Question

Use the following paragraph to answer :

The order is for cimetidine (Tagamet) 150 mg IV q8h, The pharmacy sends an 8 mL multi-dose vial with a concentration of 2mL=250 mg, Instructions: Add cimetidine into a 50 mL IV bag of normal saline and infuse over 15 minutes using a pump:

- volume of cimetidine should be withdrawn from the via: ____ml

- The IV pump should be set at: ___ml/hr

- How many mg of cimetidine will the patient receive per day: _____

Answer 1

Order dose Cimetidine(Tagamet) 150 mg IV q8h

Available 8 ml of the vial with a concentration of 250 mg/2 ml

No.1.

So the nurse need

Answer - The nurse will withdraw 1.2 ml from the vial.

No.2.

We have to add cimetidine into a 50 mL IV bag of normal saline and infuse over 15 minutes using a pump.

We know 1 hour = 60 minutes

So,

Answer - The IV pump should be set at 200 ml per hour.

No.3.

We have the order dose of 150 mg Cimetidine to provide IV q8h

So the patient need,

Answer - The patient will receive 450 mg of Cimetidine per day.