Question

A patient with an infection has an order for Timentin 3.1 g 26 h IVPB. The Timentin is dissolved in 100 mL of D W and is to be infused over 1 hour. The tubing drop factor is 20 gtt/mL. At what rate, in drops per minute, should the IVPB be programmed?

Answer 1

1. Order dose Timentin 3.1 gm every 6 hours.

The Timentin is dissolved in 100 ml of D5W and to be infused over 1 hour.

The drop factor is 2 gtt/ml means 20 drops in 1ml

The formula is  $(Total Volume in ml\div Time in Min)\times drop factor$

So, $(100ml\div 60 min)\times 20 = 33.33 drops$ /min

The IVBP should program in 33drops per minute

2.

Order dose is insulin IV at a rate of 8units per hour.

Concentration is 50 units in 100 ml of 0.9% ns

It means 1 unit is in 2ml ($100ml\div 50units = 2ml$)

Order rate was 8 units per hour So, $8 units \times 2ml = 16 ml$

Then the pump rate will be 16ml per hour