25 results
Differential Diagnosis of Acute Kidney Injury 

#Diagnosis #Nephrology #AKI #Acute #KidneyInjury #Causes #Differential #Workup #Algorithm #Ddxof
of Acute Kidney ... #Nephrology #AKI ... #Causes #Differential ... #Workup #Algorithm ... #Ddxof
Causes of acute kidney injury (AKI). AKI is classified into pre-renal, renal, and post-renal causes. Renal
Causes of acute ... and interstitial disease ... #Diagnosis #AKI ... #Acute #Kidney # ... #Sites #Nephrology
Hematuria Workup and Diagnosis Algorithm
 • Confirm hematuria → Urinalysis >3 RBCs/HPF, exclude mimics, repeat testing
Hematuria Workup ... repeat testing • Acute ... • Evidence of glomerular ... proteinuria, RBC casts ... by UW IM Residency
Atlas of Urine Microscopy Findings
 • Epithelial cells - Normal
 • Renal tubular cells - Acute
glomerular disease ... • White cell casts ... infection • Hyaline casts ... • Granular casts ... #nephrology #casts
Acute Kidney Injury - Differential Diagnosis Framework
PRERENAL:
 - Intrarenal vasoconstriction-hemodynamically mediated
 - Systemic vasodilation
 - Volume
Acute Kidney Injury ... INTRINSIC: - Glomerular ... white blood cell casts ... renal tubular cell casts ... or pigmented casts
Causes of Chronic Kidney Disease - Differential Diagnosis Algorithm
Decreased kidney function (eGFR < 60 ml/min/1.73 m2)
Causes of Chronic ... Kidney Disease ... - Differential Diagnosis ... Atherosclerosis Glomerular ... Sterile pyuria, WBC casts
Acute Kidney Injury - Classification
Prerenal:
 • Dehydration
 • Heart failure (a.k.a. cardiorenal syndrome)
 • Liver failure
Acute Kidney Injury ... - TTP/HUS • Glomerular ... necrosis (causes ... Classification #diagnosis ... #nephrology
Urine Microscopy - Casts
Acellular Casts
 • Hyaline Casts - Consists of only precipitated Tamm-Horsfell protein without
suggestive of acute ... in a variety of acute ... and chronic kidney ... diseases • Fatty ... interpretation #diagnosis
Algorithm and Differential Diagnosis of Macroscopic Hematuria
Important Historical Elements:
- Painless: suggests malignancy
- Painful: suggests calculi/infection
- Urinalysis:
and Differential Diagnosis ... RBC’s, RBC/WBC casts ... intrinsic renal disease ... #EM #IM #Urology ... Differential #Algorithm #Ddxof
Simplified Approach to Acute Kidney Injury (AKI)
1) IS THIS AN EMERGENCY? 
Is there a dialysis indication
Kidney Injury ( ... PROBLEM ~80% of AKI cases ... for WBCs, RBCs, casts ... KidneyInjury #simplified #workup ... #diagnosis #nephrology