Nursing medication math calculation - wv percentages made easy! - Free Educational videos for Students in K-12 | Lumos Learning

Nursing medication math calculation - wv percentages made easy! - Free Educational videos for Students in k-12


Nursing medication math calculation - wv percentages made easy! - By tecmath



Transcript
00:0-1 Good day . Welcome to Take Math Channel . This
00:01 video is a continuation of a series I've been making
00:03 for our nurses looking at drug calculations and what this
00:06 one is looking at specifically is percentage is used in
00:10 drug calculations . Now , these percentages usually used to
00:13 show the concentration of a particular active ingredient in a
00:17 drug . So what do I mean by that ?
00:20 That's where you have say something like this . 10%
00:24 . And you'll see quite often Wv written after it
00:27 . Yeah . With this I'm going to show you
00:29 first off just what this means and then how we
00:31 can use this to work out a few things .
00:33 Just various concentration based questions uh That you might come
00:38 across or things like that . Now , first off
00:41 , what does this mean ? When you see this
00:43 this 10% WV is fairly simple . As long as
00:46 you break it down 10% . 1st off , you're
00:49 probably well aware 10% means . 10 out of 100%
00:53 is out of 100 . The W . V .
00:56 Part tells us you know what the 10 and 100
01:00 mean ? Okay , what I mean by this ,
01:02 You know , 10 What's out of 100 watts .
01:04 The w stands for weight . The weight specifically here
01:10 Is in g . This is 10 g out of
01:14 100 . This is where the V . Part comes
01:17 in the V states of volume . The volume is
01:21 given in mill . Okay , this is 10 g
01:25 per 100 bill . And that's pretty much what these
01:29 mean . So say for instance , if you had
01:32 it was , I'll give you a different one here
01:34 . So say it was something that you had 3%
01:38 W . V . It would become three g per
01:43 100 mil . And if this was ah 5% WV
01:48 of an active ingredient , it would become you guess
01:52 that five g per 100 mil . This part stays
01:55 the same . It's only this little bit up here
01:56 , that changes the amount of grams . Okay ,
01:59 and that's a concentration that we have here quite often
02:02 constant . And you will see your concentrations uh this
02:05 sort of format where we have grams per mil or
02:07 milligrams for miller milligrams per liter , but it's always
02:11 in that , you know where we're going , wait
02:13 per volume . Okay , so I'm going to show
02:16 you there how we can play around with this first
02:19 off to work out a few things , but just
02:22 what I'm going to show you , it's just another
02:24 way of writing this or another way of working out
02:27 the concentration , but not in grams per per mil
02:31 , which is a little bit cumbersome . You'll find
02:33 I'm going to show you how to work this out
02:34 in terms of milligrams per bill . Okay , and
02:40 this is a lot easier way of working with concentration
02:43 because you can easily then convert things across and work
02:46 things out as you'll see . So first off ,
02:49 what is So a 10%, , 10% wv What is
02:57 that going to meet ? What is that going to
02:58 be this ? 10% of an active ingredient ? What's
03:00 that going to be in milligrams per mil ? So
03:03 , first I figured looking into , Okay , this
03:05 means Tyne grabs per 100 bill , which is equal
03:11 to now , milligrams is 1000 mg in a gram
03:16 . So by times 10 by 1000 have 10 1000
03:21 mg per 100 mil . Okay , so the units
03:26 are right , milligrams are right and mills are right
03:28 and I can now council things out . So there's
03:32 two zeros up here and there's two zeros down there
03:34 and I am left with 100 mg per bill .
03:41 But I'm going to show you just a little trick
03:42 here , a little shortcut . If you want to
03:45 easily go from this percentage here straight into milligrams bill
03:49 . If you want , you can easily do this
03:51 grams familiar . You want to put it straight away
03:53 into milligrams ? Mill just times by 10 . Okay
03:57 , so 10 times 10 is equal to a 100
04:02 to say slightly differently . If it was 3% ,
04:07 I want to know what it is in milligrams per
04:10 mil . Well just times it by 10 And it
04:15 is 30 mg per bill . Okay , or another
04:19 way you can think of as three g per 100
04:22 mil . Okay , so it's two ways you can
04:24 do this . So just give you one more of
04:27 those to say . I wanted to know what uh
04:31 Okay , harder one there . 0.5 . So the
04:34 active ingredient was 0.5% WV wait for volume . What
04:39 is the milligrams per mil with times it by 10.5
04:43 times 10 this would be five mg per mil as
04:48 the active ingredient . Okay , so You're going to
04:51 say , Okay , what of it ? It's sort
04:53 of showing you halfway , but this now we can
04:55 use to work out a whole bunch of things .
04:57 It's the same for instance , we had dextrose and
04:59 it was 1% Dextrose , WV and 20 bill Of
05:06 this particular solution is given . I don't want to
05:08 know how much of the active ingredient is given .
05:10 So say this was dextrose , one 20 mil of
05:14 the solutions , given how much actual dextrose has given
05:18 . How do we work this out ? The way
05:20 we do ? This is as follows . Now ,
05:21 the first thing I do is I change this into
05:24 milligrams per mil . Okay , it's a nice universal
05:27 sort of thing . So 1% Wv is times 10
05:32 , this is 10 mg per bill And 20 bills
05:38 given . So There's 10 mg every mill 20 mil
05:43 is given . So at times just by 20 mil
05:47 it tells us 200 milligrams of active ingredient is given
05:55 . So that's why I had you changing those at
05:57 the start because it's a nice and easy way of
05:59 doing this . Okay , what about we go through
06:03 another one of these types of questions to say we
06:06 had 0.5% in concentration and 10 Miller's given , how
06:14 much the active ingredient is given . So how do
06:18 we work this out ? Well , we're gonna change
06:20 this into milligrams per mil . 0.5 times 10 is
06:23 five mg per mil , and then times 10 mil
06:27 because for each meal we're getting five mg , so
06:30 10 times 10 mil , We are given 50 milligrams
06:36 of active ingredient . So the other type of question
06:40 you might get with this is say for instance ,
06:43 you had 12.5 g of active ingredient , which is
06:49 glucose and this is in half a liter . And
06:54 I want to know what the what is the percent
06:57 v I want to know what that is . I
07:00 want to change it back to the initial part .
07:02 So how do we go about doing this ? Well
07:04 , that's fairly simple . You probably guess the first
07:07 thing we're going to do is we are going to
07:09 put this as a milligrams per mil . So 12.5
07:15 and we're going to put this in milligrams per meal
07:18 first and then instead of times it by 10 to
07:21 get it back to the w and they're defined by
07:23 10 . Yeah . So what's this in milligrams from
07:26 bill ? How many milligrams ? In 12.5 g ?
07:31 This is 12,000 500 mg . How many mills is
07:40 this ? This is 500 mil . So I made
07:45 sure the unit is good and now I can just
07:48 divide through so I'm going to get rid of zero
07:52 . Is here this zero this zero this zero this
07:54 0 125 divided by five is 25 milligrams per built
08:04 . And what is as the active ingredient percentage here
08:08 ? Well , instead of times it by 10 .
08:10 Which we were using to get To this stage from
08:13 the you know this way I'm gonna be going backwards
08:17 . So I'm gonna divide by 10 . This is
08:18 2.5% . Let's put the top of your very there
08:22 just to be happy . All right . What about
08:24 another question here ? Say we have 1.6 g of
08:30 dextrose . It's in 200 mil . And I want
08:33 to know you can guess it . I want to
08:35 know what the percent W . V . Is .
08:40 Yeah , I want to know what that is as
08:41 a concentration percentage . So first off , I'm gonna
08:44 put this in billy Graham's per bill . So what
08:47 is this in milligrams Per bill . This is ingram's
08:54 . I'm gonna change in milligrams and at times it
08:56 by 1000 . This is 1600 mg . This is
09:00 already in bill . This is 200 pill 1600 ,
09:05 divided by 200 . This equals right milligrams per mil
09:14 and then dividing it by tend to get it back
09:16 to this percentage . This is 0.8 percent W .
09:22 V . All right . Anyway , hopefully you found
09:25 that video usable and well , always happy to make
09:30 more videos . See you next time . Bye .
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