Question

1.A physician orders an increase in a magnesium sulfate drip to 2g/h for a patient in labor. The medication has a concentration of 10g magnesium sulfate in 200 ml of lactated ringer's solution. The IV pump should be programmed for how many millimeters per hour? Round answer to nearest whole number.

A) 42ml/hr

B) 400ml/hr

C)40ml/hr

D)0.40 ml/hr

2.A physician writes orders to increase a magnesium sulfate drip to 2g/h for a patient in labor. The medication has a concentration of 20g magnesium sulfate in 100ml of lactated ringer's solution. The IV pump should be programmed for how many millimeters per hour? Round answer to nearest whole number

C) 100ml/hr

D) 0.10 ml/hr

C) 11ml/hr

d) 10ml/hr

3. A physician writes orders to increase a magnesium sulfate drip to 1g/h for a patient in labor. The medication has a concentration of 10g magnesium sulfate in 200ml of lactated ringer's solution. The IV pump should be programmed for how many millimeters per hour? round answer to nearest whole number

A) 28ml/hr

B) 200ml/hr

C) 20ml/hr

d) 0.20ml/hr

Answer 1

1

This is a simple question if we know basic mathematics.
It is given that 10 gram of magnesium sulphate is present in 200ml of lactated ringer's solution. So 1 gram of magnesium sulfate will be present in 20 ml of lactated ringer solution. ie 200/ 10=20 ml.
So 2 gram of magnesium sulphate will be present in 40 ml of lactated ringer solution.
The rate at which you have to give magnesium sulphate is 2 gram per hr which is equal to 40 ml of solution per hour.
10 g Mgso4 >>>>> 200 ml of solution
1 g mgso4 >>>>>20 ml of solution
2 g mgso4 >>>>> 40 ml of solution

So here answer is option C. 40 ml/hr

You can do remaining questions is the same way. Try to do it yourself and make sure if it is true by seeing the answer given below.

2.

20 g mgso4 >>>100 ml solution

1 g mgso4 >>> 100/20= 5 ml solution

2g mgso4 >>> 2*5 = 10 ml solution

answer is option d

3.

10 g mgso4 >>>200 ml solution

1 g >>>>>>>20 ml solution

Answer is option c