My husband is currently in the hospital being treated for dehydration and slightly high ammonia levels. The doctor explained that only 1/3 of IV fluids will get into the blood vessels so it’s extremely important to drink at least 2 liters of water each day, not sodas or other sugary drinks, which are bad for pancreatic cancer patients anyway. He had had a fluids infusion the day prior to our ER visit so I was surprised when they said he was dehydrated. Now I understand why.