What can cause pancreatitis in patients who have had a gastric bypass?

The most likely cause of pancreatitis in bariatric patients are gallstones passing into the common bile causing an increase in pressure in the pancreatic duct.  Even when an ultrasound does not show stones in the gallbladder, there is a possibility that there are small stones that can pass into the common bile duct,  Rapid weight loss or multiple diets over your life can put you at increased risk for gallstones.  When these stones pass out of the gallbladder they can get stuck in the duct that takes bile from the liver to the bowel. This duct also empties enzymes from the pancreas.  The pancreas does not like increased pressures and sometimes the enzymes become active in the pancreas instead of the bowel.  This results in pancreatitis.

Other causes could be medications, alcohol, viral illnesses, elevated triglycerides and idiopathic pancreatitis( not a clear cause).

It is always important to contact your bariatric surgeon is you have pancreatitis.
 

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