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