (Enter 18,000 mcg/hr = 18.0 mg/hour. Calculate the rate,
numeric value only. If rounding is 400 mg : 250 ml = 18 mg : X ml 400X = 4500 X = 11.25
required, round to the nearest tenth.) = 11.3 ml. So, 18 mg/11.3 ml should be infused at 11.3
ml/hour.
A client with hypertension who 3.5
weighs 72.4 kg is receiving an
infusion of nitroprusside (Nipride) 50 Calculate the mg/hour infusing, 50 mg : 250 ml = X :
mg in D5W 250 ml at 75 ml/hour. 75 ml 250X = 3750 and X = 15 mg/hour. Next,
How many mcg/kg/minute is the convert mg/hr to mcg/hour, 15 mg/hour = 1 mg /
client receiving? (Enter numeric 1000 mcg = 15,000 mcg/hour, then divide by 60 min
value only. If rounding is required, = 250 mcg/minute. Lastly, 250 mcg/72.4 kg/min =
round to the nearest tenth.) 3.45 = 3.5 mcg/kg/minute.
,A client who weighs 70 kg is 1.9
receiving a dopamine solution of
800 mg/500 ml normal saline at 5 To change ml/hour to mcg/kg/minute, use the
ml/hour. How many mcg/kg/minute formula: desired rate (5 ml/hour) / volume available
is the client receiving? (Enter (500 ml) x dose available (800 mg) = 8 mg/hour.
numeric value only. If rounding is Next, convert milligrams/hour to mcg/kg/minute:
required, round to the nearest tenth.) mg (8) x 1000 / kg (70) / 60 minutes = 1.904 = 1.9
mcg/kg/minute.
A client is receiving an IV solution of Convert grams to mg, 1 gram equals 1,000 mg.
sodium chloride 0.9% (Normal Using ratio and proportion - 1,000 mg : 250 ml :: X
Saline) 250 ml with amiodarone mg : 1ml 250X= 1,000 so X = 4 mg/ml is the solution
(Cordarone) 1 gram at 17 ml/hour. concentration of amiodarone. The infusion rate
How many mg/minute of (ml/hour) x concentration (mg/ml) divided by 60
amiodarone is infusing? (Enter minutes/hour 17 ml/hour x 4 mg/ml = 68/60 = 1.13 =
numeric value only. If rounding is 1.1 mg/minute.
required, round to the nearest tenth.)
A client who weighs 176 pounds is 100
receiving an IV infusion with esmolol
hydrochloride (Brevibloc) at 48 Convert pounds to kg by dividing 176 pounds by
ml/hour. The IV solution is labeled 2.2 pounds = 80 kg. Convert the IV concentration
with the concentration of Brevibloc from mg to mcg. 1 mg : 1000 mcg :: 10 mg : 10,000
10 mg/ml. How many mcg/kg/minute mcg. Infusion rate (48 ml/hour) x concentration
is the client receiving? (Enter (10,000 mcg/ml) divided by 60 minutes/hour x 80
numeric value only.) kg = 48 x 10,000 divided by 60 x 80 = 480,000 /
4800 = 100 mcg/kg/minute.
, The nurse is preparing the change- 95
of-shift report for a client who has a
265 ml secondary infusion that was 85 ml x 2 hours = 170 ml has infused. 265 ml (total
started 2 hours ago at a rate of 85 amount to be infused) - 170 ml (amount infused) =
ml/hour via an infusion pump. The 95 ml remain to be infused.
nurse should report that how many
ml remain to be infused by the on-
coming nurse? (Enter numeric value
only.)
A male client receives a prescription 2
for ondansetron hydrochloride
(Zofran) 4 mg IV to prevent Use ratio and proportion, 4 mg : X ml = 2 mg : 1 ml
postoperative nausea after an 2X = 4 X = 2
inguinal hernia repair. The medication
is available in 2 mg/ml. How many ml
should the nurse administer? (Enter
numeric value only.)
The nurse is preparing to administer 1 or 0.5
Hepatitis B Vaccine, Recombinant
(Energix-B) 5 mcg IM to a school- Use ratio and proportion, 5 mcg : X ml :: 10 mcg :
aged child. The vaccine is labeled, 10 1ml
mcg/ml. How many ml should the 10X = 5 X = 0.5 ml
nurse administer? (Enter numeric
value only. If rounding is required,
round to the nearest tenth).
