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Miscellaneous Calculations - Pharmaceutical Calculations

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Miscellaneous Calculations - Pharmaceutical Calculations

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Miscellaneous Calculations - Pharmaceutical Calculations

  1. 1. Miscellaneous Calculations
  2. 2. INTERNATIONAL SYSTEM OF UNITS
  3. 3. INTERPRETATION OF PRESCRIPTIONS AND MEDICATION ORDERS PRESCRIPTION
  4. 4. INTERPRETATION OF PRESCRIPTIONS AND MEDICATION ORDERS PRESCRIPTION
  5. 5. INTERPRETATION OF PRESCRIPTIONS AND MEDICATION ORDERS PEDIATRIC PRESCRIPTION
  6. 6. INTERPRETATION OF PRESCRIPTIONS AND MEDICATION ORDERS COMPOUNDING PRESCRIPTION
  7. 7. INTERPRETATION OF PRESCRIPTIONS AND MEDICATION ORDERS MEDICATION ORDER
  8. 8. SELECTED ABBREVIATIONS, ACRONYMS, AND SYMBOLS USED IN PRESCRIPTIONS AND MEDICATION ORDERS
  9. 9. SELECTED ABBREVIATIONS, ACRONYMS, AND SYMBOLS USED IN PRESCRIPTIONS AND MEDICATION ORDERS
  10. 10. SELECTED ABBREVIATIONS, ACRONYMS, AND SYMBOLS USED IN PRESCRIPTIONS AND MEDICATION ORDERS
  11. 11. SELECTED ABBREVIATIONS, ACRONYMS, AND SYMBOLS USED IN PRESCRIPTIONS AND MEDICATION ORDERS
  12. 12. SELECTED ABBREVIATIONS, ACRONYMS, AND SYMBOLS USED IN PRESCRIPTIONS AND MEDICATION ORDERS
  13. 13. SELECTED ABBREVIATIONS, ACRONYMS, AND SYMBOLS USED IN PRESCRIPTIONS AND MEDICATION ORDERS
  14. 14. INTERPRETATION OF PRESCRIPTIONS & MEDICATION ORDERS • Examples of prescription directions to the pharmacist: (a)M. ft. ung. (b) Ft. sup. no xii (c) M. ft. cap. d.t.d. no. xxiv • Examples of prescription directions to the patient: (a) Caps. i. q.i.d. p.c. et h.s. (b) gtt. ii rt.eye every a.m. (c) tab. ii stat tab. 1 q. 6 h. 7 d.
  15. 15. SELECTED CLINICAL CALCULATIONS • An intravenous infusion contained 20,000 units of heparin sodium in 1000 mL of D5W. The rate of infusion was set at 1600 units per hour for a 160-lb. patient. Calculate: (a) the concentration of heparin sodium in the infusion, in units/mL; (b) the length of time the infusion would run, in hours; (c) the dose of heparin sodium administered to the patient, on a unit/kg/minute basis.
  16. 16. SELECTED CLINICAL CALCULATIONS • The recommended dose of dalteparin sodium (FRAGMIN) for patients undergoing hip replacement surgery is 2500 international units (IU) within 2 hours before surgery, 2500 IU 4 to 8 hours after surgery, and 5000 IU daily 5 to 10 days, starting on the postoperative day. How many milliliters from a vial containing 10,000 IU/mL should be administered (a) before surgery, (b) after surgery, and (c) the day following surgery?
  17. 17. INTRAVENOUS INFUSIONS & PARENTERAL ADMIXTURES • How many grams each of dextrose and sodium chloride are used to prepare a 250-mL bag of D51⁄2NS for intravenous infusion? • A physician orders midazolam hydrochloride (VERSED) 2 mg IV Stat. A pharmacist delivers a vial containing midazolam hydrochloride 5 mg/mL. How many milliliters should be administered? • A medication order for a patient weighing 154 lb. calls for 0.25 mg of amphotericin B per kilogram of body weight to be added to 500 mL of 5% dextrose injection. If the amphotericin B is to be obtained from a constituted injection that contains 50 mg/10 mL, how many milliliters should be added to the dextrose injection? • A medication order for a child weighing 44 lb. calls for polymyxin B sulfate to be administered by the intravenous drip method in a dosage of 7500 units/kg of body weight in 500 mL of 5% dextrose injection. Using a vial containing 500,000 units of polymyxin B sulfate and 10 ml of sodium chloride injection as the solvent, explain how you would obtain the polymyxin B sulfate needed in preparing the infusion.
  18. 18. ALLIGATION ALTERNATE • How many milliliters of 50% w/v dextrose solution and how many milliliters of 5% w/v dextrose solution are required to prepare 4500 mL of a 10% w/v solution? • In what proportion should 20% benzocaine ointment be mixed with an ointment base to produce a 2.5% benzocaine ointment?
  19. 19. Constitution of Dry Powders for Oral Use • The label for a dry powder package of cefprozil (CEFZIL) for oral suspension directs the pharmacist to add 72 mL of purified water to prepare 100 mL of suspension. If the package contains 2.5 g of cefprozil, how many milligrams of the drug would be contained in each teaspoonful dose of the constituted suspension? • Label instructions for an ampicillin product call for the addition of 78 mL of water to make 100 mL of constituted suspension such that each 5 mL contains 125 mg of ampicillin. Calculate the volume of dry powder in the product and the total content of ampicillin. • Using the product in the previous example, if a physician desires an ampicillin concentration of 100 mg/5 mL (rather than 125 mg/5 mL), how many milliliters of water should be added to the dry powder?
  • LutfiyaMolabaccus

    Oct. 20, 2020
  • PranjayPatil1

    Aug. 25, 2020
  • RabieAlhabeeb

    Aug. 1, 2020
  • UsmanFadilulahiAyokunle

    Apr. 6, 2020
  • HasithaKamal

    Nov. 24, 2017
  • KhloudAlonazi

    Oct. 21, 2017

Miscellaneous Calculations - Pharmaceutical Calculations

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