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In: Nursing

The physician orders: Magnesium 8 gms loading dose to infuse over 30 minutes at 0500.

The physician orders:  Magnesium 8 gms loading dose to infuse over 30 minutes at 0500.  Then infuse of maintenance dose of 2 gram /hr.  The pharmacy sends 80 Gms in 1000 mL of LR.  

            1.  What would the nurse set the pump for the loading dose at 5 Am?

            2.   What would the nurse set the pump for the maintenance dose?

Solutions

Expert Solution

1. Dose available = 80 gms in 1000 mL

desired dosage= 8 gms

formula for calcualting a medication dosage= desired dose/ dose available * quantity available

8/80*1000=100 mL , volume to be infused over 30 minutes

Standard macrodrip IV drip administration set have drop factor= 15gtt

For calculating the flow rate formula= Total volume to be infused/time in minutes* drop factor

100/30*15= 50 drops/minute

2. Calculate the amount of medication per mL

available dose= 80gm/1000ml,

1mL= 80/1000= 0.08 g is the concentration per mL

To calcualte mililiter per hour or infusion rate= Dose per hour desired/ concentration per ml

Dose per hour desired= 2g/Hr

2/0.08= 25mL/Hr is the flow rate that has to be set on the infusion pump

Nightingale answered 2 years ago
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