HESI Dosage Calculations
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, A client with cardiogenic shock weighs 220 lb and is 11.3
receiving dopamine at the rate of 3 mcg/kg/minute. The
solution strength available is dopamine 400 mg in 250 ml First, convert pounds to kg, 220 lb : X = 2.2 lb : 1 kg = 100 kg. Next, calculate the
of D5W. The nurse should set the infusion pump to deliver dosage per minute, 3 mcg/kg/min x 100 kg = 300 mcg/min. Convert mcg/min to
how many ml/hour? (Enter numeric value only. If rounding mcg/hour, 300 mcg/min x 60 min=18,000 mcg/hour. Convert mcg/hr to mg/hour,
is required, round to the nearest tenth.) 18,000 mcg/hr = 18.0 mg/hour. Calculate the rate, 400 mg : 250 ml = 18 mg : X ml
400X = 4500 X = 11.25 = 11.3 ml. So, 18 mg/11.3 ml should be infused at 11.3
ml/hour.
A client with hypertension who weighs 72.4 kg is receiving 3.5
an infusion of nitroprusside (Nipride) 50 mg in D5W 250 ml
at 75 ml/hour. How many mcg/kg/minute is the client Calculate the mg/hour infusing, 50 mg : 250 ml = X : 75 ml 250X = 3750 and X = 15
receiving? (Enter numeric value only. If rounding is mg/hour. Next, convert mg/hr to mcg/hour, 15 mg/hour = 1 mg / 1000 mcg = 15,000
required, round to the nearest tenth.) mcg/hour, then divide by 60 min = 250 mcg/minute. Lastly, 250 mcg/72.4 kg/min =
3.45 = 3.5 mcg/kg/minute.
A client who weighs 70 kg is receiving a dopamine solution 1.9
of 800 mg/500 ml normal saline at 5 ml/hour. How many
mcg/kg/minute is the client receiving? (Enter numeric value To change ml/hour to mcg/kg/minute, use the formula: desired rate (5 ml/hour) /
only. If rounding is required, round to the nearest tenth.) volume available (500 ml) x dose available (800 mg) = 8 mg/hour. Next, convert
milligrams/hour to mcg/kg/minute: mg (8) x 1000 / kg (70) / 60 minutes = 1.904 =
1.9 mcg/kg/minute.
A client is receiving an IV solution of sodium chloride 0.9% Convert grams to mg, 1 gram equals 1,000 mg. Using ratio and proportion - 1,000
(Normal Saline) 250 ml with amiodarone (Cordarone) 1 mg : 250 ml :: X mg : 1ml 250X= 1,000 so X = 4 mg/ml is the solution concentration
gram at 17 ml/hour. How many mg/minute of amiodarone of amiodarone. The infusion rate (ml/hour) x concentration (mg/ml) divided by 60
is infusing? (Enter numeric value only. If rounding is minutes/hour 17 ml/hour x 4 mg/ml = 68/60 = 1.13 = 1.1 mg/minute.
required, round to the nearest tenth.)
A client who weighs 176 pounds is receiving an IV infusion 100
with esmolol hydrochloride (Brevibloc) at 48 ml/hour. The
IV solution is labeled with the concentration of Brevibloc 10 Convert pounds to kg by dividing 176 pounds by 2.2 pounds = 80 kg. Convert the IV
mg/ml. How many mcg/kg/minute is the client receiving? concentration from mg to mcg. 1 mg : 1000 mcg :: 10 mg : 10,000 mcg. Infusion
(Enter numeric value only.) rate (48 ml/hour) x concentration (10,000 mcg/ml) divided by 60 minutes/hour x 80
kg = 48 x 10,000 divided by 60 x 80 = 480, = 100 mcg/kg/minute.
The nurse is preparing the change-of-shift report for a 95
client who has a 265 ml secondary infusion that was
started 2 hours ago at a rate of 85 ml/hour via an infusion 85 ml x 2 hours = 170 ml has infused. 265 ml (total amount to be infused) - 170 ml
pump. The nurse should report that how many ml remain (amount infused) = 95 ml remain to be infused.
to be infused by the on-coming nurse? (Enter numeric
value only.)
A male client receives a prescription for ondansetron 2
hydrochloride (Zofran) 4 mg IV to prevent postoperative
nausea after an inguinal hernia repair. The medication is Use ratio and proportion, 4 mg : X ml = 2 mg : 1 ml 2X = 4 X = 2
available in 2 mg/ml. How many ml should the nurse
administer? (Enter numeric value only.)
The nurse is preparing to administer Hepatitis B Vaccine, 1 or 0.5
Recombinant (Energix-B) 5 mcg IM to a school-aged child.
The vaccine is labeled, 10 mcg/ml. How many ml should Use ratio and proportion, 5 mcg : X ml :: 10 mcg : 1ml
the nurse administer? (Enter numeric value only. If 10X = 5 X = 0.5 ml
rounding is required, round to the nearest tenth).
A client's daily PO prescription for aripiprazole (Abilify) is 1
increased from 15 mg to 30 mg. The medication is
available in 15 mg tablets, and the client already received 30 mg (total dose) - 15 mg (dose already administered) = 15 mg that still needs to
one tablet today. How many additional tablets should the be administered. Using the Desired/Have formula: 15 mg/15 mg = 1 tablet
nurse administer so the client receives the total newly
prescribed dose for the day? (Enter numeric value only.)
Practice Questions |
Nursing Study Guide with
Answers and Rationales |
Graded A+ | Guaranteed
Success
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive Rationales
Included
, A client with cardiogenic shock weighs 220 lb and is 11.3
receiving dopamine at the rate of 3 mcg/kg/minute. The
solution strength available is dopamine 400 mg in 250 ml First, convert pounds to kg, 220 lb : X = 2.2 lb : 1 kg = 100 kg. Next, calculate the
of D5W. The nurse should set the infusion pump to deliver dosage per minute, 3 mcg/kg/min x 100 kg = 300 mcg/min. Convert mcg/min to
how many ml/hour? (Enter numeric value only. If rounding mcg/hour, 300 mcg/min x 60 min=18,000 mcg/hour. Convert mcg/hr to mg/hour,
is required, round to the nearest tenth.) 18,000 mcg/hr = 18.0 mg/hour. Calculate the rate, 400 mg : 250 ml = 18 mg : X ml
400X = 4500 X = 11.25 = 11.3 ml. So, 18 mg/11.3 ml should be infused at 11.3
ml/hour.
A client with hypertension who weighs 72.4 kg is receiving 3.5
an infusion of nitroprusside (Nipride) 50 mg in D5W 250 ml
at 75 ml/hour. How many mcg/kg/minute is the client Calculate the mg/hour infusing, 50 mg : 250 ml = X : 75 ml 250X = 3750 and X = 15
receiving? (Enter numeric value only. If rounding is mg/hour. Next, convert mg/hr to mcg/hour, 15 mg/hour = 1 mg / 1000 mcg = 15,000
required, round to the nearest tenth.) mcg/hour, then divide by 60 min = 250 mcg/minute. Lastly, 250 mcg/72.4 kg/min =
3.45 = 3.5 mcg/kg/minute.
A client who weighs 70 kg is receiving a dopamine solution 1.9
of 800 mg/500 ml normal saline at 5 ml/hour. How many
mcg/kg/minute is the client receiving? (Enter numeric value To change ml/hour to mcg/kg/minute, use the formula: desired rate (5 ml/hour) /
only. If rounding is required, round to the nearest tenth.) volume available (500 ml) x dose available (800 mg) = 8 mg/hour. Next, convert
milligrams/hour to mcg/kg/minute: mg (8) x 1000 / kg (70) / 60 minutes = 1.904 =
1.9 mcg/kg/minute.
A client is receiving an IV solution of sodium chloride 0.9% Convert grams to mg, 1 gram equals 1,000 mg. Using ratio and proportion - 1,000
(Normal Saline) 250 ml with amiodarone (Cordarone) 1 mg : 250 ml :: X mg : 1ml 250X= 1,000 so X = 4 mg/ml is the solution concentration
gram at 17 ml/hour. How many mg/minute of amiodarone of amiodarone. The infusion rate (ml/hour) x concentration (mg/ml) divided by 60
is infusing? (Enter numeric value only. If rounding is minutes/hour 17 ml/hour x 4 mg/ml = 68/60 = 1.13 = 1.1 mg/minute.
required, round to the nearest tenth.)
A client who weighs 176 pounds is receiving an IV infusion 100
with esmolol hydrochloride (Brevibloc) at 48 ml/hour. The
IV solution is labeled with the concentration of Brevibloc 10 Convert pounds to kg by dividing 176 pounds by 2.2 pounds = 80 kg. Convert the IV
mg/ml. How many mcg/kg/minute is the client receiving? concentration from mg to mcg. 1 mg : 1000 mcg :: 10 mg : 10,000 mcg. Infusion
(Enter numeric value only.) rate (48 ml/hour) x concentration (10,000 mcg/ml) divided by 60 minutes/hour x 80
kg = 48 x 10,000 divided by 60 x 80 = 480, = 100 mcg/kg/minute.
The nurse is preparing the change-of-shift report for a 95
client who has a 265 ml secondary infusion that was
started 2 hours ago at a rate of 85 ml/hour via an infusion 85 ml x 2 hours = 170 ml has infused. 265 ml (total amount to be infused) - 170 ml
pump. The nurse should report that how many ml remain (amount infused) = 95 ml remain to be infused.
to be infused by the on-coming nurse? (Enter numeric
value only.)
A male client receives a prescription for ondansetron 2
hydrochloride (Zofran) 4 mg IV to prevent postoperative
nausea after an inguinal hernia repair. The medication is Use ratio and proportion, 4 mg : X ml = 2 mg : 1 ml 2X = 4 X = 2
available in 2 mg/ml. How many ml should the nurse
administer? (Enter numeric value only.)
The nurse is preparing to administer Hepatitis B Vaccine, 1 or 0.5
Recombinant (Energix-B) 5 mcg IM to a school-aged child.
The vaccine is labeled, 10 mcg/ml. How many ml should Use ratio and proportion, 5 mcg : X ml :: 10 mcg : 1ml
the nurse administer? (Enter numeric value only. If 10X = 5 X = 0.5 ml
rounding is required, round to the nearest tenth).
A client's daily PO prescription for aripiprazole (Abilify) is 1
increased from 15 mg to 30 mg. The medication is
available in 15 mg tablets, and the client already received 30 mg (total dose) - 15 mg (dose already administered) = 15 mg that still needs to
one tablet today. How many additional tablets should the be administered. Using the Desired/Have formula: 15 mg/15 mg = 1 tablet
nurse administer so the client receives the total newly
prescribed dose for the day? (Enter numeric value only.)
