The subject will be placed on 1.5x maintenance IVF with the fluids to which they are randomized. The patient will remain nil per os (NPO) for at least the first 24 hours, and the time of initiating feeds after 24 hours will be at the discretion of the admitting team. As the standard of care, the following studies will be obtained at the time of admission if not previously obtained in the ED: Complete Metabolic Panel (CMP), gamma-glutamyltransferase (GGT), Amylase, Lipase, Triglycerides, Complete Blood Count (CBC), and CRP, along with an abdominal ultrasound. CBC, CRP, amylase and lipase levels will be obtained at 24 and 48 hours (+/- 2 hours) as listed in the Admission Order Sheet. Similarly, a Basic Metabolic Panel (BMP) will be collected at 24 and 48 hours (+/- 2 hours), with the addition of liver function tests if liver enzyme levels are elevated at admission (as defined by transaminases greater than 2 times the age appropriate upper limit of normal). SIRS status will be evaluated with vital sign checks every 4 hours and the leukocyte counts every 24 hours.