Following fistulous conditions give rise to maximum fluid and electrolyte imbalance -

• Enterocutaneous fistulas are classified according to their location and volume of daily output. • These factors dictate both treatment and morbidity and mortality rates. • In general, the more proximal the fistula in the ‘intestine’ (but not the stomach), the more serious the problem, with greater fluid and electrolyte loss. • Maximum fluid and electrolyte imbalance occur in duodenal fistulas