POLYURIA

POLYURIA Polyuria Urine Output > 3L/dayIncreased Urine Volume (>2ml/min)Water Diuresis Urine Osmolality < Serum Osmolality Osmotic Diuresis Urine Osmolality > Serum Osmolality Uosm Increased by >50%Proper kidney response Hypotonic Urine Following Water Deprivation Test Excessive LossHypertonic Urine Following Water Deprivation Test Central Diabetes Insipidus Uosm unchanged or increased by <50%Unresponsive Kidney Hyperglycemia (uncontrolled Diabetes Mellitus) Mannitol administration Increased urea concentration (e.g. Recovery from Acute Renal Failure, increased protein feeds, Hypercatabolism [Burns, Steroids], GI Bleed) NaCl administration Primary polydipsia Nephrogenic Diabetes Insipidus Give DDAVP