Ratio
If you were preparing 100 mL of a 10% solution of hydrogen peroxide for an irrigation, how much peroxide and how much water would you use?
10 mL peroxide and 90 mL water
Mezlocillin 3 g IVPB in 130 mL normal saline (NS) over 1 hour. Drop factor is 10. Calculate the flow rate
22 gtt/min
Infusing: IV of D5W 100 mL with 50 units Novolin II R insulin added. It is flowing at 2 mL per hr.
Calculate the ordered flow rate
4 mL/h
A child (12 years old) has hypertension. Order: Methyldopa (Aldomet) 250 mg, PO, bid
Child’s weight: 110 lb Pediatric dose parameter: 10 mg/kg/day in two to four divided doses
Drug available: 250 mg/5ml
How many milligrams would the child receive per day?
Dose?
500 mg/day
250 mg/dose
4 oz = _____ Tbsp
8 Tbsp
Ration of active to inactive ingredients = 1:9
Volume and frequency ordered = 60 mL TID
What is the fractional strength (active ingredient to total parts?
What is amount of active ingredient to be used?
1/10
6 mL
A physician orders amikacin 400 mg in 100 mL of NS over 30 minutes. The IV tubing DF 10. How many drops per minute would the amikacin be infused? (Round final answer to the nearest whole number)
____gtt/min
33 gtt/min
Calculate the weight-based heparin IV bolus dose. Use heparin 1,000 units/mL
Patient’s weight: 45 kg
Dose: heparin 35 units/kg
1.6 mL
An IV of D5W 500 mL was ordered to be infused over 10 hours at a rate of 13 gtt/min. The administration set delivers 60 gtt/mL. After 3 hours, you notice that 300 mL of IV solution is left. Recalculate the gtt/min for the remaining IV solution. _____
43 gtt/min
20 mL = _____ fluid oz
Fractional Strength (Active Ingredient to Total Parts)=1/4
Volume and Frequency Ordered= 200 mL q 8hr
What is the ratio of active to inactive ingredients?
Amount Diluent (Inactive Ingredient to be Added)
1:3
150 mL
A nurse practitioner orders 500 mL of 0.9% normal saline to infuse over 2 hours. The IV tubing has a drop factor of 60. How many drops per minute will the nurse infuse the IV fluids?
250 gtt/min
The doctor orders an infusion of heparin 21 units/kg/h IV for a patient weighing 85 kg. The pharmacy supplies heparin 25,000 units in D5W 500 mL. The available infusion pump is calibrated to the tenths. The nurse sets the rate of the infusion pump for
35.7 mL/h
An IV is infusing at 80 gtt/min. The drop factor is 20 gtt/mL.
In 3 hours, the client will have received how many mL?
What is the flow rate in mL/hr?
720 mL
240 mL/hr
0.4 g = _____ mg
400 mg
Percent strength ordered = 50%
Volume and frequency ordered = 30 mL every hour
What is the ratio of active to inactive ingredients?
What if the fractional strength (active ingredient to total parts)?
1:1
1/2
A patient has acyclovir 480 mg in 150 mL of NS ordered to infuse over 120 minutes. The IV tubing has a drop factor of 20. How many drops per minute would the acyclovir be infused? (Round final answer to the nearest whole number)
____gtt/min
25 gtt/min
Fragmin 80 international units per kg is ordered prophylactically q12h subcut for Mrs. V, a patient with unstable angina. Mrs. V weighs 110 lb.
Available: Fragmin 5000 IU/0.2mL
How many units will the nurse prepare for Mrs. V.?
4000 u
The recommended children's dosage of Keflex is 25 to 50 mg/kg/day in divided doses. The safe dosage
range for a child weighing 42 lb is _______________.
If given BID what would the SDR be?
477.5 to 955 mg/day
Round the following 156.354 to the nearest:
Hundreds
Tenths
200
156.4
The patient is told upon discharge to soak his heel every 2 hr for 20 min in 500 mL of 1 part Epson salts to 4 parts (the ratio) of warm water.
a. What is the percentage of Epson salts in the solution?
b. How much Epson salts should the patient measure in the metric measuring cup provided?
20%
100 mL
The nurse practitioner also orders Kefzol 1 gram/25 mL IV over 15 minutes every 8 hours. The IV tubing has a 10 drop per milliliter factor. How many drops per minute would the Kefzol be infused? (Round final answer to the nearest whole number)
______gtt/min
1 gtt/min
A physician orders amikacin 400 mg in 100 mL of NS over 30 minutes. The IV tubing has a 10 drop per milliliter factor. How many drops per minute would the amikacin be infused? (Round final answer to the nearest whole number)
____gtt/min
15.5 mL/h
The physician orders 1,000 mL of 10% glucose to infuse at 35 gtt/min. The administration set delivers 15 gtt/mL.
How long will it take to infuse the IV?
What is the flow rate in mL/hr?
7 hr and 6 min
140 mL/hr
Ones
Tens
Tenths
4
40
5843.7