Question

A client is admitted with pre-eclampsia. A magnesium sulfate infusion is ordered 40 grams in 1000 mL of D5W. The bolus is 4 grams over 30 minutes, followed by a maintenance rate of 0.5 grams/hour. How many mL/hr is the maintenance dose?

2). A client is prescribed oxytocin 2 mU/min. The pharmacy delivers 30 units in 500 mL. How many mL/hr should the nurse administer to the client? Round answer to the nearest whole number.

Answer 1

Question number1:

What we have is 40 mg magnesium sulphate in 1000ml D5w.

So,1gm magnesium sulphate =? ml

ie,1000÷40

=25 ml.

So 1gm magnesium sulphate in 25ml D5W.

Prescribed maintenance dose is 0.5gm/hour

So the fluid rate will be 12.5ml/hour

Question no 2:

1 unit =1000mili units

What the pharmacy delivers is 30units in 500 ml.

ie,30×1000milliunits in 500 ml.

So find out 1ml=? milliunit

ie,30000÷500

=60milliunits .

Prescribed dose is 2milli units per minute.so per hourly 2milliunits ×60

ie,120milliunits per hour.

So the fluid rate should be 2ml per hour.