Ureteral Obstruction Management in Veterinary Medicine
Summary
Ureteral obstruction represents a significant clinical challenge in companion animals, most commonly arising from calculi, strictures or iatrogenic injury. Obstruction impedes urine flow from the renal pelvis to the bladder, leading to hydronephrosis, progressive azotaemia and risk of renal loss if untreated. Early recognition relies on imaging modalities such as ultrasonography, radiography and advanced cross-sectional techniques. Initial management focuses on stabilisation with intravenous fluids, analgesia and correction of electrolyte disturbances. Definitive treatment may be medical—using diuretics, analgesics and ureteral muscle relaxants—or interventional, employing ureteral stents or subcutaneous bypass devices to restore patency. Surgical options include ureterotomy, ureteroneocystostomy or bypass implantation, each with distinct risk profiles. Long-term monitoring addresses device complications, recurrent obstruction and lower urinary tract signs. Emerging approaches emphasise minimally invasive techniques, improved stent materials and tailored postoperative protocols to optimise renal preservation and quality of life for both feline and canine patients.
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Ureteral Obstruction Management in Veterinary Medicine publication trend
The graph below shows the total number of articles in ureteral obstruction management in veterinary medicine across all publications each year (not limited to Nature Index journals).
Technical terms
Ureteral stent: A tubular implant placed within the ureter to maintain urine flow past an obstruction.
Subcutaneous ureteral bypass: A surgically implanted device that diverts urine from the renal pelvis to the bladder beneath the skin.
Urolith: A stone or calculus formed within the urinary tract.
Hydronephrosis: Swelling of the kidney due to accumulation of urine behind an obstruction.
Azotaemia: The accumulation of nitrogenous waste products in the blood, indicating impaired kidney function.
References
- Survival and complications in cats treated with subcutaneous ureteral bypass. Journal of Small Animal Practice (2020).
- Analysis of 7866 feline and canine uroliths submitted between 2014 and 2020 in the Netherlands. Research in Veterinary Science (2021).
- Epidemiologic evaluation of calcium oxalate urolithiasis in dogs in the United States: 2010‐2015. Journal of Veterinary Internal Medicine (2019).
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