6 results
Cerebral Salt Wasting vs SIADH - Pathophysiology 
1) Neurological event
2) Sodium loss from tubules
3) Naturiesis →
1) Neurological ... event 2) Sodium ... #SaltWasting #SIADH ... Pathophysiology #diagnosis #nephrology ... comparison
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
Renal losses, Cerebral ... uric acid <4 • SIADH ... syndrome • Urine ... algorithm #diagnosis ... #sodium #low #nephrology
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
failure, Cirrhosis, Nephrotic ... syndrome - ... OFF (UNa > 30): SIADH ... Reset osmostat, Cerebral ... #sodium #nephrology
Hypernatremia Diagnosis and Workup

Step 1 . Repeat the sodium concentration.
Step 2.  Check plasma osmolality.
NORMAL PLASMA
Workup Step 1 ... Repeat the sodium ... EUVOLEMIC • SIADH ... syndrome • renal ... #Nephrology
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
algorithm Urine ... +K / serum Na >1 ... Insufficiency, Cerebral ... syndrome) • ADH ... #nephrology
Hyponatremia - Differential Diagnosis Algorithm
Hypovolemic - Give volume
Hypervolemic (Edematous) - Look for and treat underlying cause
Hypovolemic - Give volume ... CHF, cirrhosis, nephrotic ... syndrome) Euvolemic ... #diagnosis #nephrology ... #sodium