Synopsis
Recognise sodium and water depletion from a high-output stoma, exclude reversible causes, restore renal perfusion, and construct an oral, dietary and medicine plan with intestinal-failure safeguards.
- A high-output stoma is output sufficient to cause water, sodium or often magnesium depletion; an absolute volume is only a guide, commonly concerning above roughly 1.5 to 2 litres daily depending on intake and anatomy.
- First restore circulation and renal function, then measure intake, stoma losses and urine while investigating obstruction, sepsis, enteritis, active bowel disease and medicine-related causes.
- Jejunal or ileostomy fluid contains substantial sodium, so drinking large quantities of plain water can increase net sodium loss and worsen thirst despite more fluid passing through.
Key red flags
Hypotension, syncope, confusion, anuria or a rapidly rising creatinine requires urgent intravenous resuscitation and senior assessment rather than outpatient oral-fluid adjustment.
Investigation priorities
Quantify net oral and intravenous input, stoma loss and urine over a representative period.
Management branches
High output is accompanied by oliguria, postural compromise, hypotension or deteriorating renal function.
- Assess ABCDE status, obtain urgent renal and electrolyte tests and stop nephrotoxic or output-promoting medicines where clinically safe.
- Restore circulating volume with appropriate intravenous sodium-containing fluid, accounting for cardiac and renal comorbidity and ongoing loss.
Circulation is restored but ongoing stoma loss continues to threaten sodium and water balance.
Key medicines
Glucose-saline oral rehydration solutionSip the specialist-prescribed daily volume prepared exactly to the approved recipe, replacing rather than simply adding to unrestricted low-sodium drinks.
LoperamideGive the intestinal-failure regimen before meals and titrate to measured response; specialist doses may exceed the product licence under explicit governance.