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Effective: Summer 2011

Prerequisites: Prerequisite: PHT 54A.
Grade Type: Letter Grade Only
Not Repeatable.
FHGE: Non-GE Transferable: CSU
3 hours lecture. (36 hours total per quarter)

Student Learning Outcomes -
  • Calculate the correct oral and parenteral safe dosages of drugs using information derived from prescriptions, drug labels, package inserts and medical orders using proper medical and pharmaceutical notation.
  • Accurately calculate and utilize the required ingredients for compounding pharmaceutical products from the various physician orders.
Description -
Calculation of the correct oral and parenteral dosages of drugs using information from prescriptions or medications orders. Accurate determination of the correct amount of ingredients for the compounding of pharmaceutical products from a prescription or medications order. Intended for students in the Pharmacy Technician Program; enrollment is limited to students accepted in the program.

Course Objectives -
The student will be able to:
  1. Read and write proper medical notation on the drug order.
  2. Interpret and compare information on drug labels.
  3. Calculate the oral dosages of drugs, both solid and liquid forms, using ratio-proportion and formula.
  4. Employ critical thinking skills to determine a "reasonable dose."
  5. Calculate the parenteral dosages of drugs using ratio-proportion and formula.
  6. Reconstitute and label medications supplied in dry or concentrated form.
  7. Differentiate between various directions and select the correct direction for reconstitution.
  8. Calculate the percentage strength and the ratio of concentration..
  9. Calculate standard pediatric dosages.
  10. Calculate concentrations and dilutions using V/V, W/W, W/V.
  11. Calculate dosages using milliequivalents.
  12. Define and calculate the percentage strength of a solution using various methods of alligations.
  13. Calculate intra-venous solution flow rate for electronic and manual infusion systems.
  14. Calculate intra-venous solution volume and infusion time.
Special Facilities and/or Equipment -
  1. Textbook and problem set worksheets
  2. Calculators
  3. Specialized computer programs
  4. College Library with generalized and specialized references.

Course Content (Body of knowledge) -
  1. Medical Notation (Lec)
    1. Standard common medical abbreviations
    2. Notation specifying dosage, route, and frequency of medication
    3. Medication orders
  2. Drug labels
    1. Brand and generic names
    2. Strengths
    3. Forms
    4. Total volume
    5. Directions for mixing
    6. Route of administration
    7. Manufacturer name and lot number
    8. Expiration date
  3. Oral dosage of drugs (Lec)
    1. Conversion of units of measurement to the same system and same size units
    2. Reasonable amounts
    3. Formula D x Q = drug dosage
    4. Ratio-proportion drug dosage
    5. 10% maximum, variance
    6. Tablets, capsules, and liquids
  4. Parenteral dosage of drugs. (Lec)
    1. Conversion of units of measurement to the same system and same size units
    2. Reasonable amounts
    3. Formula D x Q = drug dosage
    4. Ratio-proportion drug dosage
    5. Reconstitution directions
    6. Insulin measurements and syringes
    7. Types and sizes of syringes
    8. Dosage expressed as ratio or percent
  5. Pediatric dosages (Lec)
    1. Young's Rule
    2. Clark's Rule
    3. Fried's Rule
    4. Body Weight Method
    5. BSA Method
    6. Alternate BSA Method
    7. Combination drugs calculation
    8. Safe dosages
  6. Concentrations and dilutions (Lec)
    1. V/V
    2. W/W
    3. W/V
  7. Milliequivalents
    1. Calculating miliequivalents
    2. Calculations using miliequivalents
  8. Alligations (Lec)
  9. IV Calculations
    1. Components
    2. Milliliters per hour
    3. Drop factor/calibration
    4. IV flow rates in gtt/min
    5. Flow rate for off-schedule intravenous infusion
    6. Small volume IVPB
Methods of Evaluation -
The following evaluation methods may be used but is not limited to
  1. Objective exams
  2. Cooperative learning assignments
  3. Computational work
  4. Other: Frequent written lecture quizzes
Representative Text(s) -
Pickar, Gloria and Amy P. Abernethy. Dosage Calculations 8th Edition Clifton Park:Delmar Learning, 2007.

Disciplines -
Pharmacy Technician.
Method of Instruction -
  1. Lecture presentations and classroom discussion.
  2. In-class problem solving activities for students followed by instructor-guided interpretation and analysis.
  3. In-class discussion of problem sets and evaluation.
Lab Content -
Not applicable.
Types and/or Examples of Required Reading, Writing and Outside of Class Assignments -
  1. Reading Assignments: Weekly reading assignments from text and completing of problem sets.
  2. Lecture: Weekly lecture covering subject matter from text assignment with extended topic information. Class discussion is encouraged.
  3. Review of handouts, problem sets and relevant reading material.