Hey, So I'm new to the forums as far as posting but I always see good advice so I figured I'd take advantage of it. This drip rate problem was on a recent worksheet and I am not coming up with the same answer as what the instructor says. To calculate the problem I used what was ordered ( the 1 gram every 6 hours to infuse for 40 minutes ) for the instructors answer it appears she used the what came prepared ( the 100ml for 40 minutes ) Here is the problem... Let me know how you would solve it and why? Order: ampicillin 1 gram every 6 hours IV piggyback to infuse over 40 minutes. The ampicillin comes prepared in 100 ml D5W. Your patient has an IV of D5W infusing at 125ml/hr. drop factor of 20. Calculate the drip rate (gtts/min) for the ampicillin infusion.