8 results
Urine Microscopy - Casts
Acellular Casts
 • Hyaline Casts - Consists of only precipitated Tamm-Horsfell protein without
Urine Microscopy ... suggestive of acute ... • RBC Casts - ... #Urine #Microscopy ... #nephrology #interpretation
Hematuria - Differential Diagnosis Framework

Gross Hematuria: Red/Dark urine
 • 1ml blood/liter urine can induce color change
Microscopic ... : • Flank pain ... : - RBC casts ... : • Urethritis ... causes #urology #nephrology
Hematuria Workup and Diagnosis Algorithm
 • Confirm hematuria → Urinalysis >3 RBCs/HPF, exclude mimics, repeat testing
repeat testing • Acute ... unilateral flank pain ... WBCs, or urine ... casts, dysmorphic ... → Refer to Nephrology
Algorithmic Approach to Acute Interstitial Nephritis
When to suspect AIN? (not sensitive)
 • AKI, AKD, rapidly progressive
Algorithmic Approach to Acute ... sterile pyuria, WBC ... casts, eosinophiluria ... , microscopic hematuria ... #Algorithm #nephrology
Simplified Approach to Acute Kidney Injury (AKI)
1) IS THIS AN EMERGENCY? 
Is there a dialysis indication
Simplified Approach to Acute ... e.g AEIOU ) or anuria ... IMPROVEMENT If the urine ... Assess UA w/ microscopy ... for WBCs, RBCs,
Urinalysis & Urine Sodium 
Theophilus Protospatharius, a seventh-century physician who wrote the first manuscript focused exclusively
Microscopic exam ... Red blood cells (RBC ... • Urinary casts ... Acute Kidney Injury ... #hematuria
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
Classification: • Acute ... Pleural effusions • Acute ... non-nephrotic proteinuria, hematuria ... edema, active urine ... lymphopenia, low PLT • Anemia
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
polarized light microscopy ... the presence of anemia ... Screening Tests for Acute ... Complete blood count (CBC ... • Serum and urine