Question

1. The pediatrician order is Phenobarbital 2mg/kg of the body weight: the patient weighs 50 lbs. What is the dose of Phenobarbital should the nurse give to the patient?

2. Mr. jerdran is now receiving 2500 ml of intravenous fluid every 24 hours. How many milliliters of intravenous fluid should the nurse plan to give every 8 hours?

3. The patient is on continuous heparin therapy for thrombophlebitis. The IV contains 15,000 units of heparin in 500 cc of D5W to be infused in 12 hours. How many units of heparin per hour is the patient receiving?

4. The order is penicillin 50,000 units. The vial reads penicillin 500,000 units. Add 4.3 to yield 5 ml. How many ml of Penicillin to be given to the patient?

Answer 1

1.Given

Order:Phenobarbitol

Weight:50lbs (0.454*50=22.7kg)

Dose :2mg/kg

When 1kg=2mg

Then 22.7kg=??mg

Cross multiply and divide

=22.7*2/1

=22.7*2

=45.4mg

Ans:The nurse should administer 45.4mg to the patient

2.Given

Order: intravenous fluid

Volume :2500ml

Time:24hr

If 24hr=2500ml

Then 8hr=??ml

Cross multiply and divide

=8*2500/24

=20,000/24

=833.3 or 833

Ans: The nurse should plan to five 833ml every 8 hours

3.Given

Order:Heparin

Time:12hours

Available :15000 units/500ml of D5W

To calculate the units transfused in one hour

Divide the total unit by 12

=15,000/12

=1250

Ans: The patient is receiving 1250 units per hour

4.Given

Order : Penicillin

Dose :50,000 units

Available :500,000 units

After addition of diluent the volume of solution is 5ml (500,000 units=5ml)

When 500,000units=5ml

Then 50,000 units=??ml

Cross multiply and divide

=50,000*5/500,000

=250,000/500,000

=0.5

Ans:0.5ml of penicillin has to be given to the patient.