This page explains what a contrast extravasation is, how it is treated, and symptoms to watch for. DOWNLOADABLE PDF: Contrast Extravasation.
The amount of fluid a child needs depends on many factors including their age, their gender, the weather and how much physical activity they do, but generally they should aim to drink about 6-8 glasses of fluid per day (on top of the water provided by food in their diet).
In addition to not having any fiber itself, kids who drink too much milk often get filled up drinking milk and might eat fewer foods that might be high in fiber. This can especially be a problem for toddlers and preschoolers who drink much more than 16-24 ounces of milk each day. In addition to constipation, another big problem of drinking too much milk is all of the extra calories that they are getting.