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M5 Linear Ratio & Proportion
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Terms in this set (35)
10 mg : 1 tablet
Write the linear ratio that expresses the correct dosage strength for the medications below.
250 mg : 5 mL
Write the linear ratio that expresses the correct dosage strength for the medications below.
12.5 mg : 1 tablet
Write the linear ratio that expresses the correct dosage strength for the medications below.
50 mcg : 1 mL or 0.05 mg : 1 mL
Write the linear ratio that expresses the correct dosage strength for the medications below.
25 mg : 5 mL
Write the linear ratio that expresses the correct dosage strength for the medications below.
Determine which proportion is set up correctly. Calculate the answer.
The order is for 16 mg of a medication. The dosage strength of the medication is 4 mg in one drop. How many drops will the nurse administer?
a. 16 mg : 1 drop 4 mg : x drop
b. 4 mg : 1 drop 16 mg : x drop
b. 4 mg : 1 drop :: 16 mg : x drop, x = 4 drops
Determine which proportion is set up correctly. Calculate the answer.
The patient is to receive 500 grams of a drug daily. The drug bottle is labeled 650 grams in 1 mL. How many mL should the nurse administer? Round answer to the nearest hundredth mL.
a. 500 gram : x mL :: 1 mL : 650 gram
b. 650 gram : 1 mL :: 500 gram : x mL
b. 650 gram : 1 mL :: 500 gram : x mL, x = 0.77 mL
Determine which proportion is set up correctly. Calculate the answer.
The pharmacy sends a drug labeled 20 mg per tablet. The nurse administers 0.5 tablet. How many mg did the nurse administer?
a. 20 mg : 1 tablet x mg : 0.5 tablet
b. 1 tablet : 20 mg 0.5 mg : x tablet
a. 20 mg : 1 tablet :: x mg : 0.5 tablet, x = 10 mg
Determine which proportion is set up correctly. Calculate the answer.
The patient is to receive 5 mg of Drug Z now. The pharmacy sends a dose of Drug Z labeled 2.5 mg in 0.5 mL. How many mL should the nurse administer?
a. 2.5 mg : x mL 5 mg : 0.5 mL
b. 2.5 mg : 0.5 mL :: 5 mg : x mL
b. 2.5 mg : 0.5 mL :: 5 mg : x mL, x = 1 mL
Determine which proportion is set up correctly. Calculate the answer.
The patient takes 6 doses of a medication each day. The medication contains 4 mg in each dose. The nurse needs to know how many mg the patient takes each day.
a. 4 mg : 1 dose x mg : 6 doses
b. 4 mg : 6 doses x mg : 1 dose
a. 4 mg : 1 dose :: x mg : 6 doses, x = 24 mg
Convert the metric units and solve for x in the proportions below.
500 mg : 1 pill :: 0.25 g : x pill
0.5 pill
Convert the metric units and solve for x in the proportions below.
0.25 mg : 1 mL :: 62.5 mcg : x mL
0.25 mL
Convert the metric units and solve for x in the proportions below.
32 mcg : 1 capsule :: 0.096 mg : x capsule
3 capsules
Convert the metric units and solve for x in the proportions below.
0.2 g : 1 tsp :: 500 mg : x tsp
2.5 tsp
Convert the metric units and solve for x in the proportions below.
2.5 g : 1 ounce :: 4,000 mg : x ounce
1.6 ounces
5 mg : 1 tablet
Write the dosage strength of the medication as a linear ratio.
750 mg : 1 tablet
Write the dosage strength of the medication as a linear ratio.
500 mcg : 2 mL (0.5 mg : 2 mL) or 250 mcg: 1 mL (0.25 mg : 1 mL) The Lanoxin label gives mathematically equivalent dosage strengths and their metric equivalents.
Write the dosage strength of the medication as a linear ratio.
Review the information provided and determine whether the nurse has set up the problem correctly.
A drug is labeled 0.1 mg per 10 mL. The doctor has ordered 0.25 mg of the drug. The nurse sets up the following proportion to calculate the dose: 10 mL : 0.1 mg :: x mL : 0.25 mg Has the nurse set up the problem correctly? ____________
Yes, the units match and are in the correct order in each ratio. The proportion is set up correctly.
Review the information provided and determine whether the nurse has set up the problem correctly.
A medication has 350 grams in each tablet. The doctor has ordered 700 grams PO daily. The nurse sets up the following proportion to calculate the dose: 700 g : 1 tablet 350 g : x tablet Has the nurse set up the problem correctly? ______________
No, the nurse has not chosen the correct dosage strength. The correct proportion is: 350 g : 1 tablet :: 700 g : x tablet
Set up a linear proportion and solve the problem.
The label on the medication container states 0.25 gram tablets. The patient is to receive 0.125 gram each morning. How many tablets will the patient receive?
The nurse will give 0.5 tablet. (0.25 g : 1 tablet :: 0.125 g : x tablet)
Set up a linear proportion and solve the problem.
The patient is to receive 8.75 mg of a medication. The pharmacy sends the medication to the nurse in a container labeled 2.5 mg/mL. How many mL will the patient receive?
The nurse will give 3.5 mL. (2.5 mg : 1 mL :: 8.75 mg : x mL)
Set up a linear proportion and solve the problem.
The medication is available in 0.05 mg scored pills. The order is for 0.125 mg. How many pills will the patient receive?
The nurse will give 2.5 pills. (0.05 mg : 1 pill :: 0.125 mg : x pill)
20 mL
The patient tells the nurse that he takes 10 mg of Prilosec oral suspension four times daily. The prepared Prilosec medication has a dosage strength of 2.5 mg/5 mL. How many mL should the patient take per dose?
1.5 tsp
The pharmacy sends the nurse the following bottle of constulose oral solution. The order is to administer 5 g PO daily. How many tsp will the patient receive?
0.4 mL
The patient is to receive 6 mg of IV ketorolac every 6 hours as needed for postoperative pain. How many mL will the nurse give per dose?
5 mL
The doctor orders palonosetron HCl 250 mcg IV 30 minutes prior to chemotherapy. The nurse has the following vial of palonosetron HCl. How many mL will the nurse give to the patient?
0.7 ounce
The patient is to receive 350 mg of a medication. The medication is labeled 250 mg in 15 mL. How many ounce(s) will the nurse administer?
2 tablets
The physician's order is for 0.01 g PO each morning. How many tablets will the nurse instruct the patient to take?
5 bottles
The patient is to drink 2,000 mL of water daily. Bottled water is available in a 400 mL size. How many bottles will the patient need to drink daily?
3 capsules
The pharmacy sends the nurse the following medication. How many capsules will the nurse give to the patient if the physician's order is for calcitriol 1.5 mcg PO daily?
4 capsules each day
The patient takes 50 mg of Strattera PO twice a day. How many capsules of Strattera will the patient receive each day?
6 mL
The physician orders 600 mg of cyclosporine oral solution PO daily for the patient. The pharmacy sends the following bottle of cyclosporine. How many mL will the patient receive?
0.75 mL
The order is for methylprednisolone acetate 30 mg IM now. The pharmacy sends the following vial of methylprednisolone acetate. How many mL will the nurse administer?
0.5 oz
The following is the medication order: Give 0.75 g of cephalexin oral suspension PO every 12 hr. The following bottle of cephalexin is available. How many oz will the nurse administer to the patient with each dose?
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