Drug and Dosage Calculations Practice V
Completion
Complete each statement.
1. Directions: Write the equivalent indicated.
4 1/4 qt = _____ mL
2. Directions: Write the equivalent indicated.
11 1/2 oz = ________ mL
3. Directions: Write the equivalent indicated.
0.005 g = _____ mg
4. Directions: Write the equivalent indicated.
2 oz = _____ tbs
5. A client’s intake was the following:
1 1/4 cup of coffee (1 cup = 8 oz)
4 oz cranberry juice
1 1/2 bowls of chicken broth (1 bowl = 6 oz)
3 1/2 glasses of water (1 glass = 6 oz)
The client voided urine as follows: 260 mL, 180 mL, 500 mL, and 425 mL
Calculate the client’s I&O in mL.
a. Intake: _____ mL
b. Output: _____ mL
6. A client drinks 300 mL of magnesium citrate. How many ounces did the client consume? _____ oz
7. A client has an order for Maalox 30 mL p.o. at bedtime. How many tsb will the nurse instruct the
client to take? _____ tsb
8. A client drinks 4 3/4 cups (cup = 8 oz) of a liquid. How many mL did the client drink? ______ mL
9. A client reports drinking 48 oz of water on a visit to the clinic. How many mL did the client drink?
_________ mL
10. A client needs to drink 1 1/2 oz of an elixir per day. How many tsp would this be equivalent to?
________ tsp
11. Directions: For the following scenario, identify which of the "six rights" of medication
administration has been violated.
A nurse enters a room to administer medications to a client. The order is for Prednisolone 2.5 mg
p.o. b.i.d. The nurse administers prednisone 25 mg p.o.: _______________, _______________.
12. Directions: Complete the following sentence with the correct word or number.
When a verbal order is received by an authorized individual, the individual must do the following:
(Write in the correct sequence.) _______, _______, _______.
13. Directions: Complete the following sentence with the correct word or number.
The use of posters and brochures to encourage clients to use strategies to avoid medication errors is
called the _____________ .
14. 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: _______________
15. 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. Directions before using: _______________
16. 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. Form: _______________
d. Controlled substance schedule: _______________
17. 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: _______________
18. 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: _____
19. Directions: Calculate the following dosage. Use labels where provided. Round oral liquids to the
nearest tenth as indicated.
Order: Benazepril (Lotensin HCT) 20 mg per 25 mg p.o. every day
Available:
a. How many tablets should the client receive per dosage? _____ tab(s)
b. How many tablets would be needed for 1 week? _____ tab(s)
20. Directions: Calculate the following dosage. Use labels where provided. Round oral liquids to the
nearest tenth as indicated.
Order: Ceftin 500 mg p.o. q12h
Available:
Dosage: _____
21. Directions: Calculate the following dosage. Use labels where provided. Round oral liquids to the
nearest tenth as indicated.
Order: Norvasc 5 mg p.o. daily
Available:
Dosage: _____
22. 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:
23. Directions: Calculate the following dosage. Use labels where provided. Round oral liquids to the
nearest tenth as indicated.
Order: Zithromax 160 mg p.o. daily
Available:
Dosage: _____
24. Directions: Calculate the following dosage. Use labels where provided. Round oral liquids to the
nearest tenth as indicated.
Order: Terbutaline 5 mg p.o. q8h
Available:
a. Which dosage of Terbutaline would you use and why? ________________
b. How many tablets will you give? ______ tab(s)
25. Directions: Calculate the following dosage. Use labels where provided. Round oral liquids to the
nearest tenth as indicated.
Order: Lithium citrate 0.6 g p.o. b.i.d.
Available:
.
Dosage: _____
26. 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
27. 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
28. Directions: Use the label (where provided) to obtain the necessary information. Round answers to
the nearest tenth where indicated.
Order: Zosyn 3 g IV q6h
Available:
a. How many milliliters of diluent should be used to reconstitute the solution?
b. What is the dosage strength of the prepared solution? _______________
c. How many milliliters will you add to the IV? _____ mL
_____ mL
29. Directions: Use the label (where provided) to obtain the necessary information. Round answers to
the nearest tenth where indicated.
Order: Synagis 65 mg IM q8h
Available: Refer to label and package insert
a.
What
diluent is recommended for reconstitution? ___________
b. How much diluent must be added? ____________
c. What is the dosage strength of the reconstituted solution? ______
d. How many milliliters will you administer? ________
e. How long is the reconstituted solution good for? ___________
30. 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.
31. 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) ________
32. Directions: Indicate how you would prepare each of the following using full-strength hydrogen
peroxide (solute) and normal saline (solvent).
300 mL of 3/4 strength for skeletal pin care
33. Directions: Fill in the correct number or word(s) to answer the question.
The name for the main infusion administration set is _______________.
34. Directions: Fill in the correct number or word(s) to answer the question.
In IV fluid abbreviations, D5NS identifies what IV fluid? _______________
35. Directions: Calculate the number of grams of NaCl and /or dextrose in the following solutions.
500 mL 1/2 NS sodium chloride (NaCl): _____
36. 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.
250 mL 0.9% NS at 30 mL/hr
a. Determine the infusion time: _____
b. The IV was started at 7:00 PM. When will the infusion be complete? _____
37. 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.
100 mL D5 /2 NS at 40 mL/hr
a. Determine the infusion time: _____
b. The IV was started at noon. When will the infusion be complete? _____
38. 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: _____
39. 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.
Total parenteral nutrition (TPN) solution of 1,000 mL at 30 mL/hr
Determine the infusion time: _____
40. Directions: Determine the following in drops per minute using the drop factor provided.
0.45% NS at 30 mL/hr
a. 10 gtt/mL _____
b. 15 gtt/mL _____
c. 20 gtt/mL _____
d. 60 gtt/mL _____
41. Directions: Determine the flow rate for the following IV being administered by infusion pump.
Ampicillin 1.5 g in 100 mL 0.9 % NS over 45 minutes: _____
42. 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: Regular Humulin Insulin 8 units/hr IV
Available: 50 units of insulin in 150 mL 0.9% NS
What rate in mL/hr will infuse 8 units/hr? _____
43. 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
________________.
44. Directions: Calculate the following hourly dosage of heparin (units/hr).
Order: 30,000 units of heparin in 500 mL D5W to infuse at 15 mL/hr
units/hr = _____
45.
Directions: Use the following weight-based heparin protocol for the following problems.
1. Bolus heparin at 80 units/kg
2. Begin intravenous infusion of heparin at 18 units/kg/hr using 25,000 units of heparin in 250
mL of 0.45% NaCl for 100 units per mL
3. Adjust intravenous heparin daily on the basis of APTT results.
 APTT less than 35 sec. Rebolus with 80 units/kg and increase rate
by 4 units/kg/hr
 APTT 35-45 sec. Rebolus with 40 units/kg and increase rate by
2 units/kg/hr
 APTT 46-70 sec. No change
 APTT 71-90 sec. Decrease rate by 2 units/kg/hr
 APTT greater than 90 sec. Stop heparin infusion for 1 hour and decrease
rate by 3 units/kg/hr
A client weighs 158.4 lb. Determine the bolus dose of heparin, the initial infusion rate, and then
adjust the hourly infusion rate based on the APTT results. APTT is reported as 88. The IV pump is
calibrated to deliver in tenths
of an mL/hr.
46. Directions: Calculate the dosages as indicated.
Nitroglycerine has been ordered to titrate at 10 mcg/min to 30 mcg/min, and the rate should be
increased by 5 mcg/min every 3-5 minutes for chest pain. The solution contains 50 mg nitroglycerin
in 250 mL D5W. Develop a titration table in 5 mcg increments. The pump delivers in tenths of a
milliliter.
47. Directions: Round dosage and weight to the nearest tenth as indicated. Use labels where provided.
Erythromycin ethylsuccinate 62.5 mg p.o. q6h is ordered for an infant weighing 10 lb 4 oz. The
recommended safe dosage is 30 to 50 mg/kg/24 hr divided q6h.
a. What is the infant's weight in kilograms? _____
b. What is the safe 24-hour dosage range for this infant? _____
c. What is the divided dosage range? _____
d. Is the dosage ordered safe? (Prove mathematically.) _______________ Explain your action:
______________________________
48. 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? _____
49. Directions: Using the West nomogram or formula when indicated, calculate the following dosages.
Express answer to the nearest tenth.
The recommended dosage of Zovirax for a child who is immunosuppressed and has a varicellazoster infection is 500 mg/m2. The child weighs 26.5 lb and is 58 inches tall.
a. What is the child's BSA? _____
b. What is the recommended dosage? _____
50. Directions: Calculate the following children's dosages.
Order: Amoxil 75 mg p.o. q8h
Available:
How many milliliters will you administer? _____ ml