44 results
Atlas of Urine Microscopy Findings
 • Epithelial cells - Normal
 • Renal tubular cells - Acute
Atlas of Urine Microscopy ... • Red cell casts ... glomerular disease • Leukocytes ... • White cell casts ... renal disease • Granular
Urine Microscopy - Casts
Acellular Casts
 • Hyaline Casts - Consists of only precipitated Tamm-Horsfell protein without
Urine Microscopy ... but can be seen in ... ) • Granular Casts ... #Urine #Microscopy ... interpretation #diagnosis
Algorithmic Approach to Acute Interstitial Nephritis
When to suspect AIN? (not sensitive)
 • AKI, AKD, rapidly progressive
sterile pyuria, WBC casts ... eosinophiluria, microscopic ... tubular proteinuria, granular ... casts/RTE; blend ... #diagnosis
Urinary Casts and Disease Associations
Hyaline - May be nonspecific; seen in normal individuals or during severe
Urinary Casts and ... and concentrated urine ... breakdown of cellular casts ... casts are seen ... 34t5DgJ #Urinary #Casts
Causes of Dysuria - Differential Diagnosis Algorithm
Pyuria - Leukocytes on Dipstick/Microscopy
 - Bacteriuria & Hematuria -
Algorithm Pyuria ... - Leukocytes on ... Dipstick/Microscopy ... Pyelonephritis - WBC Casts ... #Algorithm #Causes
Hematuria - Differential Diagnosis Framework

Gross Hematuria: Red/Dark urine
 • 1ml blood/liter urine can induce color change
- Differential Diagnosis ... syndrome: • Flank pain ... hematuria: - RBC casts ... → Diagnostic of ... #Differential #Diagnosis
Causes of Proteinuria - Differential Diagnosis Algorithm
Persistent Proteinuria >150mg/d protein present on repeat testing including overnight
- Differential Diagnosis ... Algorithm Persistent ... sediment - WBC/RBC casts ... polyangiitis (GPA) / microscopic ... #Algorithm #Causes
Urinalysis & Urine Sodium 
Theophilus Protospatharius, a seventh-century physician who wrote the first manuscript focused exclusively
• Ketones • Leukocyte ... Microscopic exam ... • Urinary casts ... dipstick #nitrite #leucocyte-esterase ... #urine #UNa #casts
Urine Microscopy Instructions
1) Spin fresh urine sample (10-15mL) in a centrifuge for 3-5 minutes - Don't
Urine Microscopy ... 1) Spin fresh urine ... sample (10-15mL) in ... under lower power (casts ... #nephrology #diagnosis
Causes of Acute Kidney Injury (AKI) - Differential Diagnosis Algorithm
Acute Kidney Injury (AKI) - Acute increase
Acute increase in ... Epithelial cell casts ... Urate crystals • Calcium ... polyangiitis /microscopic ... #Algorithm #Causes