56 results
Hematuria Workup and Diagnosis Algorithm
 • Confirm hematuria → Urinalysis >3 RBCs/HPF, exclude mimics, repeat testing
, dysmorphic RBCs ... → Refer to Nephrology ... for renal biopsy ... cystoscopy • Refer to Nephrology ... if cause not identified
Hematuria - Differential Diagnosis Framework

Gross Hematuria: Red/Dark urine
 • 1ml blood/liter urine can induce color change
Hematuria: Red/Dark urine ... 1ml blood/liter urine ... vasculitis - Dysmorphic ... #urology #nephrology ... #renal #urine #
Atlas of Urine Microscopy Findings
 • Epithelial cells - Normal
 • Renal tubular cells - Acute
Atlas of Urine Microscopy ... urinary tract • Dysmorphic ... also be seen if urine ... contamination #Urine ... key #diagnosis #nephrology
Urine Microscopy and Casts - Image Atlas Key

- Squamous Epithelial Casts
- Transitional Epithelial Cells
- Renal Tubular
Urine Microscopy ... and Casts - Image ... Epithelial Cells - Renal ... Monomorphic RBCs - Dysmorphic ... JoseTesser) #Urine
Nephritic vs Nephrotic Syndrome

Step 1: If the patient has hematuria and/or proteinuria, think about nephrotic/nephritic syndromes.
Step
hematuria (RBC casts ... or dysmorphic RBCs ... in urine)? ... Comparison #Algorithm #Nephrology
Acute Kidney Injury - AKI Workup Algorithm and Differential Diagnosis
Baseline Investigations: full blood count with differential,
differential, urine ... dipstick, urine ... osmolarity If cause ... Differential #Diagnosis #nephrology ... #causes
Polyuria - Differential Diagnosis Algorithm
Urine Output > 3L /day
Water Diuresis (Urine Osm <100 mOsm/kg)
 • Primary
Diagnosis Algorithm Urine ... Water Diuresis (Urine ... Dl • Chronic Renal ... Diagnosis #Algorithm #causes ... #nephrology
Urine Microscopy Instructions
1) Spin fresh urine sample (10-15mL) in a centrifuge for 3-5 minutes - Don't
Urine Microscopy ... Instructions 1) ... under lower power (casts ... #Microscopy #Instructions ... #nephrology #diagnosis
Approach to Hypomagnesemia 

Fractional excretion of magnesium = (urine magnesium x serum creatinine)/ [0.7 (serum magnesium
of magnesium = (urine ... serum magnesium x urine ... cells FEMg >4% = renal ... differential #diagnosis #causes ... #nephrology #magnesium
Distal Renal Tubular Acidosis (RTA)  Type 1 

Totally scuppers the kidney's acidification mechanism. Will be
Distal Renal Tubular ... diagnosis with direct urine ... Failure to acidify urine ... Diagnosis #Management #Nephrology ... #Causes #Differential