Capillary Refill for Assessment of Dehydration

All patient presenting to the pediatric ER at OHSU less than 10 years are eligible to be enrolled if being seen for a condition putting them at risk for dehydration including emesis, diarrhea, etc. Children will have their capillary refill time measured and then sent home with a digital scale to track their weight. This will serve as the standard for calculating percent dehydration. When a patient has reached a stable weight at 1 week we will assume this is their healthy weight. There is no intervention in the study.