Question

Please show work.

1. Ordered: Ticarcillin 1000 mg IV q 6 hours to be administered in a total of 50 ml of NSS and infused over 30 minutes.

a. The pharmacy sends a 1 gram vial of Ticarcillin in powdered form for reconstitution. Directions state: “add 4.2 ml of sterile water for injection and shake well. The resultant solution will yield a concentration of 200 mg/ml”. How many ml will the nurse draw up from the vial once reconstituted?

b. Once the nurse has drawn up the correct number of ml’s (answer to a) to equal the ordered dose (1000mg), this is added to NSS to achieve a total of 50 ml. If the tubing’s drip factor is 12 gtts/ml, how many gtt/min will be needed to administer this medication? (You know the total volume, the time and the drop factor).

2. A patient returns from the PACU with an IV solution of D5 ½ NSS infusing at 45 gtt/min. The tubing’s drop factor is 15 gtt/ml. How many ml/hr is this patient receiving?

3. The patient is ordered an IV solution D5 ¼ NSS at a rate of 105 ml/hr. The IV tubing has a drop factor of 10 gtts/ml. At how many gtt/min will the nurse regulate the infusion?

4. The patient is ordered 300 ml of PRBC’s (Packed red blood cells) for a low hemoglobin count. The infusion is ordered to run over a total of 2 hours. At how many ml/hr will the nurse set the IV pump?

5. The patient is ordered Lactated ringers solution 125 ml/hr for 4 hours. The tubing’s drip factor is 20gtts/ml. How many drops per minute will the nurse regulate the IV?

6. How long will it take to infuse 1 liter of IV solution if the IV infusion pump is set to deliver the solution at a rate of 115 ml/hr?

7. The pediatric patient has an order to infuse D5 ¼ NSS with 20 meq KCL at a rate of 65 ml/hr. Microdrip tubing is available. How many gtt/min will the IV infuse?

8. The pediatric patient weighs 46 lbs. Lactated Ringers is ordered at 20 ml/kg to run over 2 hours for this patient.

.a. How many ml/hr would this be?

b. How many gtt/min with a tubing with a drip factor of 10 gtt/ml?

9. A child is ordered Ampicillin 170 mg q 6 hours. She weighs 19 kg. The drug is prepared so that there are 250 mg/ml. To deliver the drug IV it must be further diluted so that there are 10 mg of the drug in 1 ml of IV solution. Safe dose range for Ampicillin is 100-200 mg/kg/24hr.

How much is the child receiving per day and is it safe? ____________________

What is the volume of the drug drawn up? ______________________

How much will you dilute the drug in prior to IV administration? _________________

How fast should the IV drip (microdrop 60 gtts/ml) to infuse the med over 20 minutes? __________________gtts/min

10. Andy’s IV aminophylline comes from the pharmacy in a concentration of 350mg/500ml of IV solution. Safe dose is 0.6mg/kg/hr. Iv the IV delivers 60gtt/ml, what is the maximum safe rate the IV should drip? Andy weighs 77 lbs and is age 10.

11. Order: Ticarcillin 1 gm IV q 6 hr for a severe respiratory infection. Medication to be infused over 90 minutes. The child is three years old and weighs 35 lbs. The pediatric safe dose range for IV Ticarcillin is 200-300 mg/kg/day. What is the safe dose range for this child per day and per dose?

a. Is the ordered dose safe?

b. If the Ticarcillin is supplied as 1 gm in 100 ml of solution and the tubing is microdrip, at what flow rate (gtts/min) will the nurse administer the medication?

12. Your patient is to receive Ampicillin 2 gm IV to run over 30 minutes. Ampicillin comes as a powder that requires reconstitution. Adding 7.5 ml of NSS results in a concentration of 250 mg/ml. How many ml will you draw up to administer the dose?

You mix the ampicillin in 50 ml of IV solution. At what rate will you regulate the IV with a drop factor of 15 gtts/ml?

13.The patient is to receive 1400 units of heparin every hour. If there are 25,000 units of heparin in 250 ml of IV solution, how many ml each hour should the patient receive?

Answer 1

1. Given

Order: Ticarcillin

Dose:1000mg

Route:IV

Frequency:hourly or 4 times a day

Volume:50ml

Time:30minutes

Drop factor:12gtt/min

a.Available:1gm vial (1000 mg/vial)

After reconstitution it is the concentration is 200 mg/ml

That is 200mg=1ml

Then 1000 mg=?? ml

Cross multiply and divide

=1000×1÷200

=1000÷200

=5

Ans: The nurse will draw 5ml after reconstitution

b. Flow rate= Total volume÷Time(min)×Drop factor

=50÷30×12

=1.66×12

=20

Ans: The medication has to be administered at 20 gtt/min

2.Given

Order:D5 1/2 NSS

Flow rate:45gtt/min

As in 1min: 45 drops is administered then for 60 min(1 hr)

=60×45/1

=2700 gtt or drops/hr

To convert drops to ml divide by 20

=2700÷20

=135 ml

Therefore the volume is 135 ml/hr

Ans:135ml/hr

3.Given

Order:D5 1/4 NSS

Flow rate:105ml/hr (105 ml/60minutes)

Drop factor:10gtt/ml

Flow rate: Volume (ml) ÷Time (min)×Drop factor

=105/60×10

=1.75×10

=17.5 or 18

Ans:The nurse should regulate the infusion at 18 gtt/min

Given

Order:PRBC

Volume:300ml

Time:2hr

Flow rate=Volume÷Time(hr)

=300/2

=150

Ans:The nurse will set the IV pump at 150ml/hr