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# Dosages and Flow Rates and Pediatric Drug Administration STOP AND REVIEW Calculating IVs as Percentages 1.

Dosages and Flow Rates and Pediatric Drug Administration
STOP AND REVIEW

Calculating IVs as Percentages

1. Calculate the amount of dextrose and/or sodium
chloride in each of the following IV solutions.

a. 250 mL NS
sodium chloride __________g

b. 3 L of D5NS
dextrose __________g
sodium chloride __________g

c. 500 mL of D5 0.33% NaCl
dextrose __________g
sodium chloride __________g

d. 250 mL of D10W
dextrose __________g

e. 1,000 mL of D5NS
dextrose __________g
sodium chloride __________g

f. 750 mL of NS
sodium chloride __________g

g. 0.75 L of 0.45% NaCl
sodium chloride __________g

h. 300 mL of D12 0.9% NaCl
dextrose __________g
sodium chloride __________g

i. 500 mL of D51/2 NS
dextrose __________g
sodium chloride __________g

j. 0.5 L of D101/4 NS
dextrose __________g
sodium chloride __________g

Test Your Knowledge, pp. 145: Problems, 1, 2, & 3
For the following questions, use the drop factor to calculate the flow rate in gtt / min.

Ordered: 1,000 mL of 0.45% NaCl IV at 200 mL / hr

1. Drop factor 10 gtt / mL
Flow rate: gtt / min

2. Drop factor 15 gtt / mL
Flow rate: gtt / min

3. Drop factor 20 gtt / mL
Flow rate: gtt / min
Test Your Knowledge, p. 146: Problems 20, 21, 22, 25, & 30
20. Ordered: 1,500 mL D5 LR IV to run for 12 hr
Drop factor: 20 gtt / mL
Flow rate: __________ gtt / min
21. How much IV fluid will the patient receive in 24
hours? _______________
22. Who is the manufacturer of the IV infusion set tubing?
_______________
25. Using the shortcut (drop factor constant) method,
calculate the flow rate of the IV as ordered. Show your
work.
Shortcut method calculation: ____________________
Flow rate: __________ gtt / min
30. After consulting the physician, you decide to use an
electronic controller to better regulate the flow rate.
The physician orders that the controller be set to
infuse 500 mL every 4 hours. You should set the
controller for __________ mL / hr.

Critical Thinking, p. 147: Problem 1
1. An elderly patient who had pneumonia was prescribed Rocephin 1 g IV q12h by her physician. The medication, which utilized a new dispensing system, was delivered by the pharmacy technician to the hospital unit. 1 g of Rocephin was supplied as a powder attached to a 50 mL IV bag of 5% dextrose in water. The nurse hung the IV medication and infused the solution. Three days later, another nurse discovered that the Rocephin powder was still in the vial, and that the vial stopper had never been opened. The powder had not been mixed into the IV fluid during this entire period. The nurse who made the error had never worked with this new dispensing system and did not ask for instructions either from the pharmacy technician or another nurse. The pharmacy technician did not include the dispensing instructions or explain the dispensing procedure to the nurse. As a result of this situation, what could possibly happen to the patient’s pneumonia? What could result in the patient’s condition from this change?

Test Your Knowledge, p. 161: Problems 1 & 3.
1. Safe daily dosage range for this child: __________ mg
/ day to __________ mg / day
Safe single dosage range for this child: __________
mg / dose to __________ mg / dose. Is the ordered
dosage safe? __________. If safe, give __________ mL
/ dose. If it is not safe, describe your next step. _____
___________________________________________
2. Child’s weight: __________ kg
Safe daily dosage for this child: __________ U / day to
__________ U / day
Safe single dosage for this child: __________ U / dose
to __________ U / dose

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