The first line treatment for cough related to an upper...

The first-line treatment for cough related to an upper respiratory tract infection (URI) in a 5-year-old child is: Chlorpheniramine and dextromethorphan syrup (Nyquil for Kids) Fluids and symptomatic care Dextromethorphan and guaifenesin syrup (Robitussin DM for Kids) Guaifenesin and codeine syrup (Tussin AC)

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00:01 Okay, we're told the standard dose of cough suppressant, and let me make sure i specified this as an adult dose, is 20 milliliters and it contains 35 .0 milligrams of active ingredient.

00:54 So for question a, we are asked the concentration in milligrams per milliliter for the adult strength.

01:11 That's easy, that'll be 35 .0 milligrams divided by 20 .0 milliliters.

01:25 35 divided by 20 is 1 .75 milligrams per milliliter.

01:34 There's my answer for letter a.

01:39 For b, we've got some more information here.

01:44 We're told that we have a six -year -old child and that person can have 10 .0 milliliters per dose and that'll contain 17 .5, obviously, milligrams.

02:06 Blah, blah, blah, blah, blah.

02:08 And we're asked how many milliliters of adult cough syrup should be diluted to make 250 milliliters.

02:39 Oh, my pen is making noise at me.

02:46 250 milliliters of child dosage cough syrup.

03:03 Okay, so it looks like i'll probably need 125.

03:07 This is pretty simple.

03:09 So i need x milliliters of 1 .75 milligrams per milliliter will equal 250 milliliters of 35 divided by 20.

03:57 And that's, actually, i'm going to do this a different way.

04:26 I'm going to use my adult dosage of 35 .0 20 and i'm going to get my 17 .5, which is just half...