13 results
Atlas of Urine Microscopy Findings
 • Epithelial cells - Normal
 • Renal tubular cells - Acute
Atlas of Urine Microscopy ... fresh at time of microscopy ... glomerular disease • Leukocytes ... - Some crystals ... key #diagnosis #nephrology
Causes of Dysuria - Differential Diagnosis Algorithm
Pyuria - Leukocytes on Dipstick/Microscopy
 - Bacteriuria & Hematuria -
Differential Diagnosis Algorithm ... Pyuria - Leukocytes ... on Dipstick/Microscopy ... Bacteriuria & Hematuria ... Pyelonephritis - WBC Casts
Algorithmic Approach to Acute Interstitial Nephritis
When to suspect AIN? (not sensitive)
 • AKI, AKD, rapidly progressive
Algorithmic Approach ... sterile pyuria, WBC casts ... eosinophiluria, microscopic ... hematuria, mild ... #nephrology #diagnosis
Nephritic vs Nephrotic Syndrome

Step 1: If the patient has hematuria and/or proteinuria, think about nephrotic/nephritic syndromes.
Step
the patient has hematuria ... have glomerular hematuria ... (RBC casts or dysmorphic ... Syndrome #Comparison #Algorithm ... #Nephrology #Diagnosis
Urinalysis & Urine Sodium 
Theophilus Protospatharius, a seventh-century physician who wrote the first manuscript focused exclusively
Microscopic exam ... • Crystals ... • Urinary casts ... #urine #UNa #casts ... #glucosuria #hematuria
Hematuria - Differential Diagnosis Framework

Gross Hematuria: Red/Dark urine
 • 1ml blood/liter urine can induce color change
urine sediment Microscopic ... urine sediment by microscopy ... pain + gross or microscopic ... : - RBC casts ... causes #urology #nephrology
Causes of Hematuria - Differential Diagnosis Algorithm
Red blood cells on urine microscopy. Must exclude false positives
Differential Diagnosis Algorithm ... cells on urine microscopy ... RBCs and/or RBC casts ... with polyangiitis/microscopic ... Differential #Diagnosis #Algorithm
Hematuria Workup and Diagnosis Algorithm
 • Confirm hematuria → Urinalysis >3 RBCs/HPF, exclude mimics, repeat testing
and Diagnosis Algorithm ... proteinuria, RBC casts ... → Refer to Nephrology ... cystoscopy • Refer to Nephrology ... #Diagnosis #Algorithm
Causes of Acute Kidney Injury (AKI) - Differential Diagnosis Algorithm
Acute Kidney Injury (AKI) - Acute increase
Epithelial cell casts ... Obstruction • Cast ... myeloma) • Urate crystals ... polyangiitis /microscopic ... #KidneyInjury #Nephrology
Urine Microscopy - Urinary Sediment Examination Instructions
Preparation of the urine for microscopic examination:
 • Clean catch
protein, blood or leukocyte ... up by cells or casts ... Ill stain) and crystals ... RBC's, lipids, crystals ... protein matrix of casts