It is hard to eliminate the inciting factor since a cause is never found in 90% of the cases. However, broad-spectrum antibiotics, and other antimicrobials should be used to cover possible infectious causes such as toxoplasmosis infection, and to cover infections secondary to the pancreatitis, if warrented.
Treatment of pancreatitis in cats include the following:
For Anorexia (not eating), use appetite stimulant medications.
For Dehydration, use IV and/or Sub Q fluid therapy,
For Hypothermia (dangerously decreased body heat), use incubators, heating pad, etc.
For Vomiting, use anti-nausea medications
For Abdominal pain, use injectable analgesics ,
For Diarrhea, use antidiarrheal medications
For Coagulation abnormalities use Vitamin K
To reduce acid, use an H2 blocker (Pepcid)
For inflammation, use corticosteroids
For lymphoplasmacytic pancreatitis, use Metronidazole
Treat any concurrent problems such as IBD, Hepatic Lipidosis, etc. appropriately
Cats must eat! If they are anorexic for 48 hours or more they can get Hepatic Lipidosis (fatty liver disease) So keep them eating! If this is not possible than they must be tube fed, using one of the following: nasogastric, esophageal, gastrotomy, or jejunostomy feeding tubes.
The best diet is high quality protein.