 This study will be to directly compare placing an IV in a child under 2 years of age with the AV400 versus not using the device. A physician, medical student, or nurse practitioner who has been trained on how to observe nurses place IVs will enroll children who require an IV for their ED clinical care as determined by their ED doctors. This person will consent the parents, ask the parents questions regarding the childs past medical history, and have the nurse look at the veins of the child ahead of the IV access attempt to rate the level of difficulty expected easy, moderate, difficult. Whether the child has the IV attempt performed with or without the AV400 will be computer randomized. The nurse will attempt to place the IV, and the study staff will observe and record the number of attempts, size of the IV catheter, and location of the IV. If 2 attempts are failed, the patient will cross over to the other condition, that is if AV400 was being used then it will not be used, and if AV400 was not being used then it will be used. If there are 4 failed attempts at IV placement, then the child will be treated as per our departments difficult IV access protocol, which is applied to all children with difficult IV access regardless of participation in the study. After the IV placement, both the parents and the nurse will be asked several questions regarding satisfaction with use of the AV400. 