23 results
Atlas of Urine Microscopy Findings
 • Epithelial cells - Normal
 • Renal tubular cells - Acute
glomerular disease • Leukocytes ... • White cell casts ... disease • Granular casts ... crystals may indicate metabolic ... #nephrology #casts
Urinary Casts and Disease Associations
Hyaline - May be nonspecific; seen in normal individuals or during severe
Urinary Casts and ... and concentrated urine ... breakdown of cellular casts ... heme-granular casts ... #Casts #Differential
Urinalysis & Urine Sodium 
Theophilus Protospatharius, a seventh-century physician who wrote the first manuscript focused exclusively
• Ketones • Leukocyte ... • Urinary casts ... : • White blood ... dipstick #nitrite #leucocyte-esterase ... #urine #UNa #casts
Hematuria - Differential Diagnosis Framework

Gross Hematuria: Red/Dark urine
 • 1ml blood/liter urine can induce color change
• 1ml blood/liter ... clots ➔ Lower Urinary ... hematuria: - RBC casts ... #nephrology #renal ... #urine #blood
Hypokalemia Evaluation Algorithm

Before evaluating hypokalemia, life threatening complications such as arrhythmias and paralysis should be looked
A urine K/Cr ratio ... • Diarrhea A urine ... mEq/g suggests urinary ... #Hypokalemia #diagnosis ... differential #potassium #nephrology
Hematuria Workup and Diagnosis Algorithm
 • Confirm hematuria → Urinalysis >3 RBCs/HPF, exclude mimics, repeat testing
Hematuria Workup and Diagnosis ... proteinuria, RBC casts ... → Refer to Nephrology ... if cause not identified ... Workup #urology #blood
Metabolic Alkalosis - Urinary Chloride Algorithm
Cl- responsive metabolic alkalosis
 • Kidney loss of Cl-
- Urinary Chloride ... • Normal/low blood ... the indicated causes ... #nephrology #differential ... #diagnosis
Simplified Approach to Acute Kidney Injury (AKI)
1) IS THIS AN EMERGENCY? 
Is there a dialysis indication
circulating volume, Urinary ... PROBLEM ~80% of AKI cases ... IMPROVEMENT If the urine ... for WBCs, RBCs, casts ... #nephrology
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted - 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting,
Primary Metabolic ... - Differential Diagnosis ... (late) • High Urine ... #Algorithm #Nephrology ... #Causes
Intraoperative Sepsis - Guidelines for Crises in Anaesthesia

Severe sepsis (hypotension persisting after initial fluid challenge of
Intraoperative Sepsis ... likely underlying cause ... D). ❿ Insert urinary ... record hourly urine ... #Checklist #Diagnosis