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# Pharmacology Clear and Simple

Nursing

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## Quiz 7 : Measurement Systems

While preparing to dispense a dose of liquid medication for a client with a gastrostomy tube, the nurse notes the ordered dose is 2.5 mg of a medication, and the bottle indicates there are 5 mg/15 mL. How many mL will the nurse draw into the cath-tipped syringe when dispensing the medication?
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Essay

7.5 mL
Number of mL needed = 2.5 divide by 5 x 15 = 7.5 mL

The nurse is caring for a client who is to receive cefoperazone (Cefobid) 1.5 g in 100 mL normal saline intravenously over 30 minutes. The nurse begins the infusion, and a little while later, the client calls to report itching, so the nurse stops the infusion. The pump reading has recorded 44 mL infused. Approximately how much medication (in mg) did the client receive?
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660 mg
How many mg did the patient receive?
1.5 grams = 1500 mg
1500 divide by 100 = 15 mg per mL of solution
44 mL x 15 mg = 660 mg infused

A client is ordered 25 mg of diphenhydramine (Benadryl) by intramuscular injection. The medication is supplied in a 1-mL vial with a 50-mg dosage. How many mL will the nurse inject?
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0.5 mL
mL needed = 25 divide by 50 = 0.5 mL

The nurse is mixing diluent with a powdered medication. The package directions instruct the nurse to mix 3 mL of sterile water to achieve a concentration of 4 mg/mL. The client's dose is 6 mg. How many mL will the nurse withdraw to provide to the client? Round to the nearest tenth.
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The nurse is providing care for a newborn who weighs 8 lb, 8 oz. The physician has ordered medications based on a kg weight. How much does the infant weigh in kg? Round to the nearest tenths.
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While removing the dinner tray from a client's room, the nurse notes the client drank 1 cup of water, 6 oz of beef broth, 4 oz of gelatin, 120 mL of juice, and a 2 oz popsicle. What would the nurse record for intake in mL?
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