124 results
UROLITHIASIS 

80% of stones are composed of calcium oxalate or phosphate. Others include uric acid (9%),
staghorn or large calculus ... overwhelms the renal ... secondary to elevated urine ... acid levels, low urine ... hydronephrosis # hematuria
Causes of Hematuria - Differential Diagnosis
Renal:
 - Glomerular - IgA Nephropathy, Thin basement membrane, Alport syndrome,
Causes of Hematuria ... Differential Diagnosis Renal ... or other tumor, Calculi ... - Malignancy, Calculi ... Schistomiasis, Malignancy, Calculi
Hematuria - Differential Diagnosis Framework

Gross Hematuria: Red/Dark urine
 • 1ml blood/liter urine can induce color change
: Red/Dark urine ... 1ml blood/liter urine ... more RBC/HPF spun urine ... examination of urine ... #urine #blood
Types of Renal Calculi

Calcium oxalate
 - Interstitial apatite plaque, Low urine volume, Increased urinary calcium excretion,
Types of Renal Calculi ... apatite plaque, Low urine ... duct plaque, Low urine ... phosphate: alkaline urine ... heart failure #Calculi
Algorithm and Differential Diagnosis of Macroscopic Hematuria
Important Historical Elements:
- Painless: suggests malignancy
- Painful: suggests calculi/infection
- Urinalysis:
of Macroscopic Hematuria ... Painful: suggests calculi ... suggest intrinsic renal ... #IM #Urology #Hematuria
Causes of Hematuria - Differential Diagnosis Algorithm
Red blood cells on urine microscopy. Must exclude false positives
Causes of Hematuria ... blood cells on urine ... Tubulolnterstitial • Calculi ... • BPH • Calculi ... ) - Isolated Hematuria
Hematuria Workup and Diagnosis Algorithm
 • Confirm hematuria → Urinalysis >3 RBCs/HPF, exclude mimics, repeat testing
Hematuria Workup ... Algorithm • Confirm hematuria ... WBCs, or urine ... Nephrology for renal ... uw_IMresidency #Hematuria
Imaging Modalities for Renal Calculus

AXR. KUB
 - Good far calcium-containing stones useful when limited radiation dose
Modalities for Renal ... Calculus AXR ... for ureteric and renal ... for ureteric and renal ... #Renal #Kidney
Hematuria in Post-Renal Transplant Patient
Prevalence up to 12% in the postrenal transplant patient
 • Bacterial: Escherichia
Hematuria in Post-Renal ... infections (HPV, EBV), Renal ... TheIDtrivia #Hematuria ... #Renal #Transplant ... kidney #blood #urine
Nephritic vs Nephrotic Syndrome

Step 1: If the patient has hematuria and/or proteinuria, think about nephrotic/nephritic syndromes.
Step
the patient has hematuria ... have glomerular hematuria ... dysmorphic RBCs in urine