Question

1. A pregnant woman with severe cardiac decompensation is hospitalized and requires Digoxin therapy to treat heart failure. The order is for 0.25 mg Digoxin IV every A.M. You have on hand Digoxin 0.5 mg/2 ml. How many ml. will you give? (Round the final answer to the nearest whole number).

2. The nurse is preparing a Phytonadione injection for a newborn. The physician prescribed 1 mg to be given IM. The medication on hand is 2 mg/1 ml. How many ml should the nurse inject? (Round the final answer to one decimal place.)

3. Mrs. Z. is admitted with hyperemesis gravidarum and is dehydrated. The physician prescribed 1000 ml 5% Dextrose in Lactated Ringers to be infused over 6 hours. How will the IV pump be set to deliver the prescribed amount? (Round the final answer to the nearest whole ml.)

4. The neonatologist prescribed 175 mg of Ampicillin to be given IV to a newborn whose mother had a Group B Strep infection. The drug is available as a powder in a vial containing 250 mg Ampicillin. The Pharmacy instructions state to dilute the vial with 2.5 ml sterile water and then 5.8 mL normal saline for a total volume of 8.3 ml. The resulting solution contains 30 mg/ml of Ampicillin. How many ml will be infused to provide 175 mg of Ampicillin? (Round the final answer to one decimal place.)

5. A postpartum non-breastfeeding mother is prescribed IV Metronidazole (Flagyl). The dose prescribed is 500 mg. to be given in an IV piggyback. The drug is available 500 mg/100 ml. The drug is to be given over 60 minutes. How will the nurse set the IV pump to provide the prescribed dose? (Round the final answer to the nearest whole ml.)

Answer 1

1. Order dose - 0.25 mg Digoxin IV every A.M. to treat heart failure

Available dose Digoxin 0.5 mg/2 ml. That means 0.25 mg/ml

0.5mg = 2ml = 0.25 mg/ml

Answer - The nurse will give 1 ml of Digoxin.

2.

Order dose - 1 mg, IM.

medication on hand is 2 mg/1 ml.

1mg = 2mg/ml = 0.5m/

Answer - The nurse will inject 0.5 ml.

3.

Order dose - 1000 ml 5% Dextrose in Lactated Ringers to be infused over 6 hours.

1,000ml = 6h = 166.6ml/h

That means 167 ml/h

Answer - The IV pump will be set at 167 ml per hour.

4.

Order dose - 175 mg of Ampicillin to be given IV.

The drug is available as a powder in a vial containing 250 mg Ampicillin. The Pharmacy instructions state to dilute the vial with 2.5 ml sterile water and then 5.8 mL normal saline for a total volume of 8.3 ml. The resulting solution contains 30 mg/ml of Ampicillin.

So, now the available drug is 30 mg/ml

175mg = 30mg/ml = 5.8m/

Answer - The nurse will give 5.8ml to provide 175 mg of Ampicillin.

5.

Order dose - 500 mg to be given in an IV piggyback.

The drug is available 500 mg/100 ml.

That means 100 ml to be given in 60 minutes.

Answer - The nurse will set the IV pump at 100 ml per hour.