Hyponatremia - Differential Diagnosis by Mechanism Decr Blood Pressure (“Decr Effective Circulating Volume”) - Volume depletion - Heart failure - Cirrhosis Syndrome of Inappropriate ADH secretion (SIADH) - Malignancy (e.g. small cell carcinoma of the lung) - CNS pathology (e.g. strokes, hemorrhage) - Pulmonary pathology (e.g. pneumonia, COPD exacerbation) - Drugs (e.g. carbamazepine, cyclosporine, SSRIs) Severe pain - Reset osmostat - Cerebral salt wasting Endocrinopathies - Hypothyroidism - Adrenal insufficiency ADH Appropriately Suppressed - Advanced renal failure - Primary polydipsia - Beer potomania - “Tea and toast” diet Dr. Eric Strong https://twitter.com/DrEricStrong #Hyponatremia #Differential #Diagnosis #Table #Causes #Sodium