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Fundamentals of Pharmacology for Veterinary Technicians Chapter 6 1 GRAM = HOW MANY MILLIGRAMS? (1) Take the 1-gram expression and place the decimal point in the proper place. 1 gram is the same as 1.0 gram (decimal point in place) (2) Move that decimal point three places to the right. Note that as the decimal point is moved, you must add zeros to mark each movement. 1.0 gram = 1.000. = 1,000 milligrams (after converting, you remove the decimal point if no digits follow it.) 1.5 GRAMS = HOW MANY MILLIGRAMS? (1) The 1.5-gram expression has the decimal point already in place. (2) Move that decimal point three places to the right. Remember to add zeros to mark each movement. 1.5 grams = 1.500. = 1,500 milligrams FIGURE 6-1 Converting from grams to milligrams Figure 6-1 Fundamentals of Pharmacology for Veterinary Technicians Chapter 6 1,000 mg = HOW MANY g? (1) Place decimal point in proper place. 1,000 mg = 1000. mg (2) Move that decimal point three places to the left. 1000. mg = 1.000. g or 1 g 2,500 mg = HOW MANY g? (1) Place decimal point in proper place. 2,500 mg = 2500. mg (2) Then move decimal point three places to left. 2500. mg = 2.500. g or 2.5 g FIGURE 6-2 Converting from milligrams to grams Figure 6-2 Fundamentals of Pharmacology for Veterinary Technicians Chapter 6 45 kg = HOW MANY g? (1) Place decimal point in proper place. 45 kg = 45. kg (2) Move that decimal point three places to the right. 45. kg = 45.000. g or 45,000 g FIGURE 6-3 Converting from kilograms to grams Figure 6-3 Fundamentals of Pharmacology for Veterinary Technicians Chapter 6 25 g = HOW MANY kg? (1) Place decimal point in proper place. 25 g = 25. g (2) Then move decimal point three places to left. 25. g = 0.025. kg or 0.025 kg FIGURE 6-4 Converting from grams to kilograms Figure 6-4 Fundamentals of Pharmacology for Veterinary Technicians Chapter 6 2.525 l = HOW MANY ml? (1) 2.525 I: move decimal point three places to right (2) Then 2.525 I = 2.525 ml = 2525 ml. FIGURE 6-5 Converting from liters to milliliters Figure 6-5 Fundamentals of Pharmacology for Veterinary Technicians Chapter 6 500 ml = HOW MANY l? (1) Place decimal point in proper place. 500 ml = 500. ml (2) Then move decimal point three places to left. 500. ml = 0.500. l or 0.500 l FIGURE 6-6 Converting from milliliters to liters Figure 6-6 Fundamentals of Pharmacology for Veterinary Technicians Chapter 6 Figure 6-7 Fundamentals of Pharmacology for Veterinary Technicians Chapter 6 TABLE 6-1 Fundamental Units of the Metric System The fundamental unit of length = the meter The fundamental unit of liquid volume = the liter The fundamental unit of weight = the gram Table 6-1 Fundamentals of Pharmacology for Veterinary Technicians Chapter 6 TABLE 6-2 Important Metric Relationships Mass and/or Weight Gram (g) is the base unit 1 microgram (mcg, µg) 0.000001 of a gram 1 milligram (mg) 0.001 of a gram 1 gram (g) 1 gram 1 kilogram (kg) 1000 grams Volume Liter (l) is the base unit 1 milliliter (ml) 0.001 of a liter 1 liter (l) 1 liter Length Meter (m) is the base unit 1 micrometer (mcm, µm) 0.000001 of a meter 1 millimeter (mm) 0.001 of a meter 1 meter (m) 1 meter 1 kilometer (km) 1000 meters Table 6-2 Fundamentals of Pharmacology for Veterinary Technicians Chapter 6 TABLE 6-3 Metric System Guidelines 1. Arabic numbers are used to designate whole numbers: 1, 25, 2500, and so forth. 2. Decimal fractions are used for quantities less than one: 0.1, 0.01, 0.001, and so forth. 3. To insure accuracy, place a zero before the decimal point: 0.1, 0.01, and so forth. 4. The Arabic number precedes the metric unit of measurement: 1 g, 30 ml, and so forth. 5. Abbreviations are generally used. 6. If the term is used, the prefixes are written in lowercase letters: milli, centi, and so forth. 7. Capitalize the measurement and symbol when it is named after a person: Celsius (C) 8. Periods are not used with most abbreviations or symbols. 9. Abbreviations for units are the same for singular and plural forms. An “s” is not added to indicate the plural form. Table 6-3 Fundamentals of Pharmacology for Veterinary Technicians Chapter 6 TABLE 6-4 Apothecary System Liquid Measures 60 minims = 1 fluid dram 8 fluid drams (480 minims) = 1 fluid ounce 16 fluid ounces = 1 pint 2 pints = 1 quart 4 quarts = 1 gallon Table 6-4 Fundamentals of Pharmacology for Veterinary Technicians Chapter 6 TABLE 6-5 Apothecary System Weight Measures 60 grains (gr) = 1 dram (dr) 8 drams (480 grains) = 1 ounce (oz) 1.2 ounces (oz) = 1 pound (lb) Table 6-5 Fundamentals of Pharmacology for Veterinary Technicians Chapter 6 TABLE 6-6 Eqivalents for the Metric, Household, and Apothecary Systems of Measure Length Metric base unit = meter 1 meter = 1.0936 yards 1 centimeter = 0.39370 inch 1 inch = 2.54 centimeters 1 kilometer = 0.62137 mile 1 mile = 5280 feet or 1.6093 kilometers 1 foot = 0.3048 meter Weight Metric base unit = gram 1 kilogram = 2.2 pounds 1 pound = 453.59 grams 1 pound = 16 ounces 1 grain = 65 milligrams or 1 grain = 60 milligrams 1 dram = 3.888 grams 1 ounce = 28.35 grams 1 ton = 2000 pounds 1 gram = 0.035274 ounces Volume Metric base unit = liter 1 liter = 1.0567 quarts 1 gallon = 4 quarts 1 gallon = 8 pints 1 pint = 2 cups = 16 fluid ounces 1 cup = 8 fluid ounces 1 gallon = 3.7854 liters 1 quart = 32 fluid ounces 1 quart = 0.94633 liter 1 minim = 0.06 milliliter 1 fluid dram = 3.7 milliliter 1 ounce = approximately 30 milliliters 1 milliliter = 1 cubic centimeter Table 6-6 Fundamentals of Pharmacology for Veterinary Technicians Chapter 6 TABLE 6-7 Review of Metric-to-Metric Conversions Linear Measure: base unit is meters (m) 1 m = 100 centimeters (cm) 1 m = 1000 millimeters (mm) 1 m = 1,000,000 micrometers or microns (mcm, µm or µ) 1000 m = 1 kilometer (km) or 0.001 m = 1 km Volume Measure: base unit is liter (l) 1 l = 100 centiliters (cl) 1 l = 1000 milliliters (ml) 1000 l = 1 kiloliter (kl) Weight Measure: base unit is gram (g) 1 g = 100 centigrams (cg) 1 g = 1000 milligrams (mg) 1 g = 1,000,000 micrograms or 0.000001 g = 1 microgram (mcg or µg) 0.001 mg = 1 microgram (mcg or µg) 1 mg = 1000 micrograms (mcg or µg) Table 6-7

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Guide teaches you how many milligrams in a gram

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