Question


Dec 23, '07Specialty: 6 year(s) of experience in critical care and LTC ; From: US ; Joined: Oct '05; Posts: 223; Likes: 26you have to change the 750 bc you cannot change what you have on hand.


Dec 23, '07Occupation: chillin at home Joined: Jul '07; Posts: 503; Likes: 174Quote from mp17change the milligrams to grams becuase you cannot change what you have on hand. so change the 750 mg to gramsHi, everyone
I have a math question, If you have 750mg ordered q 4 hours and available 1gram per 50ml, how do you know which to change, the mg or grams? 
Dec 23, '07Occupation: Wound Care RN Specialty: 5 year(s) of experience in Wound Care, LTC, SubAcute, Vents ; From: US ; Joined: Sep '07; Posts: 1,623; Likes: 1,256Quote from jjtyou have to change the 750 bc you cannot change what you have on hand.Quote from peridotgirlchange the milligrams to grams becuase you cannot change what you have on hand. so change the 750 mg to grams
not really. i would rather change the gram to mg. it is much easier to work with whole numbers than decimals. plus, in this problem you will be administering meds in ml not mg, so yes you can definitely change the grams to mg because what you have on hand is in ml not grams.
for example, this is how i would do this
1. convert 1 g to 1000 mg
2. then i would do the ratio and proportion
= (750 mg / 1000 mg) x 50 ml
= (3/4) x 50 ml
= (3/2) x 25 ml
= 75/2
= 37.5 ml (this is how much you would give)
there is nothing wrong with how jjt and peridotgirl would tackle the problem. i just want my numbers to be whole so they are easier to work with.
you will have the same answer but i think whole numbers are easier to work with compare to
(0.75 g / 1 g ) x 50 ml
p.s. my instructor always says always work with whole numbers.
ofcourse if you use the calculator, it does not matter.
i am not allowed to use calculator at school.
angelLast edit by agldragonRN on Dec 23, '07 
Dec 24, '07Occupation: chillin at home Joined: Jul '07; Posts: 503; Likes: 174Quote from agldragontrue true.. i never thought about i that way. thanks!not really. i would rather change the gram to mg. it is much easier to work with whole numbers than decimals. plus, in this problem you will be administering meds in ml not mg, so yes you can definitely change the grams to mg because what you have on hand is in ml not grams.
for example, this is how i would do this
1. convert 1 g to 1000 mg
2. then i would do the ratio and proportion
= (750 mg / 1000 mg) x 50 ml
= (3/4) x 50 ml
= (3/2) x 25 ml
= 75/2
= 37.5 ml (this is how much you would give)
there is nothing wrong with how jjt and peridotgirl would tackle the problem. i just want my numbers to be whole so they are easier to work with.
you will have the same answer but i think whole numbers are easier to work with compare to
(0.75 g / 1 g ) x 50 ml
p.s. my instructor always says always work with whole numbers.
ofcourse if you use the calculator, it does not matter.
i am not allowed to use calculator at school.
angel 
Dec 24, '07Occupation: Wound Care RN Specialty: 5 year(s) of experience in Wound Care, LTC, SubAcute, Vents ; From: US ; Joined: Sep '07; Posts: 1,623; Likes: 1,256Quote from peridotgirlyup. no problem. anytime!true true.. i never thought about i that way. thanks!
happy holidays!!
angel