IVs are a way to get fluids or medicines directly into a person's vein. IV is short for intravenous. Yes, there's a needle involved — but only for a couple of seconds. Watch this video to see what happens during an IV. Back to Articles Related Articles Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.