Polyuria

Excess water diuresis

• Appropriate

  • polydipsia (excess drinking)

  • IV infusions

• Inappropriate

  • diabetes insipidus

Excess solute diuresis

• Appropriate

  • saline loading

  • after release of urinary obstruction

• Inappropriate

  • hyperglycaemia

  • high protein feeds

  • sodium-wasting nephropathy

  • hypercalcaemia