6 results
Cerebral Salt Wasting vs SIADH - Pathophysiology 
1) Neurological event
2) Sodium loss from tubules
3) Naturiesis →
Cerebral Salt Wasting ... Neurological event 2) Sodium ... → ADH → water reabsorption ... diagnosis #nephrology #hyponatremia ... #comparison
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
: • ADH ON (UOsm ... ON (UNa < 30): Hypovolemia ... OFF (UNa > 30): SIADH ... Reset osmostat, Cerebral ... Algorithm #diagnosis #sodium
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
restriction alone in SIADH ... , Renal Sodium loss ... Insufficiency, Cerebral ... , Hypervolemia with ... #differential #
Hyponatremia - Differential Diagnosis Algorithm
Hypovolemic - Give volume
Hypervolemic (Edematous) - Look for and treat underlying cause
Hyponatremia - Differential ... Diagnosis Algorithm Hypovolemic ... • UOsm > 300 - ADH ... , SSRIs) - SIADH ... diagnosis #nephrology #sodium
Hyponatremia - Differential Diagnosis by Mechanism
Decr Blood Pressure (“Decr Effective Circulating Volume”) 
 - Volume depletion
Hyponatremia - Differential ... Inappropriate ADH ... secretion (SIADH ... osmostat - Cerebral ... Table #Causes #Sodium
Hyponatremia (<135 mEq/L) is a common electrolyte abnormality caused by an excess of total body water
body water in comparison ... osmolality helps to differentiate ... consequence of cerebral ... #hyponatremia #ADH ... EBV #potomania #SIADH