22 results
Causes of Hypernatremia - Differential Diagnosis
Inadequate water intake:
 • Lack of access to water
Extrarenal hypotonic fluid
Causes of Hypernatremia ... concentrating defect: • Diuretics ... • Osmotic diuresis ... #Causes #nephrology ... #sodium #high
Hypernatremia Classification and Features According to Volume Status
 - Hypervolemic hypernatremia - Cushing's syndrome, Primary hyperaldosteronism,
hypernatremia - Osmotic diuretic ... , Loop diuretics ... Postobstructive diuresis ... #Comparison #Table ... #Nephrology
Diuretics and Agents Regulating Renal Excretion

Carbonic Anhydrase Inhibitors (Acetazolamide, Dichlorphenamide)
 • Glaucoma
 • Epilepsy
 • Altitude
Diuretics and Agents ... disequilibrium syndrome • Diagnosis ... Kidney stones caused ... #Nephrology #Pharmacology ... #Medications #Table
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
Loop and thiazide diuretics ... Hypokalemia - Osmotic diuresis ... Post-obstructive diuresis ... #Classification ... #Causes #Workup
Polyuria - Differential Diagnosis Algorithm
Urine Output > 3L /day
Water Diuresis (Urine Osm <100 mOsm/kg)
 • Primary
3L /day Water Diuresis ... Insipidus Mixed Diuresis ... Failure Solute Diuresis ... #Algorithm #causes ... #nephrology
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Workup Algorithm ... • Hypovolemic: Diuretics ... osmotic (solute) diuresis ... • Euvolemic: Diabetes ... #nephrology #sodium
Causes of Hyponatremia - Differential Diagnosis Algorithm
Hypovolemia, UNa > 20: 
 • Renal losses, Diuretic excess,
Renal losses, Diuretic ... Ketonuria, Osmotic diuresis ... , UNa < 20 • Nephrotic ... #Algorithm #Causes ... #nephrology
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
loss (diuretics ... deficiency, Post-AKI diuresis ... (AKI, Post-AKI diuresis ... #table #sodium ... #nephrology
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
failure, Cirrhosis, Nephrotic ... > 30): SIADH, Medications ... (diuretics), Hypothyroidism ... #diagnosis #sodium ... #nephrology
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
water loss, Serum Sodium ... administration • Osmotic diuresis ... 300 mmol/kg • Diabetes ... Hypernatremia #Nephrology ... #Algorithm #Causes