16 results
Polyuria - Differential Diagnosis Algorithm
Urine Output > 3L /day
Water Diuresis (Urine Osm <100 mOsm/kg)
 • Primary
Polyuria - Differential ... Diagnosis Algorithm ... #Differential # ... Diagnosis #Algorithm ... #causes #nephrology
Causes of Polyuria - Differential Diagnosis
Excess Intake of Water:
 • Primary polydipsia (a.k.a. "psychogenic polydipsia")
 •
- Differential ... Diagnosis Excess ... a.k.a. osmotic diuresis ... #Differential # ... #nephrology
Polyuria - Differential Diagnosis Algorithm
Polyuria = >3L Urine output / 24 hours
Urine osmolality = 2 (Na
Polyuria - Differential ... Diagnosis Algorithm ... mosm/kg • Solute Diuresis ... #Differential # ... #nephrology
Hypokalemia - Differential Diagnosis
Poor Intake 
 - Starvation
 - Anorexia
GI Losses 
 - Vomiting / NG
Hypokalemia - Differential ... Diagnosis Poor ... Urinary Losses - Diuretics ... Amphotericin B - Polyuria ... #Potassium #Table
Causes of Polyuria - Differential Diagnosis Algorithm
Polyuria - Urine Output > 3L/day, Increased Urine Volume (>2ml/min)
Osmotic
- Differential ... Diagnosis Algorithm ... /min) Osmotic Diuresis ... #Nephrology #Differential ... #Diagnosis #Algorithm
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
Hypernatremia - Differential ... Diagnosis Algorithm ... administration • Osmotic diuresis ... (see Polyuria scheme ... Hypernatremia #Nephrology
Causes of Hypokalemia
Transcellular Shifts:
 - Alkalosis, Increased plasma insulin (treatment of diabetic ketoacidosis), ß-Adrenergic agonists, Hypokalemic
plasma insulin (treatment ... thiazide-like diuretics ... , Osmotic diuresis ... Hypokalemia #Causes #differential ... #diagnosis #nephrology
Diuretics and Agents Regulating Renal Excretion

Carbonic Anhydrase Inhibitors (Acetazolamide, Dichlorphenamide)
 • Glaucoma
 • Epilepsy
 • Altitude
Diuretics and Agents ... disequilibrium syndrome • Diagnosis ... Tolvaptan) • Treatment ... #Nephrology #Pharmacology ... #Medications #Table
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
Renal Sodium loss (diuretics ... (AKI, Post-AKI diuresis ... #Hyponatremia #differential ... #diagnosis #table ... #sodium #nephrology
Urine chemistry tests for the diagnostic evaluation of a patient with polyuria
UOsm <100 mOsm/Kg (H2O diuresis)
tests for the diagnostic ... a patient with polyuria ... - Mannitol #polyuria ... #differential # ... diagnosis #nephrology