27 results
Algorithmic Approach to Acute Interstitial Nephritis
When to suspect AIN? (not sensitive)
 • AKI, AKD, rapidly progressive
sensitive) • AKI ... sterile pyuria, WBC casts ... proteinuria, granular casts ... AIN #Algorithm #nephrology ... #diagnosis
Causes of Acute Kidney Injury (AKI) - Differential Diagnosis Algorithm
Acute Kidney Injury (AKI) - Acute increase
Causes of Acute ... Epithelial cell casts ... Interstitial Nephritis ... #Nephrology #Differential ... #Causes
General approach to AKI - Checklist

Urine electrolytes & FENa - Previously, it was believed that urine
General approach to AKI ... performance for diagnosing ... acute tubular interstitial ... nephritis ... AcuteKidneyInjury #Nephrology
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
Acute Kidney Injury - AKI Workup Algorithm and Differential Diagnosis
Baseline Investigations: full blood count with differential,
Acute Kidney Injury ... and Differential Diagnosis ... osmolarity If cause ... • Interstitial nephritis ... #nephrology #causes
Acute Kidney Injury - Differential Diagnosis Framework
PRERENAL:
 - Intrarenal vasoconstriction-hemodynamically mediated
 - Systemic vasodilation
 - Volume
white blood cell casts ... tubular cell casts ... or pigmented casts ... underlying cause ... Kidney #Injury #AKI
Atlas of Urine Microscopy Findings
 • Epithelial cells - Normal
 • Renal tubular cells - Acute
microscopy • Red cell casts ... • White cell casts ... • Hyaline casts ... disease • Granular casts ... #nephrology #casts
Urine Microscopy - Casts
Acellular Casts
 • Hyaline Casts - Consists of only precipitated Tamm-Horsfell protein without
Urine Microscopy ... suggestive of acute ... suggestive of nephrotic ... #nephrology #interpretation ... #diagnosis
Hematuria Workup and Diagnosis Algorithm
 • Confirm hematuria → Urinalysis >3 RBCs/HPF, exclude mimics, repeat testing
mimics, repeat testing ... • Acute onset ... proteinuria, RBC casts ... for renal biopsy ... if cause not identified
Simplified Approach to Acute Kidney Injury (AKI)
1) IS THIS AN EMERGENCY? 
Is there a dialysis indication
Simplified Approach to Acute ... cases are caused ... IMPROVEMENT If the urine ... for WBCs, RBCs, casts ... #nephrology