I have a K pouch, which means less small intestine than the J pouch, plus no colon. I too have been hospitalized for electrolyte problems. it’s important to be conscientious as to how much water one drinks, which for me is about 3 L daily. my kidney doctor Figured out I needed sodium so I take 2 g of sodium daily during the winter and up at to 3 and sometimes 4 g during the summer. It’s a tough situation that requires constant maintenance/observation.