How serious is the blockage from the barium solution?

Hello doctor,

My mother started having internal bleeding two weeks back due to Pradaxa, which she was prescribed three weeks ago. In search of this internal bleed, my mother was asked to drink a gallon of bowel flushing solution. She drank two-thirds of the solution, but was told that she had not had enough to do the colonoscopy, so the test was put off till the next day. She was asked to drink another gallon of this solution. All the barium solution caused a blockage causing her to puff up, which went unnoticed when they performed a colonoscopy. They did not find any damage to her colon, so after determining that the bleed must have been in her small intestine, they attempted to do a barium follow, in which they found a blockage just outside her stomach. The barium has now been in her stomach for three days. How long can she go like this before it becomes a serious life threatening condition? The blockage was originally a dull pain and now has gone to a sharp pain and laboratory people are still just waiting for it to pass. At present, she is taking an intravenous antacid Norco 10 for pain and an antibiotic Cefalexin, Albuterol and Dulera for her bronchial issues.