I have this due on Tuesday which is my first day back. I feel as though I have forgotten all of my calculations. Here is the problem and how I did it. Please tell me if I did it correct or where I went wrong.Pt. weighs 170 pounds who requires a dopamine drip for a failing kidney. Protocol dictates that you start the drip at 5mcg/kg/min. You want to mix a drip that contains 400 mg of dopamine in your 250 ml bag of normal saline. How many ml/hr will you infuse?170/2.2=77.27=77.3 kg77.3 kg* 5mcg/min*60 min= 23190mcg/min=.057 round to .1*250ml=25ml/hr 400000mcg 400000 mcgNot sure if I did any of this correct. Help. 0 Likes
loveofrn, BSN, RN Specializes in MICU. Has 3 years experience. Aug 22, 2014 The answer is 14.5ml/hr 0 Likes
loveofrn, BSN, RN Specializes in MICU. Has 3 years experience. Aug 22, 2014 How did you get 0.57And again why did you round 0.057 to 0.1 0 Likes
loveofrn, BSN, RN Specializes in MICU. Has 3 years experience. Aug 22, 2014 Ok here is how I did mine(5mcg/kg/min)×(250ml/400000mcg)×(60min/hr)×(77.3kg)=14.5ml/hr 0 Likes
b747girl5 Aug 22, 2014 That was my original answer. I originally converted the 23190 mcg to mg then divided that by 400mg then multiply by 250ml23.19*250ml=14.49=14.5 400Is that the correct way? 0 Likes
b747girl5 Aug 22, 2014 I did not come out with 0.057. I did 23190 400000I converted the 400mg to mcg. Not sure why. 0 Likes
loveofrn, BSN, RN Specializes in MICU. Has 3 years experience. Aug 22, 2014 Always check your unit whenever you are doing dosage math. Also do you know how to use dimensional analysis 0 Likes
loveofrn, BSN, RN Specializes in MICU. Has 3 years experience. Aug 22, 2014 And your answer is correct 0 Likes
loveofrn, BSN, RN Specializes in MICU. Has 3 years experience. Aug 22, 2014 Yes you suppose to convert 400 mcg to mg to track your unit 0 Likes
b747girl5 Aug 22, 2014 It was 400 mg to mcg. By the way, I hate dimensional analysis. Just do. 0 Likes
loveofrn, BSN, RN Specializes in MICU. Has 3 years experience. Aug 22, 2014 Lol just make sure you know what you are doing. Just stick with the method that works for you 0 Likes
Esme12, ASN, BSN, RN Specializes in Critical Care, ED, Cath lab, CTPAC,Trauma. Has 41 years experience. Aug 22, 2014 my favorite site....DosageHelp.com - Helping Nursing Students Learn Dosage Calculations 0 Likes
pmabraham, BSN, RN Specializes in Hospice, Palliative Care. Has 3 years experience. Aug 22, 2014 Good day, b747girl5:Generally you don't want to round until the end to avoid mistakes.Thank you. 0 Likes
Kuriin, BSN, RN Specializes in Emergency. Has 5 years experience. Aug 22, 2014 Unless stated otherwise, you should do as pmabraham said and round only at the end. 0 Likes
edugas76 Aug 30, 2014 I did this170lbs = 77.3 kg5mcg/kg/min= 3865mcg/minwhich converts to 0.3865 mg/minthen 400 mg/ 250 ml = 0.3865 mg/x mland cross multiply x = 0.24 ml/ minmultiply by 60 to get 1 hour14.493 rounded to 14.5 ml/hr 0 Likes
black033 Sep 2, 2014 The answer is 14.5ml/hr.400mg=400,000 mcg170 lbs=77.3 kg(77.3 kg * 5 mcg/kg/min=387 mcg/min)(387 mcg/min * 60 min/hr=23,220 mcg/hr)(250 ml/400,000 mcg * 23,200 mcg/hr)=14.5 ml/hrHope the break down helps. 0 Likes