NURSING CALCULATIONS from mathstutor.biz PART ONE

[dementeddarling]

I watched this (I teach medical assisting and we just finished dosage calculations), and I must agree with some of the previous comments. The easiest formula for these problems is:

Order/On Hand x Quantity. The first problem in the video would be 400mg/125mg x 5mL = 16mL

[ELNODICTUS]

oh my this is way too complicated. The simple formula is DESIRED DOSE/Stock dose x dilution. D/s x dilution

[Nataliaa13B]

wow talk about complicating it up! lol 400mg over x . 125mg over 5ml. x X's 125 = 125. 400 X's 5 = 2000. 200 divide 125 = 16ml. Give 16 mls. SIMPLE! 

[janreyqm7]

nice one! i will take the risk rather than the easy one.

[aperfecttool213]

I love this. A different approach on problems. The simple formula that I use is D (dosage) divided by A (available or stock) multiplied by the Q (quantity or volume). The method you have is basic algebra (correct me if I'm wrong). Thanks sir.

[uhhhphilip]

jesus christ dude you just made that WAY to hard.. its simple really check all the above comments if you are confused.. its not hard

[mathstutorbiz]

@uhhhphilip Ok. Now you please read my replies to other comments (when I bother to write a rep[y) and understand why I leave my method on youtube......... it is not hard!!!!! mathstutor

[MysticalBlackBeauty]

i'm confused as hell :(

[versace1962]

I like this method. It's gives one way to solve the equation. With math, there can be several ways to solve a math problem, it's advantageous to know and understand the many ways to manipulate the numbers to solve a math problem.

[mike1who1]

WTF....THIS IS SO LOL . HOW DID YOU MAKE SOMETHING SO EASY.. EXTREMELY COMPLICATED. I WORKED THIS OUT ANAD SOLVED 30 SECONDS AFTER HE STARTED. I GOT LOST HOW MANY 25'S IN 2000. BUT I GUESS SOME NEED TO KNOW THIS METHOD ALSO.

[bazbee1]

thanks for making my fear of maths even more intense! great help.

[zantaclee]

This means 1ml volume contains 25mg penicillin

If 400mg penicillin is needed, 400mg is divided by 25mg/ml

16ml

[LazFire91]

in our exam we have 1min per question. we need quicker methods than this.

[funlayo]

well this is a complicated one.the patient can't wait forever.the simplest way i was taught is ;required dosage multiply by volume at hand the answer is then divided by dosage in stock.I use calculator its easy and straightforward.

[williamdiaz123]

This guy is an idiot all you have to do devide and multiply 400mg/125x5 = 16ml

[daleena19]

Dont watch the video if you think he is complicating things. Obviously since you already have it figured out you shouldnt be searching for med calc help! I find it helpful to take things step by step to avoid making mistakes when choosing the easy way out.

[mathstutorbiz]

@daleena19 Thank you for your comment. Very much appreciated. With all the sour comments it would be so easy for me take the clip off, but I'm pleased I have not..... and wont be!!! mathstutor

[interluk]

Do all new nurses a favor and delete this video!!!!...nothing like making something simple ridiculously complex.

Why should I go from point A to B, then B to C, then C to D if I know i can get there more directly from A?



[MarionDBrown1]

I agree with Jferrel1, I am absolutely rubbish at maths and need to get 100% in my nurse prescribing course. My answer before he had completed the question was 16ml and it was by dividing what I want (dose) by what I have available and times by what its in. This formula is used a great deal in nursing. I need more help with the costings questions!! lol wish me luck, I have my exam on the 4th February 2011 (day after my birthday!).

[dsadasey]

By time I'm finish calculating using his techniques, my patient would be DEAD! ;-/

[bobsgals]

Talk about complicating a simple mathematical equation! I had completed this in my head within 30 seconds. This man (note a man) went all around the problem before coming to the answer...I always reduce to the simplest form.... I broke it down to find out how many mgs per ml..... Then it is simple addition. 5 into 125 goes 25 times. 25 mgs per ml. 4 mls is 100mgs! 4x4 =16.

It's no wonder so many people are bad at simple calculations when people complicate it thus!

[mathstutorbiz]

@bobsgals Read all the other comments & find nearly EVERY one agrees with you. I have watched my video again & I AGREE WITH YOU. However I am still happy with my method. The nurse I made it for it was the right method. She found herself (YES HERSELF) able to understand & answer correctly questions on an exam she had failed twice passing with full marks. This is the first time for a long time I have bothered to reply to a comment but there is nothing on the TV to watch. mathstutor

[4islandbeauty]

thanks for taking time out to post the video but i have to agree with others when they say you made this more complicated than necessary!

[pixiechick1981]

why is he making this so complicated?

[renelieace]

formula: D/SXQ --> 400/125=3.2 then 3.2X5=16ml

[ART1975CZ]

What the Hell ? 

[khuletgurl121]

your computation is complicated why dont you use the easiest way DESIRE/STOCK X QUANTITY

[donmega818]

that formula is ridiculous, just divide the desired over the dose on hand, x the volume... so easy.

A.T. RN, BSN

[brandenmurph3]

Thank you!

[fionabollozos]

its hard to understnd.400/125 then mulply 5 = 16 simple

[bochito16]

As a pharmacy technician we are tought a formula of D/A times Q. Where A is amount we have, D is desired amount and Q is quantaty. So 400/125 is 3.2 multiplied by the ml which in this case is 5 equasl out to 16. The way though in this video helped me in reviewing my answer. If u need any math help email me.

[suzenrose]

This is easier

Dose / on hand x how it comes = amount

400mg /125mg x 5ml= 16ml

Now wasn't that easier??!!

[osedjohami]

lol, much easier. :) thanks

[ahcsbaby]

This is not a very good method of working nursing math, Dimensional Analaysis is so much easier to work out nursing problems.

[Isis3875]

Way to complicated!

[neurotikjourney]

complicated solution.just use the method:D=desired divide S= stock xmls

D/S = 400mg/125mg=3.2mg xmls(5)=cancel mg to get mls =16mls.

[Antwanete]

Thanks alot

[jferrel1]

he makes it too complicated

the easiest way is get what is ordered, which is 400 mg and divide by the available which is 125 mg and multiply by the ml ( 5 ml).....

400mg / 125 mg x 5 ml = 16 ml

always works

[JohnYesh911]

I stopped the video and just looked at what you posted. Thanks you're more helpful!

[influence32]

Hell with what they are saying, you just broke it down alot easier then my text books I will pass my nursing math thank you

[pelblume]

why can this guy just say divide 400mg to 125mg then you'll get 3.2 then you multiply 3.2 to 5ml and the answer is 16ml. the way his setting this up its more complicated for most people. try my way and believe me its more easier than this.

[mathstutorbiz]

If you divide 400 INTO 125 the answer is 0.3125. If you divide 400 BY 125 then you get 3.2. BUT saying "divide 400 TO 15"???

Just like to say that the BEST way is the way you are happy with, gets the correct result, and a bonus if you understand. Good luck to all with THEIR method. mathstutor

[tierramjones]

@mathstutorbiz A much more simplistic way would be to just divide 5/ 125 then multiply by 400. This way you can skip the reduction of fractions and the answer is still 16mL.

[lynnhuguely]

I just took the 200/125 and multiplied by 5ml/1 and came up with an answer of 16

[koolin5]

That was the dumbest way to even get that answer, This vid will confuse any new nurse trying to learn this.

[lamurk]

this video made simple complicated!

[lamurk]

cross multiply then divide and that's it!

order 400 mg

On Hand 125mg in 5 ml

(put 125 mg over 5ml) to the right put

400 mg over x ml

cross multiply

400 mg x 5 ml (2000) then divide 2000 by 125mg = 16ml

x=16ml

you will give the patient 16ml of PCN

[alps112001]

That is such an easy question, forget about this method you will be doing calculations for your life.

[RSXSera]

you just made things way more confusing.

[Ladybug91085]

Yeah, don't watch this video if your needing help with calculations! 125/5=400/x set it up like that and cross multiply: 125x=2000 then 2000/125 = 16

I don't know who teaches like he does. o_o

[genupertctomas]

with this calculation, that patient has died

[Flipzider25]

no....i think my brain just said "fuck it" and popped a blood vessel

[chipzchick]

im sorry to say but youre kind of making it complicated... you can just put it in simple terms so that people can understand better..

400mg/ 125mg x 5ml = 16ml

the formula is: DOSE NEEDED OVER STOCK ON HAND..

hope this helps to those who are a bit confused..

[missy4142]

ugh i want to be a nurse but i suck at math...can i learn everything i need to know in college? :(

[Flipzider25]

yes you can....

i hated this shit, but with enough supervision and practice.... you'll get it....

and trust me im a senior at a nursing school and i have a 5th grade math skill.... i still got it

if i can do it, you definately can too

[missy4142]

really?? thank you so much! :)

[ttdean]

well can you help me? lol I never get math but I need to get it in order to get into an LPN school.

[virtualetude]

lol if a nurse had to give that medication within in five minutes....with this all this work. the patient would die. nurses need to be fast at doin these types of calculation

[aleusa2004]

OMG!!! It takes a few seconds... you can also do it like this.... 125 mg in 5 ml is

125/5= 25 so 25mg is the amount you have per each ml.. now divide 400/25 and you get the total volume... 16ml

[rss22]

WOW!!!! I'm mad he took forever and a day to do a caculation that takes les than 1 minute to figure.....400/125= 3.2. Multiply 3.2 by 5 ...you get 16mL

[deltaforce]

400/125 cause you want to find out how many 125 are in 400 which is 3.5. so multiple 3.5 by 5 to find out how many in ml

[wizardzwish]

time wasting. just do 400/125 x 5.

[YawYan4Lyfe]

SON OF A BITCH I HATE MATH!!!

[DorothyDandrich]

Thanks,This is a question on the nursing entranse exam!

you need to know how to multiply and divide fractions..using the canceling

[bigeyearts]

and by the time uve worked this out the patient has died lol

[DDxHellRaiser]

I just set up as a proportion as OH/(xxx): DO/X

[moonlightbar]

so many computation this is a shortcut

try this computation its is more easier 400/12 * 5 = 16ml

[ranrandy]

how sad that we can't remember how to (or for that matter when to) use cross multiplication. I guess fifth grade was a long time ago. I need 1000 cc of AFLAC stat!!

[leefordplane]

doctors order over stock on hand times quantity. as simple as this...very easy..

[TimJK09]

There is a much simpler way or working this out - What you want divided by what youve got times by the volume its in so it would be 400/12 x 5 = 16.

[mathstutorbiz]

There is always more than one way to solve any problem. The idea of the set of nursing arithmetic DVD's (full set available on mathstutorDOTcom) was give as few methods as possible, to suit as many problems as possible, for those not so hot at arithmetic. So, not necessarily the quickest way. mathstutor

[TimJK09]

Sure it would be beeter to give 1 simple method then 1 very complicated method. We need to be thinking about when nurses will be doing these calculations and time restraints nurses face.

[mathstutorbiz]

I appreciate your point, re: the time restraints, not that my method is complicated!! I would say that, in my method the mechanics of the problem is easily understood, especially if the student has a poor general mathematical understanding, and this is therefore more likely to result in a correct answer under pressure. I would think that a correct answer is the prime consideration, not speed!!! (not that your method would save THAT much time!) mathstutor

[samioni]

Thank you lipeme. I'm pleased that the majority think as we do rather than the small minded minority..... by the way,the Engish saying is... "to skin a cat." Not sure if either paints a pleasant picture?!? mathstutor

[lipeme]

THanks, mathtutorbiz. I'm in Nursing school and i wonder what the critics were talking about. There are Million ways to kill a cat ( a proverb in my native Ghanaian language), it is the IQ level of the class that determines what method you use.

For, me, the 125mg in 5ml represents the supply dose, which is also refer to as the strengh in a given volume, hence DO/OH x 5ml i.e 400/125 X 5ml= Answer in Ml.

[damnittobh]

hahaha. I hope you don't teach your students this way! 400/125 x 5. Bam. There you go. That took 2 seconds.

[mathstutorbiz]

I think you missed the point. My aim with this set of videos is to help those that have a problem with arithmetic.... their talents lie in other areas. It is not a refection on intelligence if arithmetic is a problem. Or to put it another way..... nobody likes a smart arse. I teach my students using any methods that will help them achieve their personal targets, and I'm pleased to say I have had a great deal of success, at all levels of mathematics. mathstutor

[unforgiven911]

For some reason I think this is the LONG way to do it.

[bora1306]

Are u kidding me? I can do that without a paper. oh my god! Stupid

[wendi003]

I hope you aren't in the medical field with an attitude like that. Very rude.