Garo

The questions asks for the grams, not the mg. Since it says "50%", that means there are 50 grams in 100 ml. Remember "%" means grams "per hundred 100 mL". If the answer asked for mg you would just do a 1g/1000mg conversion.

Hi there, I'm pretty comfortable with my dosage calcs, but this one has me a bit confused. Here it is: You are to administer MgS04 IVPB at 1Gm. per hour. You are to add 20gm of MgS04 to 500mL D5LR. You have a 10mL vial of 50% MgS04 on hand. a. How much will you add? Ok, I know I will add 40ml, but the next part is where I get stuck b. At what rate will you infuse the IVPB? Next I figure I add the the 40 ml to the 500, resulting inthis equation: ml/hr = 540ml/20gx 1g/hr= 27ml/hr The reason I ask is that some in my class say you don't add the 40ml to the 500. This would result in a rate of 25ml/hr. Why would I not figure the 40 ml in the rate if that fluid is in fact is added to the bag?Am I missing something? Thanks so much, Garo