Chapter 1, Problem 14SST

Answer the following step by step a) Morphine sulfate 4 mg is ordered. You have a vial with 10 mg/ml. How much do you need? b) You have a morphine sulfate vial with 15 mg/cc. How many cubic centimeters for a 10 mg dose? c) Diphenhydramine (Benadryl) elixir contains 12.5 mg of diphenhydramine HCL in each 5 ml of elixir. How many milligrams are there in one-half teaspoonful dose (1 teaspoon=5 ml)?

The order is for Coumadin 7.5mg po daily. On hand you have tablets containing Coumadin 2.5mg. How many tab will you give?

1) If you have 2.5g of hydrocortisone POWDER, how many grams of a 0.05% ointment can be compounded?   2) How many mL of a 0.45% saline solution can be made with 6750 mg of sodium chloride?   3) Your pharmacy receives an order to compound 120 g of a 1.25% cream. How many mg of drug are required to compound this order?   4) Is it possible to make 1200 mL of a 30% dextrose solution with only 75 g of dextrose?   5) You are asked to compound a 15% zinc oxide cream. How many grams of this cream can you make using 30,000mg of zinc oxide?   6) Using 45g of acetic acid, how many mL of a 20% acetic acid solution can be made?   7) Calculate the percent strength of a solution when 8 g of drug is dissolved in 400 mL of solution.   8) Calculate the percent strength of a solution when 2.5 g of drug is dissolved in 750 mL of solution.   9) Calculate the percent strength of a solution when 5000 mg of drug is dissolved in 500 mL of solution.

Answer the following step by step a) If you have a vial of dexamethasone with 4 mg/ml, how much do you need for a 1-mg dose? b) If Cogentin is available as 0.5 mg/tablet, how many tablets do you need for a 1-mg dose?

The doctor ordered Claforan 1400mg IM every 12 hours.  The directions for the 2 gm vial state:  Add 5 mL of diluent to yield an approximate concentration of 360mg/mL.  How many mL will you give?

39 /50 An order is written for metoclopramide 10mg three times a day. The solution of metoclopramide on hand is 5mg/5mL. How many milliliters per dose should the resident receive? a) 5 mL b) 10 mL c) 15 mL d) None of the above

The order is Rocephin (ceftriaxone) 1g IM daily. The package insert says to add 4.2 mL of diluent to  the 2-g vial and that after reconstitution the strength will be 350 mg/mL. How many milliliters will you  administer? Round to the nearest tenth of a mL.

Concentration (mg/L) Time (hours) Sustained-Release Tablet Oral Solution 0.5 2.26 19.80 1 4.57 18.31 1.5 5.27 15.49 2 6.73 12.37 7.36 9.62 4 7.40 6.85 5 7.50 5.52 6.24 3.10 8. 4.70 1.79 12 2.76 1.58

a) A bottle is labeled Demerol (meperidine) 50 mg/cc. How many cubic centimeters are needed to give a 125 mg dose? b) Promazine HCL comes as 500 mg/10 ml. How many milliliters are needed to give 150 mg dose? c) Hyaluronidase comes as 150 U/cc. How many cubic centimeters for a 30 U dose?