21 results
Polyuria - Differential Diagnosis Algorithm
Urine Output > 3L /day
Water Diuresis (Urine Osm <100 mOsm/kg)
 • Primary
Polyuria - Differential ... <100 mOsm/kg) ... solute load #Polyuria ... #Differential # ... Algorithm #causes #nephrology
Hyponatremia Diagnosis Algorithm
UOsm ≥ POsm - Vasopressin-Dependent
 • UNa < 20 mEq/L - Appropriate (↓ EABV)
Diagnosis Algorithm UOsm ... Cortisol deficiency UOsm ... Primary polydipsia, Low ... hyponatremia #diagnosis #differential ... algorithm #causes #nephrology
Polyuria - Differential Diagnosis Algorithm
Polyuria = >3L Urine output / 24 hours
Urine osmolality = 2 (Na
Polyuria - Differential ... osmolality > 300 mosm ... nutrition), Azotemia LOW ... #Differential # ... Diagnosis #Algorithm #nephrology
Urine chemistry tests for the diagnostic evaluation of a patient with polyuria
UOsm <100 mOsm/Kg (H2O diuresis)
a patient with polyuria ... UOsm <100 mOsm ... - Mannitol #polyuria ... #differential # ... diagnosis #nephrology
Causes of Polyuria - Differential Diagnosis Algorithm
Polyuria - Urine Output > 3L/day, Increased Urine Volume (>2ml/min)
Osmotic
Causes of Polyuria ... - Differential ... Loss - DDAVP -> Uosm ... Insipidus - DDAVP -> Uosm ... #Nephrology #Differential
Hypokalemia - Differential Diagnosis
Poor Intake 
 - Starvation
 - Anorexia
GI Losses 
 - Vomiting / NG
Hypokalemia - Differential ... Amphotericin B - Polyuria ... Catecholamines - Alkalosis ... #Hypokalemia #Differential ... #Diagnosis #Low
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted - 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting,
Primary Metabolic Alkalosis ... - Differential ... aldosteronism #Metabolic #Alkalosis ... #Differential # ... Diagnosis #Algorithm #Nephrology
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
• ADH Present (Uosm ... can be high or low ... Primary polydipsia), Low ... #Hyponatremia #differential ... table #sodium #nephrology
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting, NGT
Primary Metabolic Alkalosis ... - Differential ... Primary #Metabolic #Alkalosis ... #Differential # ... Diagnosis #Algorithm #nephrology
Hypokalemia - Differential Diagnosis Algorithm

Transcellular Shift:
 • Alkalosis
 • ↑ beta-2 adrenergic simulation 
 • Erythropoiesis
Hypokalemia - Differential ... Transcellular Shift: • Alkalosis ... vomiting) • Low ... Diagnosis #Algorithm #nephrology ... #low #potassium