Which of the following is true of loss of gastrointestinal secretions?

D. Balanced salt solution is a reasonable replacement fluid for a small bowel fistula.

E. A patient with persistent vomiting usually requires hyperchloremic replacement fluids.

DISCUSSION: Gastric secretions are relatively high in chloride and potassium. Other than an isolated pancreatic fistula, gastrointestinal tract losses below the pylorus are best replaced by a balanced salt solution. Although potassium concentrations are low, copious losses require potassium supplementation to prevent hypokalemia.