Practice Math for Nursing 56
1. MD orders Atropine Sulfate0.4mg IV 60 minutes before surgery. On hand are
tubexes containing 1mg/ml. of atropine sulfate
What is the amount you will administer?
2. MD orders 500 ml bolus of NS over two and half hours. At what hourly infusion
rate should the pump be set?
3. The recommended dose of a medication is 1.5 mg per kg per dose. What would
be the dose for a child who weighs 44 lbs?
4. MD orders Solumedrol 75mg IV push. The pre-measured Solumedrol vial comes in
the strength 40mg/ml. How many mls. do you administer?
5. Your patient asks for pain medication. Demerol 25mg IM q 3-4 hr prn is ordered.
However, there is only tubexes of Demerol 75mg/ml on hand. How many mls do you
Administer?
6. MD orders Decadron 5 mg P.O. q6h. Pharmacy sends 15 scored tablets of
Decadron 2mgs. How many do you administer?
7. Your order reads Vitamin B-12 200 mcg I.M. A vial of Vitamin B-12 on hand is
0.5mg/ml. How many mls do you administer?
8. A new experimental drug “Z” comes in the strength of 250 mg/tablet. “Z” is to be
given in the dose of 5mg/kg. The patient weights 110 pounds. How many tablets
should you administer?
9. 1000ml NS is infusing at 100ml/hr. It was started at 6 AM. When will the next bag
be due?
10. 1000ml D5 ½ NS to be infused in 8 hours. What is rate in ml/hr?
11. 2000ml TPN is to be given in 16 hrs. The IV set has a drip factor of 10gtt/ml.
What is the IV flow rate in ml/hr and in gtts/min?
12. Vancomycin 500mg. in a 250ml D5W is to be infused over 2 hours. What should be
the infusion rate in gtt/min? The IV set is 10gtt/ml.
13. 1.5gm Unasyn is to added to 100ml NS and administered over one hour. The IV
set is 60gtt/ml. What should be the flow rate in gtt/min?
14. Pharmacy sends Heparin 25,000units in D5W 500ml. The order is to administer
1000 units/hr. Calculate in ml/hr. If the IV set is 60gtt/ml , what would be the
gtts/min? If the set is 10gtt/ml, what would be the gtts/min?
15Jim weighs 132 pounds. His doctor ordered to infuse Dopamine 200mg diluted in 250ml D5W at 8mcg/kg/min. The IV set is 60gtt/ml. What is the IV rate in
ml/hr?
16 Administer Ancef 500mg IV in 50ml D5W & infuse it over 30min. What is the
infusion rate in ml/hr?
Then calculate the same med & volume to infuse over 15min. What is the infusion rate in ml/hr?
17. Dr. Kline orders to transfuse 2 units PRBC, each unit over 3 hrs. If each unit of
PRBC contains 250ml, then what will the transfusion rate be in ml/hr?
18.Megan is receiving D5/1/4NS with 20meq KCL at 125ml/hr. It is Friday 2pm and there is only 500ml left in her IV bag. Pharmacy is closed from 6pm Friday to
8am Monday. Her doctor wants Megan to continue with the same IV fluid
through the weekend. Each IV bag contains 1 liter. How many IV bags should
you order to cover her through the weekend?
Recommended Heparin Loading and Continuous Infusion Rate
Stroke Table / Standard TableStroke / Acute Coronary / DVT / Pulmonary
Syndrome / Embolism
Loading / O units/kg / 70 units/kg / 80 units/kg / 100 units/kg
Range (5,000- / Range (5,000-
10,000 units) / 10,000 units
Continuous / 15 units/kg/hr / 15 units/kg/hr / 18 units/kg/hr / 22 units/kg/hr
STANDARD CONTINUOUS IV INSFUSION
(DVT - ACUTE CORONARY SYNDROME - PE)
PTT (seconds) / Re-bolus / Hold drip / Change Drip / Repeat PTT(after
(minutes) / (units /hr) / dose adjustment)
<40 / 70 units/kg / 0 / Increase 200 / 6 hours
40-49 / 0 / 0 / Increase 200 / 6 hours
50-59 / 0 / 0 / Increase 100 / 6 hours
60-80 / 0 / 0 / 0 / 6 hours
81-90 / 0 / 0 / Decrease 100 / 6 hours
91-100 / 0 / 30 / Decrease 200 / 6 hours
>100 / 0 / 60 / Decrease 300 / 6 hours
The hospital dispenses premixed bags of heparin 25,000 units in 250 ml sterile water.
19. Mr. Lee has been diagnosed with a LLE DVT. He weighs 165 lbs. Dr. Campbell
has ordered a loading dose. Using the table above, what is the loading dose in
units? What is the loading dose in mls?
20. After the loading dose, at what rate will the continuous infusion run in units/hr?
What will the rate be in mls/hr?
21. Six hours after the heparin gtt was initiated, Mr. Lee’s PTT=94. Based on the
standard table above, what will you do next? What will you adjust the gtt to in
units? What will the rate be in mls? What is the therapeutic range?