Colonic Potassium Secretion

Electrolyte Transport Patterns

• Each liter of jejunostomy fluid contains about 100 mmol/L of sodium, while the effluent from a jejunostomy or ileostomy contains relatively little potassium (approximately 15 mmol/L) 1

Clinical Implications

• Understanding colonic potassium secretion is important in managing patients with short bowel syndrome, especially those with jejunostomy 1, 2
• In patients with short bowel syndrome and high-output stomas, rehydration with intravenous saline solution is the first crucial step before addressing potassium imbalances 3