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You have a vial labeled 5 mg/mL of medication for IM injection. The physician orders a 2 mg dose. How many mL will you administer?

0.2 mL

1 mL

0.4 mL

0.5 mL

Answer and Explanation

The Correct Answer is C

Identify the ordered dose and available concentration

Ordered Dose: 2 mg

Available Concentration: 5 mg/mL

Calculate the volume to administer

Volume = Ordered Dose ÷ Concentration

Volume = 2 ÷ 5

= 0.4 mL

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Correct Answer is C

Explanation

Identify the infusion rate and drip factor

Infusion Rate: 100 mL/hr

Drip Factor: 10 gtt/mL

Convert the rate to drops per minute

Flow Rate (gtt/min) = (Volume × Drip Factor) ÷ Time (in minutes)

Flow Rate = (100 × 10) ÷ 60

Flow Rate = 1000 ÷ 60

Flow Rate = 16.67 gtt/min

Round to the nearest whole number

=17 gtt/min

A. 3 tablets B. 1 tablet C. 2 tablets D. 2.5 tablets

Correct Answer is C

Explanation

Identify the ordered dose and tablet strength

Ordered Dose: 5 mg

Tablet Strength: 2.5 mg per tablet

Calculate the number of tablets to administer

Number of Tablets = Ordered Dose ÷ Tablet Strength

Number of Tablets = 5 ÷ 2.5

= 2

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You have a vial labeled 5 mg/mL of medication for IM injection. The physician orders a 2 mg dose. How many mL will you administer?

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