17 results
Hypernatremia Differential Diagnosis Algorithm - Diabetes Insipidus Workup

Step #1 - Consider the history
Step #2 - Assess
Hypernatremia Differential ... Algorithm - Diabetes Insipidus ... & desmopressin test ... 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 ... Water Deprivation Test ... Water Deprivation Test ... #Polyuria #Nephrology ... #Differential #
Urine Specific Gravity - Interpretation
Specific Gravity = Density of urine / Density of water
SG close to
hydration • Diabetes insipidus ... Dehydration • SIADH (syndrome ... Interpretation #diagnosis #differential ... #nephrology
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Hypernatremia - Differential ... Euvolemic: Diabetes insipidus ... Hypervolemic: Conn syndrome ... , Cushing syndrome ... Workup #Algorithm #nephrology
Diabetes Insipidus - Diagnosis Algorithm
Tests:
 • Osmolality, Urine AND/OR
 • Osmolality, Serum or Plasma AND
 •
Diabetes Insipidus ... Diagnosis Algorithm Tests ... Water deprivation test ... Diagnosis #Algorithm #nephrology ... #differential
Inherited Defects in Kidney Tubule Epithelial Cells

Renal glucosuria - Na+-dependent glucose cotransporter
Cystinuria - Amino acid transporter
Bartter
limb Gitelman syndrome ... tubule Liddle syndrome ... Nephrogenic diabetes insipidus ... Defects #Kidney #Nephrology ... #Diagnosis #Differential
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
Pulmonary Renal Syndrome ... symptomatology Differential ... , biopsy By Tess ... #differential # ... diagnosis #nephrology
Behçet's Syndrome
Systemic disease associated with inflammation of multiple organs, small-vessel vasculitis and large-vessel vasculopathy
Epidemiology:
 • Young
skin injury) • Neurologic ... pathognomonic laboratory tests ... Positive pathergy test ... is a skin prick test ... Behcet disease) Differential
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
constipation Differential ... • Provocative Tests ... absent anal wink test ... #differential # ... diagnosis #causes #neurology
Hearing Loss - Differential Diagnosis Framework

Hearing Loss Types:
• Conductive
• Sensorineural
• Mixed
Presbycusis is the most common type
Hearing Loss - Differential ... include a: • Neurologic ... tympanic membrane • Neurologic ... II ○ Susac’s syndrome ... Hearing #Loss #Differential