HESI Dosage Calculations Practice Exam, Hesi Pharmacology Review
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1. A client with cardiogenic shock weighs 220 lb 11.3
and is receiving dopamine at the rate of 3
mcg/kg/minute. The solution strength available is First, convert pounds to kg, 220
dopamine 400 mg in 250 ml of D5W. The nurse lb : X = 2.2 lb : 1 kg = 100 kg.
should set the infusion pump to deliver how many Next, calculate the dosage per
ml/hour? (Enter numeric value only. If rounding is minute, 3 mcg/kg/min x 100 kg =
required, round to the nearest tenth.) 300 mcg/min. Convert mcg/min
to mcg/hour, 300 mcg/min x
60 min=18,000 mcg/hour. Con-
vert mcg/hr to mg/hour, 18,000
mcg/hr = 18.0 mg/hour. Calcu-
late 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.
2. A client with hypertension who weighs 72.4 kg 3.5
is receiving an infusion of nitroprusside (Nipride)
50 mg in D5W 250 ml at 75 ml/hour. How many Calculate the mg/hour infusing,
mcg/kg/minute is the client receiving? (Enter nu- 50 mg : 250 ml = X : 75 ml 250X =
meric value only. If rounding is required, round to 3750 and X = 15 mg/hour. Next,
the nearest tenth.) convert mg/hr to mcg/hour, 15
mg/hour = 1 mg / 1000 mcg =
15,000 mcg/hour, then divide by
60 min = 250 mcg/minute. Lastly,
250 mcg/72.4 kg/min = 3.45 =
3.5 mcg/kg/minute.
3. A client who weighs 70 kg is receiving a dopamine 1.9
solution of 800 mg/500 ml normal saline at 5
ml/hour. How many mcg/kg/minute is the client To change ml/hour to
, HESI Dosage Calculations Practice Exam, Hesi Pharmacology Review
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receiving? (Enter numeric value only. If rounding mcg/kg/minute, use the formu-
is required, round to the nearest tenth.) la: desired rate (5 ml/hour) / vol-
ume 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.
4. A client is receiving an IV solution of sodium chlo- Convert grams to mg, 1 gram
ride 0.9% (Normal Saline) 250 ml with amiodarone equals 1,000 mg. Using ratio and
(Cordarone) 1 gram at 17 ml/hour. How many proportion - 1,000 mg : 250 ml
mg/minute of amiodarone is infusing? (Enter nu- :: X mg : 1ml 250X= 1,000 so X =
meric value only. If rounding is required, round to 4 mg/ml is the solution concen-
the nearest tenth.) tration of amiodarone. The infu-
sion rate (ml/hour) x concentra-
tion (mg/ml) divided by 60 min-
utes/hour 17 ml/hour x 4 mg/ml
= 68/60 = 1.13 = 1.1 mg/minute.
5. A client who weighs 176 pounds is receiving an 100
IV infusion with esmolol hydrochloride (Brevibloc)
at 48 ml/hour. The IV solution is labeled with the Convert pounds to kg by dividing
concentration of Brevibloc 10 mg/ml. How many 176 pounds by 2.2 pounds = 80
mcg/kg/minute is the client receiving? (Enter nu- kg. Convert the IV concentration
meric value only.) from mg to mcg. 1 mg : 1000
mcg :: 10 mg : 10,000 mcg. In-
fusion rate (48 ml/hour) x con-
centration (10,000 mcg/ml) di-
vided by 60 minutes/hour x 80
kg = 48 x 10,000 divided by 60
, HESI Dosage Calculations Practice Exam, Hesi Pharmacology Review
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x 80 = 480, = 100
mcg/kg/minute.
6. The nurse is preparing the change-of-shift report 95
for a client who has a 265 ml secondary infu-
sion that was started 2 hours ago at a rate of 85 85 ml x 2 hours = 170 ml has
ml/hour via an infusion pump. The nurse should infused. 265 ml (total amount to
report that how many ml remain to be infused by be infused) - 170 ml (amount
the on-coming nurse? (Enter numeric value only.) infused) = 95 ml remain to be
infused.
7. A male client receives a prescription for on- 2
dansetron hydrochloride (Zofran) 4 mg IV to pre-
vent postoperative nausea after an inguinal her- Use ratio and proportion, 4 mg :
nia repair. The medication is available in 2 mg/ml. X ml = 2 mg : 1 ml 2X = 4 X = 2
How many ml should the nurse administer? (Enter
numeric value only.)
8. The nurse is preparing to administer Hepatitis 1 or 0.5
B Vaccine, Recombinant (Energix-B) 5 mcg IM to
a school-aged child. The vaccine is labeled, 10 Use ratio and proportion, 5 mcg
mcg/ml. How many ml should the nurse admin- : X ml :: 10 mcg : 1ml
ister? (Enter numeric value only. If rounding is 10X = 5 X = 0.5 ml
required, round to the nearest tenth).
9. A client's daily PO prescription for aripiprazole 1
(Abilify) is increased from 15 mg to 30 mg. The
medication is available in 15 mg tablets, and 30 mg (total dose) - 15 mg (dose
the client already received one tablet today. How already administered) = 15 mg
many additional tablets should the nurse admin- that still needs to be adminis-
ister so the client receives the total newly pre- tered. Using the Desired/Have
scribed dose for the day? (Enter numeric value formula: 15 mg/15 mg = 1 tablet
only.)
, HESI Dosage Calculations Practice Exam, Hesi Pharmacology Review
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10. At the end of the shift, the nurse is recording 695
the fluid balance for a client receiving a continu-
ous gastrostomy tube (GT) feeding. Based on the The tube feeding is administered
client's records, how many ml should the nurse at 75 ml/hour for 11 hours (0700
record for the total fluid balance (intake - output) - 1800) and then turned off for
for the shift that started at 0700 and ended at one hour because the residual is
1900? (Enter numeric value only.) (Click on each greater than 200 ml. 11 hours x
image asset for additional information.) 75 ml/hr = 825 ml. Three doses
of 20 ml of medication are ad-
ministered, with 10 ml of water
used to flush the GT before and
after each dose. 20 ml x 3 doses =
60 ml; 10 ml (flush) x 2 x 3 doses
= 60 ml; so 825 ml + 60 ml + 60
ml = 945 ml. 250 ml of residual is
removed and not replaced. 945
ml - 250 ml = 695 ml total fluid
balance (Intake - output).
11. The nurse is administering a 250 milliliter (ml) 125
intravenous solution to be infused over 2 hours.
How many ml/hour should the nurse program the 250 ml : 2 hours = X ml : 1 hour
infusion pump? (Enter numeric value only.) 250 = 2X X = 250 divided by 2 =
125 ml/hr
12. The nurse is preparing to administer 0.25 mg of 1
bumetanide (Bumex) IV. The medication is avail-
able in a vial labeled 1 mg/4 ml. How many ml of Using the Desired/Have x Vol-
medication should the nurse administer? (Enter ume formula: Desired = 0.25 mg
numeric value only.) Have = 1 mg Volume = 4 ml 0.25
mg/1 mg x 4 ml = 1 ml
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1. A client with cardiogenic shock weighs 220 lb 11.3
and is receiving dopamine at the rate of 3
mcg/kg/minute. The solution strength available is First, convert pounds to kg, 220
dopamine 400 mg in 250 ml of D5W. The nurse lb : X = 2.2 lb : 1 kg = 100 kg.
should set the infusion pump to deliver how many Next, calculate the dosage per
ml/hour? (Enter numeric value only. If rounding is minute, 3 mcg/kg/min x 100 kg =
required, round to the nearest tenth.) 300 mcg/min. Convert mcg/min
to mcg/hour, 300 mcg/min x
60 min=18,000 mcg/hour. Con-
vert mcg/hr to mg/hour, 18,000
mcg/hr = 18.0 mg/hour. Calcu-
late 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.
2. A client with hypertension who weighs 72.4 kg 3.5
is receiving an infusion of nitroprusside (Nipride)
50 mg in D5W 250 ml at 75 ml/hour. How many Calculate the mg/hour infusing,
mcg/kg/minute is the client receiving? (Enter nu- 50 mg : 250 ml = X : 75 ml 250X =
meric value only. If rounding is required, round to 3750 and X = 15 mg/hour. Next,
the nearest tenth.) convert mg/hr to mcg/hour, 15
mg/hour = 1 mg / 1000 mcg =
15,000 mcg/hour, then divide by
60 min = 250 mcg/minute. Lastly,
250 mcg/72.4 kg/min = 3.45 =
3.5 mcg/kg/minute.
3. A client who weighs 70 kg is receiving a dopamine 1.9
solution of 800 mg/500 ml normal saline at 5
ml/hour. How many mcg/kg/minute is the client To change ml/hour to
, HESI Dosage Calculations Practice Exam, Hesi Pharmacology Review
Study online at https://quizlet.com/_bm7dz8
receiving? (Enter numeric value only. If rounding mcg/kg/minute, use the formu-
is required, round to the nearest tenth.) la: desired rate (5 ml/hour) / vol-
ume 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.
4. A client is receiving an IV solution of sodium chlo- Convert grams to mg, 1 gram
ride 0.9% (Normal Saline) 250 ml with amiodarone equals 1,000 mg. Using ratio and
(Cordarone) 1 gram at 17 ml/hour. How many proportion - 1,000 mg : 250 ml
mg/minute of amiodarone is infusing? (Enter nu- :: X mg : 1ml 250X= 1,000 so X =
meric value only. If rounding is required, round to 4 mg/ml is the solution concen-
the nearest tenth.) tration of amiodarone. The infu-
sion rate (ml/hour) x concentra-
tion (mg/ml) divided by 60 min-
utes/hour 17 ml/hour x 4 mg/ml
= 68/60 = 1.13 = 1.1 mg/minute.
5. A client who weighs 176 pounds is receiving an 100
IV infusion with esmolol hydrochloride (Brevibloc)
at 48 ml/hour. The IV solution is labeled with the Convert pounds to kg by dividing
concentration of Brevibloc 10 mg/ml. How many 176 pounds by 2.2 pounds = 80
mcg/kg/minute is the client receiving? (Enter nu- kg. Convert the IV concentration
meric value only.) from mg to mcg. 1 mg : 1000
mcg :: 10 mg : 10,000 mcg. In-
fusion rate (48 ml/hour) x con-
centration (10,000 mcg/ml) di-
vided by 60 minutes/hour x 80
kg = 48 x 10,000 divided by 60
, HESI Dosage Calculations Practice Exam, Hesi Pharmacology Review
Study online at https://quizlet.com/_bm7dz8
x 80 = 480, = 100
mcg/kg/minute.
6. The nurse is preparing the change-of-shift report 95
for a client who has a 265 ml secondary infu-
sion that was started 2 hours ago at a rate of 85 85 ml x 2 hours = 170 ml has
ml/hour via an infusion pump. The nurse should infused. 265 ml (total amount to
report that how many ml remain to be infused by be infused) - 170 ml (amount
the on-coming nurse? (Enter numeric value only.) infused) = 95 ml remain to be
infused.
7. A male client receives a prescription for on- 2
dansetron hydrochloride (Zofran) 4 mg IV to pre-
vent postoperative nausea after an inguinal her- Use ratio and proportion, 4 mg :
nia repair. The medication is available in 2 mg/ml. X ml = 2 mg : 1 ml 2X = 4 X = 2
How many ml should the nurse administer? (Enter
numeric value only.)
8. The nurse is preparing to administer Hepatitis 1 or 0.5
B Vaccine, Recombinant (Energix-B) 5 mcg IM to
a school-aged child. The vaccine is labeled, 10 Use ratio and proportion, 5 mcg
mcg/ml. How many ml should the nurse admin- : X ml :: 10 mcg : 1ml
ister? (Enter numeric value only. If rounding is 10X = 5 X = 0.5 ml
required, round to the nearest tenth).
9. A client's daily PO prescription for aripiprazole 1
(Abilify) is increased from 15 mg to 30 mg. The
medication is available in 15 mg tablets, and 30 mg (total dose) - 15 mg (dose
the client already received one tablet today. How already administered) = 15 mg
many additional tablets should the nurse admin- that still needs to be adminis-
ister so the client receives the total newly pre- tered. Using the Desired/Have
scribed dose for the day? (Enter numeric value formula: 15 mg/15 mg = 1 tablet
only.)
, HESI Dosage Calculations Practice Exam, Hesi Pharmacology Review
Study online at https://quizlet.com/_bm7dz8
10. At the end of the shift, the nurse is recording 695
the fluid balance for a client receiving a continu-
ous gastrostomy tube (GT) feeding. Based on the The tube feeding is administered
client's records, how many ml should the nurse at 75 ml/hour for 11 hours (0700
record for the total fluid balance (intake - output) - 1800) and then turned off for
for the shift that started at 0700 and ended at one hour because the residual is
1900? (Enter numeric value only.) (Click on each greater than 200 ml. 11 hours x
image asset for additional information.) 75 ml/hr = 825 ml. Three doses
of 20 ml of medication are ad-
ministered, with 10 ml of water
used to flush the GT before and
after each dose. 20 ml x 3 doses =
60 ml; 10 ml (flush) x 2 x 3 doses
= 60 ml; so 825 ml + 60 ml + 60
ml = 945 ml. 250 ml of residual is
removed and not replaced. 945
ml - 250 ml = 695 ml total fluid
balance (Intake - output).
11. The nurse is administering a 250 milliliter (ml) 125
intravenous solution to be infused over 2 hours.
How many ml/hour should the nurse program the 250 ml : 2 hours = X ml : 1 hour
infusion pump? (Enter numeric value only.) 250 = 2X X = 250 divided by 2 =
125 ml/hr
12. The nurse is preparing to administer 0.25 mg of 1
bumetanide (Bumex) IV. The medication is avail-
able in a vial labeled 1 mg/4 ml. How many ml of Using the Desired/Have x Vol-
medication should the nurse administer? (Enter ume formula: Desired = 0.25 mg
numeric value only.) Have = 1 mg Volume = 4 ml 0.25
mg/1 mg x 4 ml = 1 ml
