10 results
Polyuria - Differential Diagnosis Algorithm
Urine Output > 3L /day
Water Diuresis (Urine Osm <100 mOsm/kg)
 • Primary
Polyuria - Differential ... Central Diabetes Insipidus ... /kg) • Water and ... #Differential # ... Algorithm #causes #nephrology
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
Hypernatremia - Differential ... water loss, Serum Sodium ... diuresis (see Polyuria ... kg • Diabetes Insipidus ... Hypernatremia #Nephrology
Causes of Polyuria - Differential Diagnosis
Excess Intake of Water:
 • Primary polydipsia (a.k.a. "psychogenic polydipsia")
 •
- Differential ... Diabetes Insipidus ... Mimics (↑ urine ... #Differential # ... Diagnosis #Causes #nephrology
Hypernatremia Differential Diagnosis Algorithm - Diabetes Insipidus Workup

Step #1 - Consider the history
Step #2 - Assess
Hypernatremia Differential ... @ASanchez_PS and ... Eric Strong @DrEricStrong ... Management #Algorithm #Sodium ... #nephrology #insipidus
Diabetes Insipidus - Diagnosis Algorithm
Tests:
 • Osmolality, Urine AND/OR
 • Osmolality, Serum or Plasma AND
 •
Diabetes Insipidus ... • Osmolality, Urine ... • Sodium, Plasma ... Diagnosis #Algorithm #nephrology ... #differential
Alice in Wonderland Syndrome
What? Metamorphophsia - Distortions of the visual perceptions with changes in size (micro
CNS: parietal ... lesions (e.g. stroke ... • Epilepsy • Psychiatric ... Syndrome #diagnosis #neurology ... #differential
Urine chemistry tests for the diagnostic evaluation of a patient with polyuria
UOsm <100 mOsm/Kg (H2O diuresis)
Urine chemistry ... polydipsia • Diabetes insipidus ... = UOsm - Salt and ... #differential # ... diagnosis #nephrology
Primary Polydipsia
Definition: Excessive volitional water intake
Epidemiology:
 • 6-20% of patients with psychiatric disorders - Most commonly
patients with psychiatric ... ADH suppression and ... Differential Diagnosis ... , Urine Sodium ... diagnosis #management #nephrology
Hypernatremia - Differential Diagnosis and Treatment
Hypernatremia is almost always due to unreplaced water loss (free water
urine osm (in DI ... ; high dilute urine ... post-obstructive 3) Diabetes Insipidus ... Treatment #management #nephrology ... #sodium
CNS Infections - Viral Encephalitis and Bacterial Meningitis - Differential Diagnosis Framework

Viral Encephalitis:
MCC: Enteroviruses (e.g., coxsackievirus
CNS Infections - ... meningovascular (stroke ... established by CSF or urine ... a strong indicator ... #diagnosis #neurology