7 results
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
ON (UNa < 30): Hypovolemia ... OFF (UNa > 30): SIADH ... Reset osmostat, Cerebral ... #Algorithm #diagnosis ... #sodium #nephrology
Cerebral Salt Wasting vs SIADH - Pathophysiology 
1) Neurological event
2) Sodium loss from tubules
3) Naturiesis →
Cerebral Salt Wasting ... Neurological event 2) Sodium ... → Increased urine ... Pathophysiology #diagnosis ... #nephrology #hyponatremia
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
normal volume-based algorithm ... Urine Na+K / serum ... RAAS Inactive ... Insufficiency, Cerebral ... #differential #diagnosis
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
Hypovolemic, Serum ... Renal losses, Cerebral ... uric acid <4 • SIADH ... #algorithm #diagnosis ... #sodium #low #nephrology
Hyponatremia - Differential Diagnosis Algorithm
Hypovolemic - Give volume
Hypervolemic (Edematous) - Look for and treat underlying cause
Diagnosis Algorithm ... Hypovolemic - Give ... , SSRIs) - SIADH ... #Algorithm #diagnosis ... #nephrology #sodium
Hyponatremia (<135 mEq/L) is a common electrolyte abnormality caused by an excess of total body water
consequence of cerebral ... Measured urine sodium ... #RAAS #Hypovolemia ... EBV #potomania #SIADH ... #Thiazides #UNAa
A lazy man's classification of hyponatremia
There are two possible approaches to the diagnosis of hyponatremia: .
osmolality and urinary sodium ... the patient has SIADH ... or cerebral salt ... #Diagnosis #Hyponatremia ... #Algorithm #Differential