23 results
Algorithmic Approach to Acute Interstitial Nephritis
When to suspect AIN? (not sensitive)
 • AKI, AKD, rapidly progressive
sensitive) • AKI ... sterile pyuria, WBC casts ... eosinophiluria, microscopic ... hematuria, mild ... proteinuria, granular casts
Hematuria - Differential Diagnosis Framework

Gross Hematuria: Red/Dark urine
 • 1ml blood/liter urine can induce color change
Hematuria - Differential ... urine • 1ml blood ... : - RBC casts ... #Differential # ... #urology #nephrology
Causes of Dysuria - Differential Diagnosis Algorithm
Pyuria - Leukocytes on Dipstick/Microscopy
 - Bacteriuria & Hematuria -
- Differential ... Algorithm Pyuria - Leukocytes ... on Dipstick/Microscopy ... Bacteriuria & Hematuria ... Pyelonephritis - WBC Casts
Causes of Acute Kidney Injury (AKI) - Differential Diagnosis Algorithm
Acute Kidney Injury (AKI) - Acute increase
Causes of Acute ... ) - Differential ... Epithelial cell casts ... polyangiitis /microscopic ... #Nephrology #Differential
Simplified Approach to Acute Kidney Injury (AKI)
1) IS THIS AN EMERGENCY? 
Is there a dialysis indication
Simplified Approach to Acute ... require urgent nephrology ... cases are caused ... Assess UA w/ microscopy ... for WBCs, RBCs, casts
Atlas of Urine Microscopy Findings
 • Epithelial cells - Normal
 • Renal tubular cells - Acute
• Red cell casts ... glomerular disease • Leukocytes ... • White cell casts ... key #diagnosis #nephrology ... #casts
Causes of Hematuria - Differential Diagnosis Algorithm
Red blood cells on urine microscopy. Must exclude false positives
Causes of Hematuria ... - Differential ... Algorithm Red blood ... cells on urine microscopy ... RBCs and/or RBC casts
Urinalysis & Urine Sodium 
Theophilus Protospatharius, a seventh-century physician who wrote the first manuscript focused exclusively
Microscopic exam ... • Urinary casts ... (AKI) FE Na < ... #urine #UNa #casts ... #glucosuria #hematuria
Urinary Casts and Disease Associations
Hyaline - May be nonspecific; seen in normal individuals or during severe
Urinary Casts and ... breakdown of cellular casts ... heme-granular casts ... are seen in acute ... 34t5DgJ #Urinary #Casts
Hematuria Workup and Diagnosis Algorithm
 • Confirm hematuria → Urinalysis >3 RBCs/HPF, exclude mimics, repeat testing
repeat testing • Acute ... proteinuria, RBC casts ... → Refer to Nephrology ... if cause not identified ... Workup #urology #blood