hello, i am preping for my med math exam and i have no idea how to solve this . please teach me. thanks alot in advance. God bless
1) the physician orders 1200ml tpn solution with 25% dextrose, 20% protein, 5% fat. how many calories is the client receiving in total?
2) calculate the amount of dextrose and NaCl in the following IV soln: 2 litre of D5 1/3 NS
a) dextrose= _______ gram
b) sodium cholride =_______ gram
3) the physician order heparin drip 30,000units IV in 500 ML D5W to infuse at 3000u/h. the pharmarcy sends up a 10ML bottle of heparin sodium with concentration of 5000units/ml. tje nurse would add ______ ml of heparin into the infusion bag. the nurse would set the infusion pump rate at _______ml\hr
pleaseee help me figure out how to solve problems like this. thanks again. :)
wow...programs that don't require chemistry....is this a four year?
No. Chem is required for the BSN at our school, but it is a bridge program, so we do go through all of that med math and dosage without having chem, in a lot of cases. It is required to bridge, but it is not required to get into the ASN program. As much as I hate chemistry, it would be really helpful to have it in a lot of cases. Had I known that, I would have taken it before. :/ That being said, I already lost a great deal of the math I learned in my liberal arts math a little over a year ago. I have such a hard time retaining that subject if I am not actively using it! Even just a summer off had me scrambling and asking for help last week when we started using it again. I can feel the OP's pain.
wow...programs that don't require chemistry....is this a four year?
Even my ADN program required one class each of Gen Chem and Organic chem! My program doesn't even start for another 3 weeks, but those chem classes are already paying off because I have so much reading and a couple of assignments due for the first day. I was kind of annoyed when I had to take them, as I really do not like chemistry, but I now see exactly why they made us take them!
I'm not sure about OP, but I have never taken a chemistry class in my life. It was not required as a prerequisite, and I never even took it in HS. A math/chem tutor could be helpful here if your school has them. Ours has a nursing tutor specifically for us, and she does a LOT of med math. Some people just have a really hard time retaining math. Even super simple things. I know I do. If it weren't for my math whiz desk-mate I would be in hot water. If I don't use it all the time, I lose it quickly in that subject. Good luck, op!
This is not as much a math question as a chemistry question, again.
You can't be serious that you can become an RN without knowing this much chemistry (which is very rudimentary). The problem with that is obvious: a nurse without knowledge of what, say, a normal saline solution holds or what a 5% or 50% dextrose solution means is really handicapped in her understanding of the therapies for which she is responsible to administer and monitor. This is truly disturbing.
This is not as much a math question as a chemistry question, again.
You can't be serious that you can become an RN without knowing this much chemistry (which is very rudimentary). The problem with that is obvious: a nurse without knowledge of what, say, a normal saline solution holds or what a 5% or 50% dextrose solution means is really handicapped in her understanding of the therapies for which she is responsible to administer and monitor. This is truly disturbing.
The school has a 99% NCLEX pass rate so it isn't holding us back. They do teach those med math points in pharmacology and the first semester's nursing core class, including solutions, etc. That's not to say I don't agree that it should be a prerequisite, but our graduates have a great reputation in spite of it. We learn what we need to in the nursing courses, and are hired over graduates from local universities who have BSNs and a semester of chemistry.
My point was, some people have a hard time retaining even the more basic math skills if they go for a period of time without using them. I do. It comes back to me with a good solid review, but I do require review. Maybe OP just needed to be talked through for it to click again. That helps me with my classmates. No way I can just recall a formula from a prerequisite I took two years ago without a memory jog! That could well be all that OP needed.
The school has a 99% NCLEX pass rate so it isn't holding us back. They do teach those med math points in pharmacology and the first semester's nursing core class, including solutions, etc. That's not to say I don't agree that it should be a prerequisite, but our graduates have a great reputation in spite of it. We learn what we need to in the nursing courses, and are hired over graduates from local universities who have BSNs and a semester of chemistry.
My point was, some people have a hard time retaining even the more basic math skills if they go for a period of time without using them. I do. It comes back to me with a good solid review, but I do require review. Maybe OP just needed to be talked through for it to click again. That helps me with my classmates. No way I can just recall a formula from a prerequisite I took two years ago without a memory jog! That could well be all that OP needed.
Once again, this is not a question of knowing a formula or even of mathematics (it's arithmetic-- multiplication, division, and addition). While you all passed NCLEX and your school is popular with employers, I would be worried if you couldn't tell me the difference between D5/0.9%NaCl and D5/3% NaCl and :oornt: why we care. I don't think you're trying to say that you didn't "need" to learn chemistry, are you?
Once again, this is not a question of knowing a formula or even of mathematics (it's arithmetic-- multiplication, division, and addition). While you all passed NCLEX and your school is popular with employers, I would be worried if you couldn't tell me the difference between D5/0.9%NaCl and D5/3% NaCl and :oornt: why we care. I don't think you're trying to say that you didn't "need" to learn chemistry, are you?
Of course not, but I don't run the program. We get what we need one way or another (through pharm in this case), and I will eventually end up with chemistry under my belt as I work for my BSN, so it all works out in the end for me.
Wow! Do you come across this condescending and judgmental when you deal with your patients? "No, it doesn't kinda suck that you are obese and have diabetes, sir. What sucks is that you failed to remember what you were taught in your rudimentary high school health class to eat healthy and minimize the sweets!" It doesn't matter how well you do in school, if your bedside manner sucks.
She asked for help with her med math preparation. She didn't ask for criticism of her past nor of her program. Right now, she's a student, not an RN and looking for some help. It doesn't matter that her ADN program doesn't require chemistry--with a 99% pass rate, they obviously teach what RN's need to know.
If you don't know the answer or don't want to answer it, then don't. No need to criticize. If she doesn't have what it takes to be an RN, it's not for you to decide.
With that said FDW630, I agree with Jill. But what do I know? My ADN only required that I take chemistry as a prerequisite, which I did - 25 years ago. ;-) Good luck!!!
OK, I took a shot at the second two questions. If there are 5 g dextrose/100 mL then there would be 100 g in 2000 mL dextrose.
Came up with 6 grams sodium chloride using the same formula. Yes or No?
The third problem I came up with 6 mL Heparin. If you add 6 mL to 500 mL thats 506ML/30,000 units x 3,000 units/hr = 50.6 ml/hr. Is this right at all? Do you add the 6 mL to the 500 to get 506 for the equation?
OK, I took a shot at the second two questions. If there are 5 g dextrose/100 mL then there would be 100 g in 2000 mL dextrose.
Came up with 6 grams sodium chloride using the same formula. Yes or No?
Yes. Now you can figure out calories if you have to, knowing how many calories in a gram of sugar.
The third problem I came up with 6 mL Heparin. If you add 6 mL to 500 mL thats 506ML/30,000 units x 3,000 units/hr = 50.6 ml/hr. Is this right at all? Do you add the 6 mL to the 500 to get 506 for the equation?
You don't have to add the 6 cc to the 500 in your calculations; calculate the total heparin per cc and take it from there.
We get what we need one way or another (through pharm in this case), and I will eventually end up with chemistry under my belt as I work for my BSN, so it all works out in the end for me.
Esme12, ASN, BSN, RN
20,908 Posts
wow...programs that don't require chemistry....is this a four year?