Guest guest Posted August 8, 2006 Report Share Posted August 8, 2006 I think there's some missing information or incorrect info on the questions... Please double check. Going on with what I THINK the intended questions were: > 1) An infusion cassette of Morphine sulfate is 50mg/100ml PCA. In addition to > the baseline dose 2mg/hr the patient receives bolus 1 mg every 15 > minutes. What is the total volume of solution the patient should > receive in two hours? 50mg/100ml = 0.5mg/ml The dose is 2mg/hr or 4mg over 2 hours 0.5mg/ml=4mg/x X=8ml Now figure your bolus doses. 1mg every 15 min. or 8 mg during a 2 hour periond 0.5mg/1ml= 8mg/X X=16ml 8ml (cont. rate) + 16ml (bolus doses)= 24mls received/infused over a 2 hour time frame. > 2) A 132 lb patient receives 4mcg/kg/MIN of dopamine in a 1/2 hour > interval. If the IV solution contains 800mg of dopamine in 250ml D5W, > how much dopamine will the patient receive? 132/2.2= 60kg 4mcg*60kg*30min = 7200mcg or 2.25ml of 800000/250ml=7200/X X=2.25 Dora group Mod Tidbit: MgS04,MS04,MS are all on ISMP's and JACHO's Abreviation DO NOT USE list > > 1) An infusion cassette of MgSo4 is 50mg/100ml PCA. In addition to > the baseline dose 2mg/hr the patient receives bolus 1 mg every 15 > minutes. What is the total volume of solution the patient should > receive in two hours? > > 2) A 132 lb patient receives 4mcg/kg of dopamine in a 1/2 hour > interval. If the IV solution contains 800mg of dopamine in 250ml D5W, > how much dopamine will the patient receive? > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted August 8, 2006 Report Share Posted August 8, 2006 > > > > 1) An infusion cassette of MgSo4 is 50mg/100ml PCA. In addition to > > the baseline dose 2mg/hr the patient receives bolus 1 mg every 15 > > minutes. What is the total volume of solution the patient should > > receive in two hours? > > > > 2) A 132 lb patient receives 4mcg/kg of dopamine in a 1/2 hour > > interval. If the IV solution contains 800mg of dopamine in 250ml > D5W, > > how much dopamine will the patient receive? > > > The questions came from " Certification Review For Pharmacy Technicians " by Noah Reifman, Seventh Edition The answer to the first question is the same as the answer in the book, but for the #2 question the book shows possible answers: a) 50mcg 75mcg c) 0.1mg d) 0.25mg With b)75mcg being the possible answer. Also thank you the Answer to #1 question. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted August 8, 2006 Report Share Posted August 8, 2006 Dear and Dora, We did these in our class today (3pm Ca time). My students came up with the SAME answer for #1. We did however work it out a bit differently (I think anyway, because I only skimmed the way Dora did, not study it in detail, since our answers matched). However we differed on # 2. " We " got 0.075 ml for Question # 2. In the process I made a tutorial out of it. I plan on uploading late tonight (12MN or so) when I get home from work. But it would be good for any other instructor/tech/texpert to check it before I upload it. It is not necessary to know the 'rate' or a time factor in the problem # 2. Only how much drug is equal to the 'dosing' of the drug based upon pt wt. To give a further example the amount of drug would be the same if the interval was 8 hours or 1/2 hour. An interval of time passes with out regard to how much drug one is getting per minute or hour. 132lb/2.2lb/kg = 60kg 4mcg/kg x 60kg = 240 mcg per interval 240 mcg given over a period of time of 0.5 hr The question asked 'how much dopamine...' but it did not specify the units. So I do not know the author of the questions intentions. Therefore I shall show three different possible units. The more likely is in 'mls'. 240 mcg dopamine in 1/2 hour equals 0.24 mg dopamine in 1/2 hour equals 0.075ml dopamine in 1/2 hour The latter is calculated using a ratio proportion with the concentration or availability of 800 mg/250 ml and the 0.24 mg of dopamine in 1/2 hour. 800 mg-----0.24 mg ------- = ------- 250 ml-----X ml 250 x 0.24 ---------- = X ml 800 0.075 ml = X ml Let me know what you think Dora and/or anyone else. Respectfully, Jeanetta Mastron CPhT BS Pharm Tech Educator Founder/Owner > > > > > > 1) An infusion cassette of MgSo4 is 50mg/100ml PCA. In > addition to > > > the baseline dose 2mg/hr the patient receives bolus 1 mg every > 15 > > > minutes. What is the total volume of solution the patient > should > > > receive in two hours? > > > > > > 2) A 132 lb patient receives 4mcg/kg of dopamine in a 1/2 hour > > > interval. If the IV solution contains 800mg of dopamine in > 250ml > > D5W, > > > how much dopamine will the patient receive? > > > > > > > > > The questions came from " Certification Review For Pharmacy > Technicians " by Noah Reifman, Seventh Edition > > The answer to the first question is the same as the answer in the > book, but for the #2 question the book shows possible answers: > a) 50mcg > 75mcg > c) 0.1mg > d) 0.25mg > > With b)75mcg being the possible answer. Also thank you the Answer to > #1 question. > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted August 8, 2006 Report Share Posted August 8, 2006 Dear Dora and , I am still at school and I waited for the 'Doc' who teaches our Clinical Research program said that we have two different problems and the one originally posted by is answered correctly by the method that I have shown. He did not have time to check the problem that Dora answered with shows " per MIN " . But said we would have to take the 'time' into consideration if that were the case. Hope this helps... Now does your study book show an answer? Respectfully, Jeanetta Mastron CPhT BS Founder/Owner > > > > > > > > 1) An infusion cassette of MgSo4 is 50mg/100ml PCA. In > > addition to > > > > the baseline dose 2mg/hr the patient receives bolus 1 mg every > > 15 > > > > minutes. What is the total volume of solution the patient > > should > > > > receive in two hours? > > > > > > > > 2) A 132 lb patient receives 4mcg/kg of dopamine in a 1/2 > hour > > > > interval. If the IV solution contains 800mg of dopamine in > > 250ml > > > D5W, > > > > how much dopamine will the patient receive? > > > > > > > > > > > > > > > The questions came from " Certification Review For Pharmacy > > Technicians " by Noah Reifman, Seventh Edition > > > > The answer to the first question is the same as the answer in the > > book, but for the #2 question the book shows possible answers: > > a) 50mcg > > 75mcg > > c) 0.1mg > > d) 0.25mg > > > > With b)75mcg being the possible answer. Also thank you the Answer > to > > #1 question. > > > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted August 9, 2006 Report Share Posted August 9, 2006 Hi J- I think #2 is a very poorly worded and inaccurate question. Standard dopamine dosing is mcg/kg/min. According to the Reifman's " right " answer of 75mcg, your response would also be incorrect---though I see how you got there with the information provided. I initially solved it the same way your class did, but thought about insignificant volume (0.075ml)---that's not even enough volume to get into the drip chamber of the tube set let alone have any therapeutic effect on a 60kg person! Sooo I tried to " fix " it using a " real life " dopamine dosing protocol. Dora Quote Link to comment Share on other sites More sharing options...
Guest guest Posted August 9, 2006 Report Share Posted August 9, 2006 > > > > > > > > > > 1) An infusion cassette of MgSo4 is 50mg/100ml PCA. In > > > addition to > > > > > the baseline dose 2mg/hr the patient receives bolus 1 mg > every > > > 15 > > > > > minutes. What is the total volume of solution the patient > > > should > > > > > receive in two hours? > > > > > > > > > > 2) A 132 lb patient receives 4mcg/kg of dopamine in a 1/2 > > hour > > > > > interval. If the IV solution contains 800mg of dopamine in > > > 250ml > > > > D5W, > > > > > how much dopamine will the patient receive? > > > > > > > > > > > > > > > > > > > > > The questions came from " Certification Review For Pharmacy > > > Technicians " by Noah Reifman, Seventh Edition > > > > > > The answer to the first question is the same as the answer in > the > > > book, but for the #2 question the book shows possible answers: > > > a) 50mcg > > > 75mcg > > > c) 0.1mg > > > d) 0.25mg > > > > > > With b)75mcg being the possible answer. Also thank you the > Answer > > to > > > #1 question. > > > > > > The answer in the book is b)75mcg. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted October 28, 2010 Report Share Posted October 28, 2010 Dear Kendra, Yes well first we must understand percent. See my tutorials for a review if you need it. Then we must know that NS = 1 normal saline or 0.9% NaCl, which means there can be a 1/2 normal saline or 0.45% NaCl 1/2 NS = 0.45% NaCl 0.45% = 0.45 gm/100ml of solution But we have 500 ml, not 100 ml So by logice, we have 5 times this amount of 0.45gm which is equal to 2.25 gm or C. 2.25gm Mathematically: We an use a ratio/proportion to do this: 0.45 gm ------X gm ------------ = --------- 100ml---------500ml 0.45 x 500 / 100 = 2.25gm C. 2.25 gm You are welcome! Hope this helped. Jeanetta Mastron CPhT BS Founder/Owner > > > Here is a math problem that I found on the Facebook Tech Lectures group: > > Tech Lectures Review Question No. 35: How much NaCl is in the following IV Bag: D5 1/2 NS 500ml > a. 0.9 grams > b.1.25 grams > c. 2.25 grams > d. 9 grams > > I'm not sure how he got the numbers to solve this one too. I think it's also because I don't understand what D5 1/2 NS means. > > > > Thank you! > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted October 29, 2010 Report Share Posted October 29, 2010 Wow that makes sense now! Thank you so much. So, just to make it clear. NS is always 0.9%NaCl. Thank you again! - Kendra > > > > > > Here is a math problem that I found on the Facebook Tech Lectures group: > > > > Tech Lectures Review Question No. 35: How much NaCl is in the following IV Bag: D5 1/2 NS 500ml > > a. 0.9 grams > > b.1.25 grams > > c. 2.25 grams > > d. 9 grams > > > > I'm not sure how he got the numbers to solve this one too. I think it's also because I don't understand what D5 1/2 NS means. > > > > > > > > Thank you! > > > Quote Link to comment Share on other sites More sharing options...
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