4_MAT 165 Assignment Solution and Parenteral Doses_finalV2 2
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Concordia University Saint Paul *
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Course
165
Subject
Mathematics
Date
Jan 9, 2024
Type
Pages
4
Uploaded by mrsschi
MAT165 Assignment: Solution and Parenteral Doses
Directions
Complete the following problems.
You may use a calculator, but show your work. Clearly answer all
questions and include unit labels in your final answers.
1. Two liters of a solution contain 60 grams of a pure drug. Express the strength of this solution both as a
ratio and as a percentage.
2. The label for Gastrocrom (cromolyn sodium) gives the strength 100 mg/ 5 mL.
How many milligrams
of cromolyn sodium are contained in 4 mL of this solution?
3. An IV bag contains 250 mL of a 5% mannitol solution.
How many grams of mannitol are in the IV bag?
4. How would you prepare 15 ounces of 1/3 strength Ensure from full-strength Ensure using water as
the diluent?
Write the steps you would follow in order for the preparation.
Hint:
Ensure is a liquid.
5.
How would you prepare 200 mL of a 3/4 strength hydrogen peroxide solution for a wound irrigation
using normal saline as the diluent, if you have full-strength hydrogen peroxide available?
Write the
steps you would follow in order for the preparation.
6. The order is for 2000 mg of a drug IV daily.
The safe dose range for the drug is 15 to 18 mg/kg/d.
Is
this dosage safe for a patient who weighs 175 pounds?
Show your calculations to justify your answer.
7. The order is
Rocephin (ceftriaxone) 1g IM daily.
The package insert says to add 4.2 mL of diluent to
the 2-g vial and that after reconstitution the strength will be 350 mg/mL.
How many milliliters will you
administer?
Round to the nearest tenth of a mL.
8. The prescriber ordered
morphine sulfate 5 mg IM q6h prn.
The label on the 20-mL vial reads 10
mg/mL.
What is the maximum number of milliliters that the patient can receive over a 24-hour period?
9. The label on the vial of a drug reads
5 mg/2 mL.
The safe dose for this medication is 0.075 to 0.15
mL/kg/d, and the prescriber orders 20 mg IV daily.
The patient weighs 176 lb.
a)
Is the ordered dose within the safe dose range?
Show calculations to justify your answer.
b)
How many milliliters would you prepare for this patient?
10. The strength of a certain drug is 500 mcg/mL.
The patient weighs 59 kg.
The order indicates the
patient is to receive
20 mcg/kg of this drug IM daily.
How many milliliters would you administer?
Round to the nearest tenth of a milliliter
11. The prescriber ordered
Stelazine (trifluoperazine) 1.4 mg IM (give deep IM) q6h prn.
The label on the
10 ML multidose vial reads 2 mg/mL injection
a)
Calculate the number of milliliters of this antipsychotic drug that contain this dose.
b)
Mark the dose on the appropriate syringe.
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12. Use the insulin “sliding scale” below to determine how much insulin you will give to a patient whose
blood glucose is 320.
Order:
Give Humulin R Unit-100 insulin subcutaneously for blood glucose levels as
follows:
Glucose less than 160
–
no insulin
Glucose 160-220
–
2 units
Glucose 221-280
–
4 units
Glucose 281-340
–
6 units
Glucose 341-400
–
8 units
Glucose more than 400
–
hold insulin and call MD stat
13. Show on the syringe what you would give for the answer shown in question 12.
14. Describe in 4 sentences why it is important to calculate pediatric dosages differently from adult
dosages. Describe why weight is a factor in pediatric dosages?