hematuria Flashcards
(41 cards)
What is hematuria?
Presence of at least 5 red blood cells per high-power field (400x) in the urinary sediment.
Difference between gross and microscopic hematuria?
Gross is visible to the naked eye; microscopic is only detectable via lab analysis.
What is pseudohematuria?
Red or discolored urine not due to blood (e.g., food, medications, or vaginal bleeding).
What is pigmentary hematuria?
Urine discoloration due to pigments like hemoglobin or myoglobin, not whole blood cells.
What is urethrorrhagia?
Bleeding from the urethra, not classified as true hematuria.
What is medical hematuria?
Hematuria due to systemic or medical causes such as coagulopathies or glomerulonephritis.
What is urological hematuria?
Hematuria caused by pathology in kidneys, ureters, bladder, urethra, or prostate.
What are pre-renal causes of hematuria?
Coagulopathies, hemoglobinopathies.
What are renal causes of hematuria?
Glomerular diseases, tubular necrosis, papillary necrosis.
What are common ureteral causes of hematuria?
Stones, tumors, infections, iatrogenic damage.
Name two iatrogenic causes of hematuria.
Ureteroscopy, catheter trauma.
How can nephrolithiasis cause hematuria?
Stones cause inflammation and mucosal injury leading to bleeding.
What bladder conditions may cause hematuria?
Stones, carcinoma, cystitis, trauma.
What is the effect of BPH on hematuria?
BPH may cause bladder vein rupture and hematuria.
What prostate conditions can lead to hematuria?
BPH, prostatitis, prostate cancer.
What are vascular anomalies that cause hematuria?
Polycystic kidney disease, arteriovenous malformations.
Can trauma cause hematuria?
Yes, blunt or penetrating renal or urological trauma can cause hematuria.
What is the first step in evaluating hematuria?
Detailed medical history and physical examination.
What lab test is key in microhematuria?
Urinalysis with sediment examination.
Why use urine cytology in hematuria workup?
To detect urothelial carcinoma.
What does the three-glass test differentiate?
Helps localize bleeding to urethra, bladder, or kidneys.
Which imaging test is essential for hematuria?
Ultrasound or CT-IVU depending on suspicion.
What is the role of cystoscopy?
Direct visualization of bladder to identify bleeding sources.
What does CT-IVU assess?
Ureter, renal pelvis, and parenchymal causes.