13 results
Hypernatremia Differential Diagnosis Algorithm - Diabetes Insipidus Workup

Step #1 - Consider the history
Step #2 - Assess
Differential Diagnosis Algorithm ... - Diabetes Insipidus ... Hypernatremia #Management #Algorithm ... #Sodium #nephrology ... #insipidus #DI
True Hyponatremia Differential Algorithm

Instead (or in addition) of volume status examination, check urine sodium and serum
Hyponatremia Differential Algorithm ... low, uric acid ... and uric acid low ... #Differential #Algorithm ... #Diagnosis #Nephrology
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
Differential Diagnosis Algorithm ... water loss, Serum Sodium ... mannitol, glucosuria Low ... kg • Diabetes Insipidus ... Hypernatremia #Nephrology
Hyponatremia Differential Diagnosis Algorithm - Utilizing Uric Acid 
ADH promotes Urea/uric acid excretion along with water
Differential Diagnosis Algorithm ... Osmolarity 3) Urine Sodium ... Uric Acid - Low ... #nephrology #sodium ... #low #uricacid
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Diagnosis Workup Algorithm ... • Euvolemic (Low ... Euvolemic: Diabetes insipidus ... Diagnosis #Workup #Algorithm ... #nephrology #sodium
Polyuria - Differential Diagnosis Algorithm
Polyuria = >3L Urine output / 24 hours
Urine osmolality = 2 (Na
Differential Diagnosis Algorithm ... nutrition), Azotemia LOW ... kg • Diabetes Insipidus ... Differential #Diagnosis #Algorithm ... #nephrology
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
Modified Hyponatremia Algorithm ... Primary polydipsia, Low ... #Hyponatremia #Algorithm ... #diagnosis #sodium ... #nephrology
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
Hypothyroidism, Low ... #Hyponatremia #algorithm ... #diagnosis #sodium ... #low #nephrology
Diabetes Insipidus - Diagnosis Algorithm
Tests:
 • Osmolality, Urine AND/OR
 • Osmolality, Serum or Plasma AND
 •
Diabetes Insipidus ... - Diagnosis Algorithm ... Plasma AND • Sodium ... #Diagnosis #Algorithm ... #nephrology #differential
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
normal volume-based algorithm ... : SIADH, Renal Sodium ... can be high or low ... Primary polydipsia), Low ... #nephrology