9 results
Hypernatremia Differential Diagnosis Algorithm - Diabetes Insipidus Workup

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

Instead (or in addition) of volume status examination, check urine sodium and serum
True Hyponatremia ... Differential Algorithm ... @kidney_boy #True ... Differential #Algorithm ... #Diagnosis #Nephrology
Causes of Hypernatremia - Differential Diagnosis
Inadequate water intake:
 • Lack of access to water
Extrarenal hypotonic fluid
Causes of Hypernatremia ... insipidus • Nephrogenic ... diabetes insipidus ... Diagnosis #Causes #nephrology ... #sodium #high
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
Differential Diagnosis Algorithm ... water loss, Serum Sodium ... 300 mmol/kg • Diabetes ... Insipidus Hypodipsia ... #Nephrology #Differential
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Diagnosis Workup Algorithm ... • Euvolemic: Diabetes ... insipidus (central ... Diagnosis #Workup #Algorithm ... #nephrology #sodium
Hypernatremia Diagnosis and Workup

Step 1 . Repeat the sodium concentration.
Step 2.  Check plasma osmolality.
NORMAL PLASMA
Hypernatremia Diagnosis ... Repeat the sodium ... < 285 mmol/L - true ... Diagnosis #Workup #Algorithm ... #Nephrology
Diabetes Insipidus - Diagnosis Algorithm
Tests:
 • Osmolality, Urine AND/OR
 • Osmolality, Serum or Plasma AND
 •
Diabetes Insipidus ... - Diagnosis Algorithm ... Plasma AND • Sodium ... #Insipidus #Diagnosis ... #Algorithm #nephrology
Primary Polydipsia
Definition: Excessive volitional water intake
Epidemiology:
 • 6-20% of patients with psychiatric disorders - Most commonly
• Symptomatic hyponatremia ... Diagnosis: Diabetes ... Insipidus, Impaired ... , Urine Sodium ... diagnosis #management #nephrology
Hypernatremia - Differential Diagnosis and Treatment
Hypernatremia is almost always due to unreplaced water loss (free water
Hypernatremia - ... post-obstructive 3) Diabetes ... Insipidus: neurogenic ... Treatment #management #nephrology ... #sodium