16 results
Classification of Diabetes Insipidus

Central or neurogenic diabetes insipidus:
 - Congenital - Structural malformations affecting the hypothalamus
Classification of ... Diabetes Insipidus ... #Diabetes #Insipidus ... #Types #Nephrology ... #Diagnosis #Differential
Causes of Hypernatremia - Differential Diagnosis
Inadequate water intake:
 • Lack of access to water
Extrarenal hypotonic fluid
Hypernatremia - Differential ... diuresis • Central diabetes ... insipidus • Nephrogenic ... diabetes insipidus ... Diagnosis #Causes #nephrology
Polyuria - Differential Diagnosis Algorithm
Urine Output > 3L /day
Water Diuresis (Urine Osm <100 mOsm/kg)
 • Primary
Polyuria - Differential ... Polydipsia • Central Diabetes ... Insipidus • Nephrogenic ... Diabetes Insipidus ... Algorithm #causes #nephrology
Hypernatremia Differential Diagnosis Algorithm - Diabetes Insipidus Workup

Step #1 - Consider the history
Step #2 - Assess
Hypernatremia Differential ... Diagnosis Algorithm - Diabetes ... Insipidus Workup ... Algorithm #Sodium #nephrology ... #insipidus #DI
Causes of Polyuria - Differential Diagnosis Algorithm
Polyuria - Urine Output > 3L/day, Increased Urine Volume (>2ml/min)
Osmotic
of Polyuria - Differential ... (Uncontrolled Diabetes ... Insipidus - DDAVP ... Insipidus #Polyuria ... #Nephrology #Differential
Polyuria - Differential Diagnosis Algorithm
Polyuria = >3L Urine output / 24 hours
Urine osmolality = 2 (Na
Polyuria - Differential ... 100 mosm/kg • Diabetes ... Insipidus • Primary ... Polydipsia #Polyuria #Differential ... Diagnosis #Algorithm #nephrology
Urine Specific Gravity - Interpretation
Specific Gravity = Density of urine / Density of water
SG close to
Excessive hydration • Diabetes ... insipidus (deficiency ... Interpretation #diagnosis #differential ... #nephrology
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
Hypernatremia - Differential ... 300 mmol/kg • Diabetes ... Insipidus Hypodipsia ... Hypernatremia #Nephrology ... #Differential #
Causes of Polyuria - Differential Diagnosis
Excess Intake of Water:
 • Primary polydipsia (a.k.a. "psychogenic polydipsia")
 •
of Polyuria - Differential ... Poorly controlled diabetes ... Diabetes Insipidus ... #Polyuria #Differential ... Diagnosis #Causes #nephrology
Hypernatremia - Differential Diagnosis Workup Algorithm

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