Drug and Dosage Calculaitons Practice IV
Completion
Complete each statement.
1. Directions: Use the label to identify the information requested. If more than one answer is
necessary, separate your answers with commas.
.
a. Trade name: _______________
b. Generic name: _______________
c. Dosage strength: _______________
d. Form: _______________
e. Total amount in container: _______________
2. Directions: Use the label to identify the information requested. If more than one answer is
necessary, separate your answers with commas.
a. Trade name: _______________
b. Generic name: _______________
c. Dosage strength: _______________
d. According to the label, who should not use this medication? _______________
3. Directions: Use the label to identify the information requested. If more than one answer is
necessary, separate your answers with commas.
a. Trade name: ________________
b. Form: ______________________
c. Dosage strength: _____________
d. Total amount in container: _____________
4. Directions: Complete with the correct word(s) or number.
The most common form of oral medication is the __________.
5. Directions: Calculate the following dosage. Use labels where provided. Round oral liquids to the
nearest tenth as indicated.
Order: Tegretol 0.2 g p.o. b.i.d.
Available:
Dosage: _____
6. Directions: Calculate the following dosage. Use labels where provided. Round oral liquids to the
nearest tenth as indicated.
Order: Synthroid 0.3 mg p.o. daily
Available:
Dosage: _____ tab(s)
7. Directions: Calculate the following dosage. Use labels where provided. Round oral liquids to the
nearest tenth as indicated.
Order: Diazepam 4 mg via nasogastric tube t.i.d.
Available: Diazepam oral solution 5 mg per 5 mL
a. How many milliliters should the client receive per dosage? _____ mL
b. How many milligrams will the client receive per day? _____ mg
8. Directions: Calculate the following dosage. Use labels where provided. Round oral liquids to the
nearest tenth as indicated.
Order: Tenormin 100 mg p.o. daily
Available:
9. Directions: Calculate the following dosage. Use labels where provided. Round oral liquids to the
nearest tenth as indicated.
Order: Potassium chloride 40 mEq p.o. every day
Available:
a. How many milliliters would the client receive? _____ mL
b. How many containers are needed? _________ container(s)
10. Directions: Calculate the following dosage. Use labels where provided. Round oral liquids to the
nearest tenth as indicated.
Order: Vibramycin 100 mg p.o. b.i.d. for 14 days
Available:
11. Directions: Calculate the following dosage. Use labels where provided. Round oral liquids to the
nearest tenth as indicated.
Order: Trileptal 0.3 g p.o. b.i.d.
Available:
Dosage ________
12. Directions: Refer to the diagram of the syringes provided to answer the following questions.
The nurse needs to withdraw 1.7 mL of medication into a syringe. The nurse fills the medication to
which area on the syringe?
13. Directions: Calculate the dosages, use labels where provided, and shade in the dosages on the
syringe where provided. Round answers to the nearest tenth unless otherwise indicated.
Order: Morphine 8 mg subcut q4h prn for pain
Available:
a. How many milliliters will you administer? _____ mL
b. Shade in the dosage on the syringe.
14. Directions: Calculate the dosages, use labels where provided, and shade in the dosages on the
syringe where provided. Round answers to the nearest tenth unless otherwise indicated.
Order: Lovenox 50 mg subcut b.i.d.
Available: Lovenox labeled 60 mg per 0.6 mL
a. How many milliliters will you administer? _____ mL
b. Shade in the dosage on the syringe.
15. Directions: Calculate the dosages, use labels where provided, and shade in the dosages on the
syringe where provided. Round answers to the nearest tenth unless otherwise indicated.
Order: Levothyroxine sodium 0.3 mg IV daily
Available: Levothyroxine sodium 200 mcg per 5 mL
How many milliliters will you add to the IV? _____ mL
16. Directions: Calculate the dosages, use labels where provided, and shade in the dosages on the
syringe where provided. Round answers to the nearest tenth unless otherwise indicated.
You need to flush a central venous line with heparin. Which of the two labels shown is appropriate
for a heparin flush? ______________________________
17. Directions: Use the label (where provided) to obtain the necessary information. Round answers to
the nearest tenth where indicated.
Order: cefazolin (Ancef) 0.375 g IM q6h
Available:
a. How many milliliters of diluent will you add for IM use? _____ mL
b. Why will the reconstituted volume be larger than the amount of diluent? __
c. What is the dosage strength of the reconstituted solution? ___________
d. What are the directions for use?
e. How many milliliters will you administer? _____ mL
18. Directions: Use the label (where provided) to obtain the necessary information. Round answers to
the nearest tenth where indicated.
Order: Ceftriaxone 0.5 g IV q12h
Available:
a. How many milliliters of diluent will you add to reconstitute the solution for IV use? _____ mL
b. What is the dosage strength of the reconstituted solution for IV use? _____
c. How many milliliters will you administer? __________ mL
d. Shade in the dosage on the syringe.
19. Directions: Use the label (where provided) to obtain the necessary information. Round answers to
the nearest tenth where indicated.
Order: Amoxicillin clavulanate potassium 275 mg p.o. q12h
Available:
a. How much diluent is recommended for reconstitution? _________
b. What is the dosage strength of amoxicillin when reconstituted? _______
c. What is the total volume of the reconstituted solution? __________
d. How many milliliters will you administer? (based on the amoxicillin) ________
20. Directions: Prepare the following strength solutions. Describe your calculations.
800 mL of 3/4 strength Sustacal via gastrostomy over 6 hours
21. Directions: Prepare the following strength solutions. Describe your calculations.
a. What is the total dosage strength of the vial? _____
b. If 450,000 units IV of penicillin were ordered, which concentration would be appropriate to mix?
_____
c. How much diluent must be added to make the appropriate concentration? _____
d. If the medication is reconstituted at 1:00 AM on December 18, what must you print on the label?
_______________
e. How many milliliters will you give to administer 450,000 units IV? _______
22. Directions: Calculate the dosage and shade in the dosage on the syringe where provided.
A client is on a sliding scale for insulin dosages q6h. The order is for Humulin Regular U-100 subcut
q6h as follows:
Change to new label, see control sheet
Blood Glucose Level
(mg per dL)
Less than 70
201-250
251-300
301-350
351-400
Greater than 400
Regular Insulin
Call MD
4 units
6 units
8 units
10 units
Call MD
a. At 8:00 AM the client's blood sugar is 384 mg/dL. Shade in the syringe with the appropriate
dosage.
b. At 2:00 PM the client's blood sugar is 310 mg/dL. Shade in the syringe with the appropriate
dosage.
23. Directions: Fill in the correct number or word(s).
U-100 on the label of an insulin vial means: ______________________________.
24. Directions: Fill in the correct number or word(s).
Order: Humulin Regular U- 500 units 240 units subcut stat
Available:
a. What is the concentration of the insulin? ____________
b. Is this a short-acting or long-acting insulin? _____________
c. What will you administer using a 1 mL syringe? _________
d. Shade in the appropriate dosage on the syringe
e.
Calculate the dose and shade it in using a U-100 insulin syringe
25. Directions: Interpret the following IV orders.
1,000 mL (1 L) D5W to infuse at a rate of 100 mL per hour
26. Directions: Determine the infusion time for the following IV. State time in both traditional and
military time. Round minutes to the nearest whole number of minutes.
750 mL lactated Ringer solution at 80 mL/hr
a. Determine the infusion time: _____
b. The IV was started at 7:00 AM. When will the infusion be complete? _____
27. Directions: Determine the infusion time for the following IV. State time in both traditional and
military time. Round minutes to the nearest whole number of minutes.
150 mL D5W 1/2 NS infusing at 20 macrogtt/min. Drop factor: 15 gtt/mL.
Calculate the infusion time: _____
28. Directions: Determine the infusion time for the following IV. State time in both traditional and
military time. Round minutes to the nearest whole number of minutes.
60 mL of IV fluid with medication infusing at 50 macrogtt/min. Drop factor is 10 gtt/mL
Calculate the infusion time: _____
29. Directions: Determine the infusion time for the following IV. State time in both traditional and
military time. Round minutes to the nearest whole number of minutes.
500 mL of whole blood to infuse at 130 mL/hr
a. Determine the infusion time: _____
b. The transfusion was started at 2:40 PM. When will the transfusion be completed? _____
30. Directions: Determine the following in drops per minute using the drop factor provided.
500 mL D5W is infusing at a rate of 25 macrogtt/min. The drop factor is 10 gtt/mL. How long will it
take for the IV to infuse? (Express time in hours and minutes.): _____
31. Directions: Determine the following in drops per minute using the drop factor provided.
Lactated Ringer solution is infusing at 45 microgtt/min. The drop factor is 60 gtt/mL. How much
fluid volume will the client receive in 5 hours? _____
32. Directions: Determine the flow rate for the following IV being administered by infusion pump.
Clindamycin 600 mg in 100 mL D5W over 1 1/2 hours: _____
33. Directions: Recalculate the IV flow rate. Determine the percentage of change and state the course of
action. Assume that hospital policy permits recalculation of rates when rates are off schedule and
clients are stable.
500 mL of D5 0.45% NS were to infuse in 5 hours at 33 macrott/min. The drop factor is 20 gtt/mL.
After 2 hours, you notice 250 mL remaining.
a. Recalculated rate: _____
b. Percentage of change: _____
c. Course of action: _____
34. Directions: Recalculate the IV flow rate. Determine the percentage of change and state the course of
action. Assume that hospital policy permits recalculation of rates when rates are off schedule and
clients are stable.
10% calcium chloride (10 mL) over 5 minutes IV push
How many milliliters will be injected per minute? _____ mL
35. Directions: Recalculate the IV flow rate. Determine the percentage of change and state the course of
action. Assume that hospital policy permits recalculation of rates when rates are off schedule and
clients are stable.
Order: Digoxin 0.25 mg IV push. Infuse slowly over 5 minutes.
Available: Digoxin 0.5 mg/2 mL
How many milliliters should be infused per minute? _____
36. Directions: Recalculate the IV flow rate. Determine the percentage of change and state the course of
action. Assume that hospital policy permits recalculation of rates when rates are off schedule and
clients are stable.
Drop factor of 15 on the package of a continuous IV administration set indicates what?
______________________________
37. Directions: Recalculate the IV flow rate. Determine the percentage of change and state the course of
action. Assume that hospital policy permits recalculation of rates when rates are off schedule and
clients are stable.
When an IV medication is injected directly into a vein, the procedure is referred to as
________________.
38. Directions: Calculate the following hourly dosage of heparin (units/hr).
Order: 10,000 units of heparin in 500 mL 0.9% NS to infuse at 120 mL/hr
units/hr = _____
39. Directions: Calculate the following hourly dosage of heparin (units/hr).
Order: Infuse heparin at 2,000 units/hr IV from a solution containing 20,000 units of heparin in 500
mL D5W.
How many milliliters will infuse per hour? _____ mL
40. Directions: Calculate the following hourly dosage of heparin (units/hr).
Order: 40 units/kg/hr heparin IV. The client weighs 50 kg.
How many units should the client receive per hour? _____
41. Directions: Calculate the following hourly dosage of heparin (units/hr).
Order: Heparin 5,600 units subcut stat
Available:
a) How many milliliters will you administer? ___________
b) Shade the dosage in on the syringe provided.
42. Directions: Round dosage and weight to the nearest tenth as indicated. Use labels where provided.
Gentamicin 45 mg IV q8h for a child weighing 45 lb. The recommended dosage is 6 to 7.5
mg/kg/day in three to four divided dosages.
a. What is the child's weight in kilograms? _____
b. What is the safe 24-hour dosage range for this child? _____
c. What is the divided dosage range? _____
d. Is the dosage ordered safe? (Prove mathematically.) _______________ Explain your action:
______________________________
43. Directions: Round dosage and weight to the nearest tenth as indicated. Use labels where provided.
The recommended dosage of Ticar for an adult with a complicated urinary tract infection is 150 to
200 mg/kg/day IV in divided dosages every 4 or 6 hours. The adult weighs 194 lb.
a. What is the 24-hour dosage range for the 194-lb adult in milligrams? _____
b. What is the dosage range in grams? _____
c. The prescriber ordered 4 g IV q6h. Is the dosage ordered safe? _____ Explain:
______________________________
44. Directions: Using the West nomogram, determine the body surface area (BSA) for a child with the
height and weight given.
22 inches and 10 lb: _____ m2
45. Directions: Using the West nomogram, determine the body surface area (BSA) for a child with the
height and weight given.
170 cm and 50 kg: _____ m2
46. Directions: Using the West nomogram or formula when indicated, calculate the following dosages.
Express answer to the nearest tenth.
The recommended dosage of acyclovir is 250 mg/m2. What will be the dosage for a child with a
BSA of 0.27 m2? _____
47. Directions: Using the West nomogram or formula when indicated, calculate the following dosages.
Express answer to the nearest tenth.
The recommended dosage of methotrexate is 25 to 75 mg/m2/wk. The child’s height is 30 inches and
the weight is 25 lb.
a. What is the child's BSA? _____
b. What is the recommended dosage range? _____
48. Directions: Determine the volume of solution that must be added to the burette in the following
problem. Determine the rate in gtt/min for each IV when a microdrop is used, then the rate in mL/hr
for a controller.
The volume of a 75-mg dosage of medication is 3 mL. Dilute to 55 mL and infuse over 45 minutes.
a. Dilution volume: _____
b. gtt/min: _____
c. mL/hr: _____
49. Directions: Calculate the following children's dosages.
Order: Garamycin 15 mg IV q8h
Available:
How many milliliters will you administer? _____ mL
50. Directions: Calculate the following children's dosages.
Order: Nebcin 35 mg IV q8h
Available:
How many milliliters will you administer? _____