Q: Which of the following is the correct sequence of conversion factors needed to solve the problem of converting 0.150 mg of Synthroid to the number of tablets, given that each tablet contains 75 micrograms?

$$0.150\ \mathrm{mg} \times \frac{1000\ \mu\mathrm{g}}{1\ \mathrm{mg}} \times \frac{1\ \text{tablet}}{75\ \mu\mathrm{g}}$$

Q: If a medication order is for 0.200 mg and the available tablets are 50 micrograms each, which of the following calculations will give the correct number of tablets?

$$0.200\ \mathrm{mg} \times \frac{1000\ \mu\mathrm{g}}{1\ \mathrm{mg}} \times \frac{1\ \text{tablet}}{50\ \mu\mathrm{g}}$$

Question 1

A doctor prescribes a dosage of 0.150 mg of Synthroid. If each tablet contains 75 micrograms ($$75\ \mu\mathrm{g}) of $$Synthroid, how many tablets are required to provide the prescribed medication? (1 mg = 1000 micrograms)

Accepted Answer

2 tablets

Question 2

Which of the following is the correct sequence of conversion factors needed to solve the problem of converting 0.150 mg of Synthroid to the number of tablets, given that each tablet contains 75 micrograms?

Accepted Answer

$$0.150\ \mathrm{mg} 	imes \frac{1000\ \mu\mathrm{g}}{1\ \mathrm{mg}} 	imes \frac{1\ 	ext{tablet}}{75\ \mu\mathrm{g}}$$

Question 3

If a patient needs 0.225 mg of Synthroid and each tablet contains 75 micrograms, how many tablets should be administered?

Accepted Answer

3 tablets

Question 4

Which of the following best describes a 'clinical conversion factor' as used in the example problem?

Accepted Answer

A ratio that relates the amount of drug per tablet to the number of tablets

Question 5

A prescription calls for 0.300 mg of a medication. The tablets available are 100 micrograms each. How many tablets are needed? (1 mg = 1000 micrograms)

Accepted Answer

30 tablets

Question 6

Which step is necessary when converting from milligrams to number of tablets, given the strength of each tablet in micrograms?

Accepted Answer

Convert milligrams to micrograms, then use the tablet strength to find the number of tablets

Question 7

A nurse needs to administer 0.075 mg of Synthroid. If each tablet contains 25 micrograms, how many tablets are required?

Accepted Answer

3 tablets

Question 8

If a medication order is for 0.200 mg and the available tablets are 50 micrograms each, which of the following calculations will give the correct number of tablets?

Accepted Answer

$$0.200\ \mathrm{mg} 	imes \frac{1000\ \mu\mathrm{g}}{1\ \mathrm{mg}} 	imes \frac{1\ 	ext{tablet}}{50\ \mu\mathrm{g}}$$

Question 9

A patient is prescribed 0.100 mg of a drug. The pharmacy only has 25 microgram tablets. How many tablets should the patient take?

Accepted Answer

4 tablets

Question 10

Why is it important to use two or more conversion factors in medication dosage calculations?

Accepted Answer

Because the prescribed dose and the available tablet strength are often in different units

Question 11

A doctor orders 0.250 mg of a medication. The available tablets are 125 micrograms each. How many tablets are needed?

Accepted Answer

2 tablets

Question 12

If a patient is prescribed 0.050 mg of Synthroid and each tablet contains 25 micrograms, what is the correct number of tablets to administer?

Accepted Answer

2 tablets

Question 13

Which of the following is a correct metric conversion factor for converting milligrams to micrograms?

Accepted Answer

$$1\ \mathrm{mg} = 1000\ \mu\mathrm{g}$$

Question 14

A patient is prescribed 0.600 mg of a medication. The available tablets are 200 micrograms each. How many tablets are needed?

Accepted Answer

3 tablets

Question 15

If a medication is ordered as 0.125 mg and the available tablets are 25 micrograms each, how many tablets are required?

Accepted Answer

5 tablets

Using Two or More Conversion Factors in GOB Chemistry: Dosage Calculations

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