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MedMath Ch 4, 5, 7
Metric/International (SI) System
Question | Answer |
---|---|
1 kilometer = ____ meters | 1000 meters |
1 kg = ____ grams | 1000 grams |
1 g = ____ mg | 1000 mg |
1 mg = _____ mcg | 1000 mcg |
1 L = ______ mL | 1000 mL |
When converting smaller units to larger units, you move the decimal 3 places to the left. | e.g., 200 mL = 0.2 L |
When converting larger units to smaller units, you move the decimal 3 places to the right. | e.g., 0.5 g = 500 mg |
In solutions, percent represents the number of grams of drug per 100 mL of solution. | e.g., 100 mL of a 2.5% solution will contain 2.5 g of drug |
Milliequivalents (mEq) is an expression of the number of grams of a drug contained in 1 mL of a normal solution | e.g., 50 mEq |
Ratio strengths are used primarily in solutions; they represent parts of drug per parts of solution | e.g., 1:1000 (one part drug to 1000 parts solution) |
The less solution a drug is dissolved in, the stronger the solution. | e.g., a ratio strength of 1:10 (1 part drug to 10 parts solution) is much stronger than a 1:100 (1 part drug to 100 parts solution) |
Ratio strengths are always expressed in their simplest terms. | e.g., 2:10 would be incorrect because it can be reduced to 1:5 |
1 oz. = ______ mL | 30 mL |
1 T = ______ mL | 15 mL |
1 tsp = _____ mL | 5 mL |
1 dr (dram) = ______ mL | 4 mL |
1 gtt (drop) = ______ mL | 1 mL |
List the 6 rights of drug administration. | right drug; right dosage; right route; right time; right person; right recording |