21 results
Water Deprivation Test - Differential Diagnosis of Diabetes Insipidus (DI)
Concept of WDT: endogenous vasopressin secretion is
Water Deprivation Test ... - Differential ... Diagnosis of Diabetes ... Insipidus (DI) ... #Insipidus #DI
Hypernatremia Differential Diagnosis Algorithm - Diabetes Insipidus Workup

Step #1 - Consider the history
Step #2 - Assess
Hypernatremia Differential ... Diagnosis Algorithm - Diabetes ... Insipidus Workup ... & desmopressin test ... #insipidus #DI
Two-step Copeptin algorithm for differential diagnosis of Diabetes Insipidus (DI)

Baseline Copeptin < 21.4 pmol/L:
 • Arginine-stimulated
diagnosis of Diabetes ... Insipidus (DI) ... #Diabetes #Insipidus ... #copeptin #nephrology ... #differential #
Central vs Nephrogenic Diabetes Insipidus - Desmopressin Challenge
Give desmopressin (intranasal, SQ, IV) and monitor UOsm every
vs Nephrogenic Diabetes ... Insipidus - Desmopressin ... #Nephrogenic #Diabetes ... #Insipidus #DI ... Challenge #diagnosis #nephrology
Causes of Polyuria - Differential Diagnosis Algorithm
Polyuria - Urine Output > 3L/day, Increased Urine Volume (>2ml/min)
Osmotic
of Polyuria - Differential ... Water Deprivation Test ... Water Deprivation Test ... Insipidus - DDAVP ... #Nephrology #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
Causes of Polyuria - Differential Diagnosis
Excess Intake of Water:
 • Primary polydipsia (a.k.a. "psychogenic polydipsia")
 •
of Polyuria - Differential ... Poorly controlled diabetes ... Diabetes Insipidus ... • Nephrogenic DI ... Diagnosis #Causes #nephrology
Classification of Diabetes Insipidus

Central or neurogenic diabetes insipidus:
 - Congenital - Structural malformations affecting the hypothalamus
Insipidus Central ... insipidus: - ... #Diabetes #Insipidus ... Classification #Types #Nephrology ... #Diagnosis #Differential
Causes of Peripheral Weakness with Sensory Changes - Differential Diagnosis Algorithm
Radiculopathy:
 • Disc
 • Spondylosis
 •
Sensory Changes - Differential ... Carpal Tunnel • Ulnar ... Dependent): • Diabetes ... Weakness #Sensory #Neurology ... #Differential #