ureteral obstruction


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ureteral obstruction

Acute unilateral obstructive uropathy Urology A unilateral block of urine flow through the ureter of 1 kidney, resulting in a backup of urine, distension of the renal pelvis and calyces, and hydronephrosis Etiology Kidney stone, trauma, stricture in children–of one ureter causes acute unilateral obstructive uropathy; slow, progressive blockage causes chronic unilateral obstructive uropathy; either may result in permanent damage and failure of one kidney and HTN, resulting in the so-called Goldblatt kidney, which is usually asymptomic–the remaining kidney usually has functional reserve. See Goldblatt kidney, Reflux nephropathy.
References in periodicals archive ?
The utility of cystoscopy with IV indigo carmine as a screening test for ureteral obstruction is highlighted by the fact that most obstructions were relieved by intra-operative suture removal following positive cystoscopy.
The reason for the poor correlation between PCN and urethral urine culture results could be related to complete ureteral obstruction, which often prevents microorganisms from travelling from upper urinary tract down to the bladder.
A radiologist and a urologist independently reviewed all CT scans for predefined criteria of ureteral obstruction (no obstruction, partial, or complete obstruction) based on degree of hydronephrosis, hydroureter, nephromegaly, and perinephric stranding.
Cyclooxygenase 2 (COX-2) is induced in response to unilateral ureteral obstruction (UUO), and COX-2-derived prostaglandins have been associated with the proinflammatory response, primarily prostaglandin E2 (PGE2) and PGI2, which are increased in the early phase of inflammation [2].
Second, the composition of the study population may not represent all patients with ureteral stents because the majority of the causes of ureteral obstruction in this study were from malignancy.
Aspergillus fungal balls causing ureteral obstruction. Urol J 2009; 6: 127-9.
Bilateral ureteral obstruction due to envelopment and compression by an inflammatory retroperitoneal process.
Through this model, one would be able to test drugs, seek biochemical markers, assess radiopharmaceutical produces, research pathological features related to ureteral obstruction, and evaluate therapeutic methods.
Acute ureterolithiasis: nonenhanced helical CT findings of perinephric edema for prediction of degree of ureteral obstruction. Radiology 1999; 213:663-67.
This was successfully determined during a 20-day chronic unilateral ureteral obstruction in experimental dogs.