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## Lab 3

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**Lab 3**Intersystem conversion**Intersystem conversion**• In a pharmaceutical or clinical setting, health care professionals encounter more than one system of measurement. Therefore, it becomes necessary to convert all quantities to the same system of measurement.**Practice problems**• Convert the following: • 0.4 mL to minims • 2.5 L to fluidounces • fƷiiss to mL • O iiss to milliliters • 12.5 g to grains • 5 mg to gr • 15 kg to pound aviordupois • 6.2 gr to milligrams • 176 lb (avoir) to kilograms • 850 gr to g**Practice problems**• Accupril®tablets are available in strengths of 5 mg and 40 mg of the drug quinapril HCl. Express these strengths in grains. • Daypro®, a nonsteroidal anti-inflammatory agent, has a maximum daily dose requirement of 26 mg/kg/day. What is the maximum number of Daypro® 600 mg tablets that can be given to a 127-lb patient? • Tylenol with codeine®elixir contains 12 mg of codeine per 5 mL of the elixir. If a pharmacist dispenses 4 fluidounces of the elixir to a patient, how many grains of codeine does the patient receive?**Practice problems**• If a mixture of powders weighing 30 g. is divided into 100 dosage units, how many grains will each dosage unit weight? • A mercury barometer reads 760 mm. express this pressure in inches. • If a physician prescribes 1 ½ grains of phenobarbital sodium from the Eli Lilly Company, how many grams of drug would it contain? • A Carafate®tablet contains 1 g of sucralfate. How many ounces of sucralfatewould be present in ten Carafate®tablets?**Home work**• The dose of a drug is 1/10 gr pre kg of body weight. How many milligrams should be givento a person weighing 154lb? • A formula for cough syrup contains 1/8 gr. Of codeine phosphate per fƷ. How many grams of codeine phosphate should be used in preparing one pint of the cough syrup? • If a quart of suspension contains 2 g of a drug, how many grains would be present in a gallon of the suspension?