Pharmacology HESI Review Exam Questions and Answers 100% Solved
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Course
Pharmacology HESI
Institution
Pharmacology HESI
Pharmacology HESI Review Exam
Questions and Answers 100% Solved
The healthcare provider prescribes an intermittent infusion of nafcillin
(Unipen) 800 mg IV for a pediatric client. The drug is dispensed in a
concentration of 250 mg/ml, and the recommended infusion concentration
is 40 mg/ml. Whe...
The healthcare provider prescribes an intermittent infusion of nafcillin
(Unipen) 800 mg IV for a pediatric client. The drug is dispensed in a
concentration of 250 mg/ml, and the recommended infusion concentration
is 40 mg/ml. When adding the prescribed dose to the volume control
device, how many ml of IV solution should the nurse add to dilute? (Enter
numeric value only. If rounding is required, round to the nearest tenth.) -
✔✔First, calculate the amount of milliliters of medication needed to provide
800 mg of nafcillin.
Prescribed dose (800 mg) divided by dose on hand (250 mg/ml) equals 3.2
ml
Next, determine the recommended concentration using equivalent
fractions.
800 mg/X = 40 mg/1 ml40X = 800 = 20 ml (the total volume at the
recommended concentration)20 ml (total volume) minus the 3.2 ml (800 mg
dose) equals an additional 16.8 ml of fluid to be added to the volume
control device to obtain the recommended concentration.
, 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
A client who has preeclampsia receives a prescription for an IV infusion of
0.9% normal saline with magnesium sulfate 4 gram/250 ml to be infused at
a rate of 125 ml/hour. The nurse should administer how many mg/hour of
magnesium sulfate? (Enter numeric value only. If rounding is required,
round to the nearest whole number.) - ✔✔To calculate the amount of
medication being delivered each hour:
First convert grams to mg:
1 gram = 1000 mg :: 4 grams = 4000 mg
Next calculate number of mg delivered/hour4000 mg : 250 ml :: X mg : 125
ml4000/X :: 250/12550000= 250XX = 2000 mg/hour
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