53 results
Polyuria - Differential Diagnosis Algorithm
Urine Output > 3L /day
Water Diuresis (Urine Osm <100 mOsm/kg)
 • Primary
Polyuria - Differential ... Diagnosis Algorithm ... solute load #Polyuria ... #Algorithm #causes ... #nephrology
Causes of Polyuria - Differential Diagnosis Algorithm
Polyuria - Urine Output > 3L/day, Increased Urine Volume (>2ml/min)
Osmotic
Causes of Polyuria ... - Differential Diagnosis ... #Nephrology #Differential ... #Diagnosis #Algorithm ... #Causes
Polyuria - Differential Diagnosis Algorithm
Polyuria = >3L Urine output / 24 hours
Urine osmolality = 2 (Na
Polyuria - Differential ... Diagnosis Algorithm ... Polyuria = >3L ... #Differential #Diagnosis ... #Algorithm #nephrology
Causes of Polyuria - Differential Diagnosis
Excess Intake of Water:
 • Primary polydipsia (a.k.a. "psychogenic polydipsia")
 •
Causes of Polyuria ... - Differential Diagnosis ... Mimics (↑ urine ... frequency without ↑ urine ... #Causes #nephrology
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
Causes of Hypernatremia ... - Differential Diagnosis ... 145 mmol/L High Urine ... diuresis (see Polyuria ... Hypernatremia #Nephrology
Causes of Proteinuria - Differential Diagnosis Algorithm
Persistent Proteinuria >150mg/d protein present on repeat testing including overnight
Causes of Proteinuria ... - Differential Diagnosis ... #Proteinuria #Nephrology ... #Differential #Diagnosis ... #Algorithm #Causes
Hematuria Workup and Diagnosis Algorithm
 • Confirm hematuria → Urinalysis >3 RBCs/HPF, exclude mimics, repeat testing
Hematuria Workup and Diagnosis ... → Refer to Nephrology ... cystoscopy • Refer to Nephrology ... if cause not identified ... uw_IMresidency #Hematuria #Diagnosis
Hematuria - Differential Diagnosis Framework

Gross Hematuria: Red/Dark urine
 • 1ml blood/liter urine can induce color change
- Differential Diagnosis ... 1ml blood/liter urine ... → Diagnostic of ... #Differential #Diagnosis ... #nephrology #renal
Increased Urinary Frequency - Differential Diagnosis Algorithm
Non-increased urine volume (<2mL/min), Rule out polyuria
Extrinsic to Urinary Tract:
- Differential Diagnosis ... Non-increased urine ... min), Rule out polyuria ... #Differential #Diagnosis ... #Algorithm #Causes
Distal Renal Tubular Acidosis (RTA)  Type 1 

Totally scuppers the kidney's acidification mechanism. Will be
much easier to diagnosis ... with direct urine ... Failure to acidify urine ... #Management #Nephrology ... #Causes #Differential