Calculations Chapter 11

1. Calculations Chapter 11 Medications Measured in Units, Meq, and Percent Concentrations

2. The Basics Percent Meq& Units Done the same as a simple cross hatch. N% = N gm 100 gm (or mls)

3. A physician orders Humulin N 35 units and Humulin R 20 units qam. Which vials of medication should be used?

4. A physician orders heparin sodium 1500 units stat. Which vial of medication is appropriate for this order? • What volume of medication should be administered using the vial chosen?

5. A physician orders penicillin G 750,000 units. Choose the correct label for this medication. • What volume of diluent would be appropriate for this order? • What volume of medication should be administered following the reconstitution above? • Which syringe would be appropriate for this order?

6. A physician orders heparin sodium 12,000 units SC stat and then 6000 units SC daily. What label is appropriate for the stat dose? • What volume of medication should be administered to the patient using this vial of medication? • What label is appropriate for the daily dose? • What volume of medication is to be administered using this label?

7. A physician orders Velosulin regular insulin 56 units to be administered qam 30 min ac and qpm 30 ac evening meal. Which label is correct for this medication? • Show on the following syringe the amount of regular insulin that should be administered with each dose.

8. A physician orders Fragmin 2500 units SC stat. The label for medication available is Fragmin 10,000 units/mL. What is the correct volume of medication to be administered? • Which syringe should be used for administration?

9. A physician orders penicillin G benzathine 750,000 units qmo. The medication is available with a label of penicillin G benzathine 300,000 units/mL. What is the volume of medication that should be administered? • Which syringe should be used to administer this medication?

10. A physician orders 16,000 units of heparin sodium SC stat. What is the most appropriate label for administration of this medication? • What type of syringe should be used for administration of this medication? • What volume of medication should be administered using the most appropriate label?

11. If a container holds 1 L of 5% formaldehyde, what is the weight of formaldehyde in the container?

12. How many grams of sodium chloride would be needed to prepare 1500ml of a 0.9% solution?

13. How many grams of potassium permanganate are needed to make 1200ml of a 5% solution?

14. How many grams of potassium iodide are needed to make 2000ml of a 20% KI solution?

15. An order reads MgSO4 4g IV. Pharmacy stocks Magnesium Sulfate 20% in a 10 ml vial. How many ml would be required for this order? • How many vials?

16. Calcium Gluconate comes as a 25% solution. The order calls for 500mg. How many ml are needed?