Was this patient in an ICU? How severe was the pancreatitis? The physician should have a very good idea of what the patient's fluid status is so you were right to call. Severe pancreatitis can cause systemic inflamatory response syndrome which can cause third spacing. You would not want to slow down the fluids on a patient with that condition. They can go into hypovolemic shock and brady down to cardiac arrest. There is a condition known as noncardiogenic pulmonary edema and that is a hallmark of ARDS (Adult Respiratory Distress Syndrome) which is treated with higher concentrations of oxygen.