15 results
Hypernatremia Differential Diagnosis Algorithm - Diabetes Insipidus Workup

Step #1 - Consider the history
Step #2 - Assess
Diagnosis Algorithm ... Workup Step #1 ... history Step #2 ... #Sodium #nephrology ... #insipidus #DI
Polyuria - Differential Diagnosis Algorithm
Polyuria = >3L Urine output / 24 hours
Urine osmolality = 2 (Na
Polyuria - Differential ... Diagnosis Algorithm ... Urine osmolality = 2 ... Diagnosis #Algorithm ... #nephrology
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
Diagnosis Algorithm ... water loss, Serum Sodium ... diuresis (see Polyuria ... kg • Diabetes Insipidus ... Diagnosis #Algorithm
Hyponatremia Differential Diagnosis Algorithm - Utilizing Uric Acid 
ADH promotes Urea/uric acid excretion along with water
Diagnosis Algorithm ... water retention 1) ... Serum Osmolarity 2) ... #Diagnosis #Algorithm ... #nephrology #sodium
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Algorithm 1) ... renal mechanism 2) ... Euvolemic: Diabetes insipidus ... #Algorithm #nephrology ... #sodium
Diabetes Insipidus - Diagnosis Algorithm
Tests:
 • Osmolality, Urine AND/OR
 • Osmolality, Serum or Plasma AND
 •
- Diagnosis Algorithm ... Plasma AND • Sodium ... Osmolality, Urine 1- ... #Diagnosis #Algorithm ... #nephrology #differential
Inherited Defects in Kidney Tubule Epithelial Cells

Renal glucosuria - Na+-dependent glucose cotransporter
Cystinuria - Amino acid transporter
Bartter
of epithelial sodium ... Nephrogenic diabetes insipidus ... Defects #Kidney #Nephrology ... #Diagnosis #Differential ... #Table
Hypernatremia - Differential Diagnosis and Treatment
Hypernatremia is almost always due to unreplaced water loss (free water
urine osm (in DI ... water unavailable 2) ... post-obstructive 3) Diabetes Insipidus ... #management #nephrology ... #sodium
Inflammatory Myopathies
Dermatomyositis
 • Onset: Subacute
 • Pattern: Proximal
 • CK: Up to 50X ULN
 • Autoantibodies:
anti-TIF-1, anti-NXP ... Associated Features: Weakness ... Myositis • Onset: Insidious ... Inflammatory #Myopathies #differential ... #rheumatology #table
Hyponatremia Diagnostic Algorithm
1) Check serum osmolality
2) Check urine osmolality
3) ADH Dependent - Check volume status, urine
Algorithm 1) Check ... serum osmolality 2) ... status, urine sodium ... #Algorithm #differential ... #hyponatremia #nephrology