13 results
Urinalysis & Urine Sodium 
Theophilus Protospatharius, a seventh-century physician who wrote the first manuscript focused exclusively
• Urinary casts ... excretion of Sodium (FE ... Injury (AKI) FE ... Necrosis (ATN) FE ... #UNa #casts #glucosuria
Hematuria Workup and Diagnosis Algorithm
 • Confirm hematuria → Urinalysis >3 RBCs/HPF, exclude mimics, repeat testing
and Diagnosis Algorithm ... WBCs, or urine ... proteinuria, RBC casts ... identified by UW IM ... Hematuria #Diagnosis #Algorithm
Renal Tubular Acidosis - Differential Diagnosis Algorithm
Decreased Serum K, Urine pH < 5.5 - Proximal RTA
Decreased
Differential Diagnosis Algorithm ... Decreased Serum K, Urine ... Decreased Serum K, Urine ... Jain via UNC IM ... Differential #Diagnosis #Algorithm
Algorithm and Differential Diagnosis of Macroscopic Hematuria
Important Historical Elements:
- Painless: suggests malignancy
- Painful: suggests calculi/infection
- Urinalysis:
Algorithm and Differential ... RBC’s, RBC/WBC casts ... Diagnosis #EM #IM ... #Differential #Algorithm
Nephritic vs Nephrotic Syndrome

Step 1: If the patient has hematuria and/or proteinuria, think about nephrotic/nephritic syndromes.
Step
hematuria (RBC casts ... dysmorphic RBCs in urine ... Syndrome #Comparison #Algorithm
Causes of Proteinuria - Differential Diagnosis Algorithm
Persistent Proteinuria >150mg/d protein present on repeat testing including overnight
Differential Diagnosis Algorithm ... Proteinuria (Negative urine ... Proteinuria (Positive urine ... sediment - WBC/RBC casts ... Differential #Diagnosis #Algorithm
Causes of Non-Gap Metabolic Acidosis - Differential Diagnosis Algorithm
Normal Anion Gap (<14) (Loss of Bicarbonate) -
Differential Diagnosis Algorithm ... Loss (Negative urine ... net charge High FE-HCO3 ... Differential #Diagnosis #Algorithm
Differential Diagnosis of Hypoglycemia
Evaluation of Hypoglycemia
Patients with known diabetes who are not systemically ill and can
workup: CXR, UA, urine ... Diagnosis #EM #IM ... #Differential #Algorithm
Causes of Hematuria - Differential Diagnosis Algorithm
Red blood cells on urine microscopy. Must exclude false positives
Differential Diagnosis Algorithm ... blood cells on urine ... RBCs and/or RBC casts ... Differential #Diagnosis #Algorithm
Algorithm - Approach to the differential diagnosis of the patient presenting with overt glomerular proteinuria. CMV
Algorithm - Approach ... arbitrarily defined as urine ... cell/white cell casts ... because nephritic urine ... #Algorithm #differential