24 results
Polyuria - Differential Diagnosis Algorithm
Urine Output > 3L /day
Water Diuresis (Urine Osm <100 mOsm/kg)
 • Primary
Polyuria - Differential ... Diagnosis Algorithm ... solute load #Polyuria ... Differential #Diagnosis #Algorithm ... #causes #nephrology
Polyuria - Differential Diagnosis Algorithm
Polyuria = >3L Urine output / 24 hours
Urine osmolality = 2 (Na
Diagnosis Algorithm ... Polyuria = >3L ... mosm/kg • Solute Diuresis ... nutrition), Azotemia LOW ... Differential #Diagnosis #Algorithm
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
Differential Diagnosis Algorithm ... administration • Osmotic diuresis ... (see Polyuria scheme ... mannitol, glucosuria Low ... Differential #Diagnosis #Algorithm
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
Excessive GI losses ... Post-obstructive diuresis ... Differential #Diagnosis #Low ... Magnesium #Table #Classification ... #Causes #Workup
Hypokalemia - Differential Diagnosis
Poor Intake 
 - Starvation
 - Anorexia
GI Losses 
 - Vomiting / NG
- Anorexia GI Losses ... Amphotericin B - Polyuria ... Differential #Diagnosis #Low ... Potassium #Table #Classification ... #Causes
Causes of Polyuria - Differential Diagnosis Algorithm
Polyuria - Urine Output > 3L/day, Increased Urine Volume (>2ml/min)
Osmotic
Causes of Polyuria ... Differential Diagnosis Algorithm ... /min) Osmotic Diuresis ... Differential #Diagnosis #Algorithm ... #Causes
Causes of Polyuria - Differential Diagnosis
Excess Intake of Water:
 • Primary polydipsia (a.k.a. "psychogenic polydipsia")
 •
Causes of Polyuria ... a.k.a. osmotic diuresis ... • Central Dl (Low ... Hypercalcemia Polyuria ... EricsMedicalLectures/ #Polyuria
Hypokalemia Differential Diagnosis Algorithm

Low intake 
• poor oral intake 

Renal loss 
• Medication 
• Hypomagnesemia 
•
Differential Diagnosis Algorithm ... Low intake ... Hypomagnesemia • Osmotic diuresis ... Differential #Diagnosis #Algorithm ... #Causes #Classification
Workup for Hypophosphatemia - Differential Diagnosis Framework
Rule out spurious hypophosphatemia: paraproteinemia, acute leukemia
Measure Urine Fractional Excretion
Workup for Hypophosphatemia ... • Normal or Low ... - Normal or Low ... Inh., Osmotic diuresis ... Diagnosis #Framework #Workup
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Differential Diagnosis Workup ... Algorithm 1) ... • Euvolemic (Low ... osmotic (solute) diuresis ... #Algorithm #nephrology