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

Gross Hematuria: Red/Dark urine
 • 1ml blood/liter urine can induce color change
Hematuria - Differential ... urine • 1ml blood ... : - RBC casts ... Diagnosis #causes ... #urology #nephrology
Causes of Dysuria - Differential Diagnosis Algorithm
Pyuria - Leukocytes on Dipstick/Microscopy
 - Bacteriuria & Hematuria -
Causes of Dysuria ... - Differential ... Diagnosis Algorithm ... Pyelonephritis - WBC Casts ... #Causes
Causes of Acute Kidney Injury (AKI) - Differential Diagnosis Algorithm
Acute Kidney Injury (AKI) - Acute increase
Causes of Acute ... (AKI) - Acute increase ... Epithelial cell casts ... polyangiitis /microscopic ... #Nephrology #Differential
Atlas of Urine Microscopy Findings
 • Epithelial cells - Normal
 • Renal tubular cells - Acute
• Red cell casts ... glomerular disease • Leukocytes ... • White cell casts ... disease • Granular casts ... #nephrology #casts
Simplified Approach to Acute Kidney Injury (AKI)
1) IS THIS AN EMERGENCY? 
Is there a dialysis indication
Simplified Approach to Acute ... cases are caused ... Assess UA w/ microscopy ... for WBCs, RBCs, casts ... #nephrology
Causes of Hematuria - Differential Diagnosis Algorithm
Red blood cells on urine microscopy. Must exclude false positives
Causes of Hematuria ... - Differential ... Diagnosis Algorithm ... Red blood cells ... RBCs and/or RBC casts
Acute Kidney Injury - Differential Diagnosis Framework
PRERENAL:
 - Intrarenal vasoconstriction-hemodynamically mediated
 - Systemic vasodilation
 - Volume
cell casts on UA ... renal tubular cell casts ... or pigmented casts ... treating underlying cause ... Kidney #Injury #AKI
Hematuria Workup and Diagnosis Algorithm
 • Confirm hematuria → Urinalysis >3 RBCs/HPF, exclude mimics, repeat testing
and Diagnosis Algorithm ... repeat testing • Acute ... proteinuria, RBC casts ... → Refer to Nephrology ... Workup #urology #blood
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