7 results
Hypernatremia Differential Diagnosis Algorithm - Diabetes Insipidus Workup

Step #1 - Consider the history
Step #2 - Assess
Hypernatremia Differential ... Diagnosis Algorithm ... Workup Step ... Hypernatremia #Management ... #Algorithm #Sodium
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
Diagnosis Algorithm ... water loss, Serum Sodium ... 145 mmol/L High Urine ... glucosuria Low Urine ... kg • Diabetes Insipidus
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Diagnosis Workup ... Algorithm 1) ... Check Urine Osmolality ... Euvolemic: Diabetes insipidus ... #sodium
Diabetes Insipidus - Diagnosis Algorithm
Tests:
 • Osmolality, Urine AND/OR
 • Osmolality, Serum or Plasma AND
 •
Diabetes Insipidus ... • Osmolality, Urine ... Plasma AND • Sodium ... + Osmolality, Urine ... #nephrology #differential
Primary Polydipsia
Definition: Excessive volitional water intake
Epidemiology:
 • 6-20% of patients with psychiatric disorders - Most commonly
deficits impairing urine ... Differential Diagnosis ... intoxication Initial Workup ... : Serum Osm, Urine ... , Urine Sodium
Hypernatremia - Differential Diagnosis and Treatment
Hypernatremia is almost always due to unreplaced water loss (free water
history, exam, and urine ... DI; high dilute urine ... post-obstructive 3) Diabetes Insipidus ... Diagnosis #Treatment #management ... #nephrology #sodium
Hyponatremia - Diagnosis and Treatment
Hyponatremia is usually caused by the inability to excrete water normally.
3 questions to work ... approach to the differential ... Measure urine osmolality ... Diagnosis #Treatment #management ... #nephrology #sodium