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Phamacy Math
Conversion Table
| Term | Definition |
|---|---|
| 1 kg | 2.2 lbs |
| 1 lb | 454 g (gram) |
| 1 gr (grain) | 60 mg (miligram) |
| 1 oz (ounce) | 30 g (gram) |
| 1 kg | 1,000 g |
| 1 g | 1,000 mg |
| 1 mg | 1,000 mcg (microgram) |
| 1 tsp (teaspoon) | 5 ml |
| 1 tbsp (Tablespoon) = 3tsp | 15 ml |
| 1 oz. (fluid once) = 2tbsp | 30 ml |
| 1 cup = 8 fl. oz | 240 ml |
| 1 pt (pint) = 2 cups | 480 ml |
| 1 qt (quart) = 2 pts | 960 ml |
| 1 gal (gallon) = 4L | 4,000 ml |
| 1 kL | 1,000 L |
| 1 L | 1,000 mL |
| 1 mL | 1,000 mcL |
| 1 cc | 1 ml (milileter) |
| 1 z (dram) | 3.7 ml |
| i | 1 |
| v | 5 |
| x | 10 |
| L | 50 |
| C | 100 |
| D | 500 |
| M | 1,000 |
| ss | 1/2 |
| tenth | .1 |
| hundredth | .01 |
| thousandth | .001 |
| ten thousandth | .0001 |
| hundred thousandth | .00001 |
| millionth | .000001 |
| ratio = % = fraction = decimal | 30:100 = 30% = 30/100 = 0.30 |
| w/ w (weight in weight = g) | xg drug (number of g in the drug)/ 100 g product (100 g in the final product) |
| w/ v (weight in volume = mL) | xg drug / 100 mL product (100 mL in the final product) |
| v/ v (volume in volume = mL) | xmL drug/ 100 mL product |
| duration of therapy (how long the IV bag will last) = hrs | volume of fluid (amount of drug to be infused)/ IV flow rate (mL/hr) |
| IV flow rate = mg/hr | volume of fluid/ duration of therapy |
| volume of fluid given per hr (amount of drug in mg/hr) = mg/hr | total amount of drug/ time of infusion |
| quantity of the IV bags needed in 24 hrs = bag | IV flow rate x 24 hours (mL/hr x 24 hrs) |