<prompt> The finding of urine sodium concentration 20 mmolL in hypovolemic hyponatremia impliesSalt-wasting nephropathyDiuretic therapyHypoaldosteronismTrauma  <response>: Hypovolemic hyponatremia Urine sodium concentration 20 mmolL Renal losses Diuretic excess Mineral coicoid deficiency Salt-losing deficiency Bicarbonaturia with Renal tubal acidosis and Metabolic alkalosis Ketonuria Osmotic diuresis Cerebral salt wasting syndrome Urine sodium concentration 20 mmolL Extrarenal losses Vomiting Diarrhea Third spacing of fluids Burns Pancreatitis Trauma Ref: Harrison 19e pg: 299 