Pharmacy Tech Math Questions.?

Question

A 2-g vial of cefazolin in its dry powder form occupies 2.1 ml and the total volume of its reconstituted solution is 15 ml

1) What amount of sterile water is needed to prepare the solution?

2) If the doctor orders cefaziolin 1 g IVPB over 30 min, what is the volume of fluid needed to obtain 1 g?

3) If the doctor order the cefazolin 1 g IVPB to be mixed in 100 ml DSW, what is the flow rate in Millaliters per minute?

I NEED TO KNOW THE CORRECT ANSWERS!!!

PLEASE DONT ANSWER IF YOU DO NOT KNOW THE CORRECT ANSWER!!!

Answer 1

1: You wouldn't measure a dry powder in milliliters. You can't really know exactly how much water to add unless the know the mls the dissolved drug take up. You could add 10mls then QS up to 15 mls once it dissolved in the orginal 10mls.

2 If the total volume of 2 grams is 15mls. Then 7.5 mls added to 50 mls of NS or D5W would be the answer.

3. If the total volume is 100 mls then 100ml/60 minutes= 1.66ml/min. Of course, you would set up the pump in mls/hr which in this case is 100ml/hr...duh. If the total volume is 107.5 mls then 1.8mls/min.

Answer 2

1. 12.9 ml

2. 7.5 ml of the reconstituted solution mentioned in question 1

3. ~3.5 ml/min ((100ml DWS + 7.5ml solution)/30 minutes)

Answer 3

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