63 results
Causes of Hypernatremia - Differential Diagnosis
Inadequate water intake:
 • Lack of access to water
Extrarenal hypotonic fluid
Causes of Hypernatremia ... - Differential Diagnosis ... insipidus • Nephrogenic ... #Causes #nephrology ... #sodium #high
True Hyponatremia Differential Algorithm

Instead (or in addition) of volume status examination, check urine sodium and serum
low, uric acid ... high in hypovolemic ... low in euvolemic ... Differential #Algorithm #Diagnosis ... #Nephrology
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
Hypokalemia - Differential ... Diagnosis Algorithm ... • HTN, High Aldosterone ... #Algorithm #causes ... #nephrology
Hypokalemia Differential Diagnosis Algorithm
Hypertensive:
 • High Al, Low R - Primary aldosteronism
 • High Al, High
Hypokalemia Differential ... Diagnosis Algorithm ... #Hypokalemia # ... #Algorithm #nephrology ... #causes #low #potassium
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Differential Diagnosis ... • Euvolemic (Low ... , Cushing syndrome ... Workup #Algorithm #nephrology ... #sodium
Hyponatremia Differential Diagnosis Algorithm - Utilizing Uric Acid 
ADH promotes Urea/uric acid excretion along with water
Hyponatremia Differential ... Diagnosis Algorithm ... Acid → SIADH - High ... #Algorithm #nephrology ... #sodium #low #uricacid
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
Causes of Hypernatremia ... water loss, Serum Sodium ... >145 mmol/L High ... mannitol, glucosuria Low ... #Nephrology #Differential
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
ON (UNa < 30): Hypovolemia ... Cirrhosis, Nephrotic syndrome ... Primary polydipsia, Low ... #Algorithm #diagnosis ... #sodium #nephrology
Causes of Hypokalemia - Differential Diagnosis Algorithm
Decreased intake (rare cause in isolation)
GI loss - Urine loss
Causes of Hypokalemia ... - Differential Diagnosis ... #Nephrology #Differential ... #Diagnosis #Algorithm ... #Causes
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
diuresis can be high ... Present (Uosm ≥100): Hypovolemia ... Cirrhosis, Nephrotic syndrome ... #differential #diagnosis ... #nephrology