Guest guest Posted November 10, 2004 Report Share Posted November 10, 2004 Hi suzanne, i will try to solve this , hope it is correct and a textpert will reply soon too the is 2g of drug in 500 ml, therefore there is 2000mg in 500 ml the dose rate is 100 mg/hr. 2000mg 100mg ------------ = ----------- = 25ml 500ml x ml therefore 25ml/hr or500gtt/hr I am not really sure but am just trying Kamini kssb9091 <cly209@...> wrote: Hi, Here's another calculation I am having trouble with. 2 g of meds in a 500mL bag of NS. The dose rate is 100 mg/hr and the equipment is calibrated to 20 gtts/mL. What is the flow rate? Do I need to use the 2 g of meds and add it to the 500 mL bag? What do I start with? Please help, Suzanne Quote Link to comment Share on other sites More sharing options...
Guest guest Posted November 11, 2004 Report Share Posted November 11, 2004 I am still at work and will getto this problem later tonight however please use the tutorials in the mean time. Hint 2 grams = 2000 mg Respectfully, Jeanetta kssb9091 <cly209@...> wrote: Hi, Here's another calculation I am having trouble with. 2 g of meds in a 500mL bag of NS. The dose rate is 100 mg/hr and the equipment is calibrated to 20 gtts/mL. What is the flow rate? Do I need to use the 2 g of meds and add it to the 500 mL bag? What do I start with? Please help, Suzanne Quote Link to comment Share on other sites More sharing options...
Guest guest Posted November 11, 2004 Report Share Posted November 11, 2004 Dear Suzanne, I like to use the 'string' conversion method for this: I first turn 2gm/500ml upside down and recall that 2 gm = 2000 mg: 500ml/2000mg X 100mg/1hr X 20 gtts/1ml X 1 hr / 60 min OR perhaps this may look easier. I have to place " ... " between numbers or else it runs together during a post. (it is an HTML thing/problem). 500 ml.... 100 mg.. 20 gtts... 1 hr -------- X-------X----------X-------- 2000 mg....1 hr.....1 ml.......60 min Here mg, hr and ml units canel out. Leaving gtt/min The Flow Rate is : 8.33 gtts/min I hope this helps you out. There are Flow rate Tutorials in my File section. Respectfully, Jeanetta Mastron CPhT BS Chemistry Founder/Owner > > Hi, > Here's another calculation I am having trouble with. > 2 g of meds in a 500mL bag of NS. The dose rate is 100 mg/hr and > the equipment is calibrated to 20 gtts/mL. What is the flow rate? > Do I need to use the 2 g of meds and add it to the 500 mL bag? > What do I start with? > Please help, > Suzanne Quote Link to comment Share on other sites More sharing options...
Guest guest Posted November 11, 2004 Report Share Posted November 11, 2004 Dear Kamini, Good job, but Please check my last post regarding this. Your answer is 500 ml/hr. My answer is 8.33 gtts/min. If you change your answer to gtts / min, you will find our answers to be equal: 500 ml/hr X 1 hr /60 min = 8.33 gtts/min You nevr know what the multiple choice could be on PTCB exam. However they have been known to give the something like the following choices: a. 8.33 ml/min b. 8.33 gtts/min c. 50 ml/hr d. 500 ml/min Where ONLY 'a. 8.33 gtts/min' is correct. They could also do this: a. 500 ml/hr b. 8.33 gtts/min c. 8.33 gtts/hr d. 500 ml/min Where the only correct answer is " a. 500 ml/hr " Respectfully, Jeanetta Mastron CPhT BS Chemistry Founder/Owner > > Hi, > Here's another calculation I am having trouble with. > 2 g of meds in a 500mL bag of NS. The dose rate is 100 mg/hr and > the equipment is calibrated to 20 gtts/mL. What is the flow rate? > Do I need to use the 2 g of meds and add it to the 500 mL bag? > What do I start with? > Please help, > Suzanne > > > > > Quote Link to comment Share on other sites More sharing options...
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