Question

Can you please show my the steps to solve these problems

NOTE: This is a sample dosage exam. Please show all your work on the exam! Credit will not be given if work is not shown. 1. Order states to give 500,000 units of Penicillin G. The Penicillin G is available in a vial o powdered drug containing 5,000,000 units. Directions accompanying the drug state: Add 18.2 mL of diluent to yield 250,000 units in 1 mL. How many mL should you withdraw from the vial after reconstituting the drug as directed? Answer: 2. You are to give 0.1 g of Mebaral (Mephobarbital). Available is 50 mg of Mebaral in tablets. How many tablets should be administered? Answer: 3. You are to give 0.2 g of a medicine PO. It comes in 50 mg scored tablets are available. How many tablets should be administered? Answer: 750 mg of a drug must be prepared. How many ml should be prepared if the medicine is labeled 100 mg in 1 mL? 4. Answer:

Answer 1

1. Ordered dose of Penicillin G is 500000 units .

Available vial of powdered penicillin is 5000000units.

Directions to dissolve is -add 18.2 ml of diluent to yeild 250000 units in 1ml

It means after adding 18.2 ml of diluent to the vial it will yield 250000 units in 1ml

The odered dose is 500000 units

After dissolving we will get 250000 units in 1ml

Then, for the odered dose 500000 units we need to take 2ml of dissolved preparation .

The answer is 2ml

2. Ordered dose of mebaral is 0.1gm

Available dose of mebaral is 50mg in one tablet = 0.05gm

To give 0.1 gm of mebaral we need to give 2 tablets of 0.05gm .

The answer is 2 tablets

3. Ordered dose of a medicine is 0.2gm per orally .

Available dose of the medicine is 50mg tablets = 0.05gm

To give a dose of 0.2 gm ,we need to give 4tablets of 0.05gm.

The answer is 4tablets .

4. Ordered dose of a drug is 750mg .

Available dose of medicine is 100 mg in 1ml

100mg of medicine is available in 1ml

1mg of medicine will be available in 1/100

Then 750mg of medicine will be available in 1/100 × 750 ml

= 7.5 ml of the syrup has to be given to give a dose of 750mg.

The answer is 7.5ml