Impaired concentrating ability

external

• Causes

  • Diuretic
  • Renal tubular damage
  • Acute tubular necrosis
  • Uraemia
  • Diabetes insipidus
  • Diabetes mellitus
  • Hypercalcaemia
  • Hyperglycaemia
  • Bartter syndrome

• Effects

  • Polyuria
  • Polydipsia
  • Nocturia
  • Renal sodium and water loss