Deck 7: Measurement Systems

Question 1

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?

Answer 1

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

Question 2

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?

Answer 2

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

Question 3

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?

Answer 3

0.5 mL
mL needed = 25 divide by 50 = 0.5 mL

Question 4

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.

Question 5

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.

Question 6

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?

Question 7

The physician has ordered a child's antibiotic dose as 5 mg/kg. The child weighs 14 kg. The antibiotic is provided in a vial with 10 mg/mL. How many mL of antibiotic will be dispensed? Round to the nearest whole number.

Question 8

The nurse is preparing to provide an injection of ceftriaxone (Rocephin) to a client. The order indicates the patient needs 750 mg of the medication. The bottle is labeled 350 mg/mL. How many mL of ceftriaxone will the nurse inject?

Question 9

While attempting to track the intake of an elderly client, the nurse asks the client to identify what the client drank that day. The client reports, "I had a small cup of tea, a glass full of juice, and 2 cups of milk." The nurse would record how many mL for this client's intake?

Question 10

While working in the pediatric clinic, the nurse weighs a 5-year-old child as 20.5 kg. The mother asks, "How much is that in pounds?" Provide the child's weight to the nearest whole pound.