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Urinary Casts in the setting of renal disease
#Clinical #Nephro #Urine #Microscopy #Casts #Comparison #Chart #ATN #AIN
Urinary Casts in ... Clinical #Nephro #Urine ... #Microscopy #Casts ... Comparison #Chart #ATN ... #AIN #Pyelonephritis
Muddy Brown Casts in ATN
#Clinical #Path #Nephro #Urine #Microscopy #MuddyBrownCasts #ATN
Muddy Brown Casts ... in ATN #Clinical ... #Path #Nephro #Urine ... MuddyBrownCasts #ATN
Causes of Acute Kidney Injury - Differential Diagnosis Framework 
Pre-Renal
Post-Renal
Intrinsic Renal:
 • Tubules (ATN)
 • Glomerular:
Causes of Acute ... : • Tubules (ATN ... Interstitium (AIN ... #KidneyInjury #Causes
Guide to Acute Kidney Injury (AKI)

What to ask/look for: 
 - HPI, PMH, full ROS
UOP/weights - Urine ... rhabdo/TLS) Causes ... Liano 1996) - ATN ... CKD— 13% (mostly ATN ... Diagnosis #Algorithm #Causes
Urine Specific Gravity - Interpretation
Specific Gravity = Density of urine / Density of water
SG close to
Urine Specific Gravity ... Gravity = Density of urine ... resistance to ADH) • ATN ... SG fixed at ~1.010 ... EricsMedicalLectures/ #Urine
Simplified Approach to Acute Kidney Injury (AKI)
1) IS THIS AN EMERGENCY? 
Is there a dialysis indication
AKI) 1) IS THIS AN ... are caused by prerenal ... IMPROVEMENT If the urine ... CONSIDER INTRINSIC CAUSES ... etiologies due to ATN
Urine Microscopy - Casts
Acellular Casts
 • Hyaline Casts - Consists of only precipitated Tamm-Horsfell protein without
Urine Microscopy ... Casts • Hyaline ... tubular necrosis (ATN ... Contains yellow-tan ... #Urine #Microscopy
Fractional Excretion of Sodium - FENa
Fractional Excretion of Sodium (FENa) = (Urine Na+ x Serum Cr)
Sodium (FENa) = (Urine ... / (Serum Na+ x Urine ... > 2% suggests ATN
Increased Urination - Differential Diagnosis Framework - Increased Volume / Frequency
 • Increased osmotic load (Increased
load (Increased urine ... to concentrate urine ... (usually low urine ... Recovery phase of ATN ... Ann Marie Kumfer
Hematuria - Differential Diagnosis Framework

Gross Hematuria: Red/Dark urine
 • 1ml blood/liter urine can induce color change
Hematuria: Red/Dark urine ... 1ml blood/liter urine ... more RBC/HPF spun urine ... examination of urine ... • Malignant HTN