# PTCB Pharmacy Calculations #5

#### Mycostatin 400,000 units po four times a day is prescribed by the doctor. After reconstitution, the medication is administered at 100,000 units per milliliter. In one dose, how many milliliters will the nurse administer?

Correct!
Wrong!

The correct answer:

4 ml

#### Over the course of 8 hours, give 1L NS. 15 gtt/ml drop factor ______ gtt/min flow rate

Correct!
Wrong!

The correct answer:

31 gtt/min

#### [Morphine Sulfate 15 mg/ml] For myocardial infarction, your patient requires morphine gr 1/6 subcutaneous stat. How many milliliters are you going to use?

Correct!
Wrong!

Explanation:

Simply divide and multiply to convert grains to milligrams.

#### [Dilaudid-HP 10 mg/ml] The doctor prescribes Dilaudid gr 1/60 IV every four hours prn. In a day, how many milliliters will be administered?

Correct!
Wrong!

The correct answer:

0.6 ml

#### [Scopolamine Hydrobromide Injection, USP 0.4 mg/ml] At 0700, the doctor prescribes scopolamine gr 1/150 subcutaneous. How much liquid will be administered?

Correct!
Wrong!

The correct answer:

1 ml

#### D5W 1000 mL IV every 6 hours If an infusion pump is used, what is the flowrate? ______ ml/hr

Correct!
Wrong!

The correct answer:

167 ml/hr

#### Rx: Tussionex # 12 oz. Sig: ii tsp qd prn for cough 6d. How long will this medication last?

Correct!
Wrong!

The correct answer:

6 days

#### How many milligrams of Vancomycin are there in 1.25 g of IV solution per 250 mL?

Correct!
Wrong!

The correct answer:

1250 mg

#### As a ratio strength, write 2g of active ingredient in 250 ml of solution.

Correct!
Wrong!

The correct answer:

1:125

#### To make 4L of a 1:2000 w/v solution, how much (1:400 w/v) stock solution should be used?

Correct!
Wrong!

The correct answer:

800 ml

#### A doctor orders tetracycline suspension for a patient to take 2 teaspoonfuls four times a day for four days, then 1 teaspoonful four times a day for two days. How many milliliters of the suspension should be delivered to meet the dosing regimen's requirements?

Correct!
Wrong!

The correct answer:

200 ml