16 results
True Hyponatremia Differential Algorithm

Instead (or in addition) of volume status examination, check urine sodium and serum
Differential Algorithm ... uric acid high in hypovolemic ... and hypervolemic ... #Differential #Algorithm ... #Diagnosis #Nephrology
Differential Diagnosis and Evaluation of Hyponatremia:
1) Identification of onset (acute vs. chronic)
2) Presence of symptoms (HA,
and Evaluation ... of Hyponatremia: ... acute vs. chronic) 2) ... #EM #IM #Nephro ... #Differential #Algorithm
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Differential Diagnosis ... Workup Algorithm ... renal mechanism 2) ... #Workup #Algorithm ... #nephrology #sodium
Hypernatremia Diagnosis and Workup

Step 1 . Repeat the sodium concentration.
Step 2.  Check plasma osmolality.
NORMAL PLASMA
Hypernatremia Diagnosis ... Repeat the sodium ... Step 2. ... HYPOVOLEMIC • ... #Algorithm #Nephrology
Hyponatremia - Differential Diagnosis Algorithm
Hypovolemic - Give volume
Hypervolemic (Edematous) - Look for and treat underlying cause
Diagnosis Algorithm ... Hypovolemic - Give ... , CNS Disease, Meds ... #Algorithm #diagnosis ... #nephrology #sodium
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
Based Approach to Hyponatremia ... Hypovolemic, Serum ... Primary polydipsia Hypervolemic ... #algorithm #diagnosis ... #sodium #low #nephrology
Cerebral Salt Wasting vs SIADH - Pathophysiology 
1) Neurological event
2) Sodium loss from tubules
3) Naturiesis →
Neurological event 2) ... Sodium loss from ... 4) Hypovolaemia ... Pathophysiology #diagnosis ... #nephrology #hyponatremia
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
Modified Hyponatremia ... Algorithm Hypertonic ... ON (UNa < 30): Hypovolemia ... #Algorithm #diagnosis ... #sodium #nephrology
Hypernatremia - Diagnostic Evaluation Algorithm
Step 1: Consider history. Most patients presenting with hypernatremia are either very
Diagnostic Evaluation ... Algorithm Step ... Step 2: Check Uosm ... #Evaluation #Algorithm ... #Sodium
Hyponatremia Diagnosis Algorithm
UOsm ≥ POsm - Vasopressin-Dependent
 • UNa < 20 mEq/L - Appropriate (↓ EABV)
Hyponatremia Diagnosis ... Algorithm UOsm ... EABV) - Consider: Hypovolemia ... Helbert Rondon, MD @NephroMD ... #nephrology