Medication Calculation

NeecyBSN_RN · Feb 20, 2010

BTW, this is NOT HOMEWORK! These are questions that were on a quiz that I have already TURNED IN! I was stuck on these two problems for a while and am trying to make sure I did them right :)!

morte, LPN, LVN · Feb 20, 2010

i get the same # in the second ex.

in the first one, you want mg/Kg/per day

so you need to convert the weight into kilograms from pounds....and multiply for the two end points of the range...

jrsmrs · Feb 20, 2010

1. recommended dosage: 200 - 300 mg/kg/day divided into 4-6 doses

patient weight: 175 lbs

calculate the recommended dosage range for 24 hr for a 175 lb patient.

forget that this is math and just think logically- the dosage for one day is an amount based on the pt's weight.

your 175lb pt is about 79.5 kg (175lbs/2.2 lbs in a kg= 79.5kg).

in one day, s/he should have 200-300mg for every kg they weigh.

200*79.5= 15900mg/day

300*79.5= 23850mg/day

so the range would be 15900-23850mg/day divided into 4-6 doses.

2. drop factor: 10 gtt/ml

infusion rate: 28 gtt/min

infusion time: 8 hours

what is the total fluid volume infused?

- i got 1344 ml, but am not sure.

10 drops make one ml, 28 drops/min... that equals 2.8ml/min

there are 480 mins in 8 hrs and they're getting 2.8ml every minute.

480mins*2.8ml per minute= 1344ml.

NeecyBSN_RN · Feb 21, 2010

Thanks you guys I was nervous for a minute there. I was afraid I took too long answering these questions and somehow screwed them up for the first one I used dimensional analysis and got nervous when I saw those high numbers!

200 mg/kg/day x 175 lbs X 1 kg/2.2 lbs = 15,909.09 or 15909 mg/day

300 mg/kg/day x 175 lbs x 1 kg/2.2 lbs = 23,863.64 or 23,864 mg/day

15,909 -23,864 mg/day divided into 4-6 doses...would this be acceptable as an answer?

morte, LPN, LVN · Feb 21, 2010

Thanks you guys I was nervous for a minute there. I was afraid I took too long answering these questions and somehow screwed them up for the first one I used dimensional analysis and got nervous when I saw those high numbers!
200 mg/kg/day x 175 lbs X 1 kg/2.2 lbs = 15,909.09 or 15909 mg/day
300 mg/kg/day x 175 lbs x 1 kg/2.2 lbs = 23,863.64 or 23,864 mg/day
15,909 -23,864 mg/day divided into 4-6 doses...would this be acceptable as an answer?

dont need that part.....always look to what the question is asking....