9 results
Hypernatremia Differential Diagnosis Algorithm - Diabetes Insipidus Workup

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

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Differential Diagnosis ... Workup Algorithm ... • Euvolemic (Low ... Euvolemic: Diabetes insipidus ... #nephrology #sodium
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
Modified Hyponatremia ... (UOsm < 100): Primary ... polydipsia, Low ... #Algorithm #diagnosis ... #sodium #nephrology
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
- Differential Diagnosis ... water loss, Serum Sodium ... mannitol, glucosuria Low ... kg • Diabetes Insipidus ... #Nephrology #Differential
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
Based Approach to Hyponatremia ... Hypothyroidism, Low ... Glucocorticoid deficiency, Primary ... #algorithm #diagnosis ... #sodium #low #nephrology
Primary Polydipsia
Definition: Excessive volitional water intake
Epidemiology:
 • 6-20% of patients with psychiatric disorders - Most commonly
• Symptomatic hyponatremia ... : Diabetes Insipidus ... intoxication Initial Workup ... , Urine Sodium ... #management #nephrology
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
can be high or low ... water intake (Primary ... #differential #diagnosis ... #table #sodium ... #nephrology
Hypernatremia - Differential Diagnosis and Treatment
Hypernatremia is almost always due to unreplaced water loss (free water
Differential Diagnosis ... Diagnosis is primarily ... post-obstructive 3) Diabetes Insipidus ... Treatment #management #nephrology ... #sodium
Diuretics and Agents Regulating Renal Excretion

Carbonic Anhydrase Inhibitors (Acetazolamide, Dichlorphenamide)
 • Glaucoma
 • Epilepsy
 • Altitude
disequilibrium syndrome • Diagnosis ... kidney disease • Primary ... • Primary nocturnal ... Excretion #Diuresis #Nephrology ... #Medications #Table