How Much Water Do You Need Per Day?

So how much sodium generally does a person need per day? Or do they lose per day? 70-140 milliquivolence a day. Potassium, it's about the same. So when would you use a D5 solution? Somebody who's hypernatrimic. Yeah, you need free water. No, I mean, when you can give a person half normal saline or you can give them D5 half normal saline. Oh, I see. You would use it in children. The whole rationale is you give them some amount of calories that theoretically should prevent them from breaking down their own proteins. How much dextrose would that be in a liter of D5,