chamrob

2ndyearstudent thanks for taking time to respond!!! MUCH Appreciated!!! OK -- We have the same thought process on D5W = 5% Dextrose in H20 = 5 g/100mL to that I add = 5000mg/mL and then divide by 2 = 2500mg the patient is receiving (since the requested answer is in mg)??? How would you work it out? This one is just not clicking with me...

hi -- i am stumped on a few of my practice dosage calcs. can you please clarify if i am setting up correctly or show me the correct way?? order: d5w at 50 ml/hr how much dextrose is the patient getting per hour? i know that d5w is 5g of dextrose and 5 g = 5000 mg/ml from there i am not sure, but have worked it 5000 mg/50ml per hour = 100 mg do i need to incorporate the 1000 ml/bag into the equation? if so, how? also, when calculating ml/hr, can you verify i am rounding correctly?? some sample problems i have are: vancomycin 625mg/50ml over 1-1/2 hours = 33.33 = 33 ml/hr order: rocephin 500 mg im have: rocephin powder instructions state to dilute with 2ml lidocaine to yield a concentration of 325 mg/ml i worked it out as: 500 mg / 325 mg x 1 ml = 1.538 = 1.5 ml order: diflucan 6mg/kg/day on the first day. then 3 mg/kg/day days 2-14. supply:diflucan 10mg/ml child's weight: 7.74 kg how many millileters would you give on day 1? i worked it out as: (6mg x 7.4kg x 1ml) / (10mg x 1 day) = 4.644ml = 4.64ml (rounded to hundredths because it is a child) thank you!!

anonymousstudent -- thanks for taking time to help me -- that makes sense -- and simplified!! i knew i was working it wrong... i can do that ....

I think I posted in wrong area first time... sorry!! Hi -- I have been struggling since Friday to study for Dosage Calc in the AM and find probs matching the sample we were given. We are using the Pickar 8th Editon, only PCA reference is on page 369. The online site practice questions contained nothing and have been working them from Chapter 15 - 17. My instructor just said she does not know the answer to the sample and I am lost on it.... This is exactly what she gave us to study : Patient weighs XXX kg Begin on XXX med PCA 10 mg/mL Rate of 8 mg (she put 8 in parenthesis) q 15 min with lockout of 24 mg/hr Bag has 150 mL Started at 0800, if patient receives 3 doses/hr how long will bag last? I have worked it: 150mL / 10mg/mL = 15 mg/mL 8 mg / 15 mg = 0.533 = 0.5 mg/mL q 15 min x 3doses/hr = You see -- I am confusing myself horribly .... I usually make 100% on these Dosage Calc Quizzes -- I need every point I can get -- Thanks in advance for your help - I am truely stumped and frustrated -- and too tired ... thinking I am over thinking it....

Hi -- I have been struggling since Friday to study for Dosage Calc in the AM and find probs matching the sample we were given. We are using the Pickar 8th Editon, only PCA reference is on page 369. The online site practice questions contained nothing and have been working them from Chapter 15 - 17. My instructor just said she does not know the answer to the sample and I am lost on it.... This is exactly what she gave us to study: Patient weighs XXX kg Begin on XXX med PCA 10 mg/mL Rate of __ mg (she put 8 in parenthesis) q 15 min with lockout of 24 mg/hr Bag has 150 mL Started at 0800, if patient receives 3 doses/hr how long will bag last? I have worked it: 150mL / 10mg/mL = 15 mg/mL 8 mg / 15 mg = 0.533 = 0.5 mg/mL q 15 min x 3doses/hr = You see -- I am confusing myself horribly.... I usually make 100% on these Dosage Calc Quizzes -- I need every point I can get -- Thanks in advance for your help - I am truely stumped... thinking I am over thinking it....