The Journal of small animal practice · 2020
Outcome of SUB placement for the treatment of benign ureteral obstruction in dogs: nine dogs and 12 renal units (2013 to 2017).
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Milligan M L, Berent A C, Weisse C W, Lamb K, Toizer E
Аннотация
OBJECTIVES: To describe a group of dogs with benign ureteral obstruction(s) treated by subcutaneous ureteral bypass and report the intra-operative, peri-operative, short- and long-term outcomes.
MATERIALS AND METHODS: Review of medical records of dogs that underwent subcutaneous ureteral bypass.
RESULTS: Nine dogs (12 renal units) were included. Causes of obstruction included: ureterolithiasis (n=9) extraluminal compression (n=2), and stricture (n=1). Eleven of 12 ureters had a previously placed stent and required subcutaneous ureteral bypass for: recurrent stricture (n=4), diffuse ureteritis (n=4) or stent migration (n=3). Placement was successful in all renal units and there were no peri-operative or procedure-related deaths. Median hospitalisation time was 3 days. The median creatinine values pre-operatively and 3 month post-operatively were 186 and 106 μmol/L, respectively. No dog had worsening azotaemia in the short-term. The most common long-term complication was mineralisation of six devices, of which four required exchange. All dogs that were infected post-operatively (n=5) had a history of at least one urinary tract infection pre-operatively. One of the nine dogs had a chronic post-operative urinary tract infection and had been chronically infected before placing the bypass. The median survival time was >774 days, with five of nine dogs alive at the time of publication.
CLINICAL SIGNIFICANCE: Placement of a subcutaneous ureteral bypass was an effective short-term treatment option for benign ureteral obstructions in dogs but there was a high rate of device mineralisation.
MATERIALS AND METHODS: Review of medical records of dogs that underwent subcutaneous ureteral bypass.
RESULTS: Nine dogs (12 renal units) were included. Causes of obstruction included: ureterolithiasis (n=9) extraluminal compression (n=2), and stricture (n=1). Eleven of 12 ureters had a previously placed stent and required subcutaneous ureteral bypass for: recurrent stricture (n=4), diffuse ureteritis (n=4) or stent migration (n=3). Placement was successful in all renal units and there were no peri-operative or procedure-related deaths. Median hospitalisation time was 3 days. The median creatinine values pre-operatively and 3 month post-operatively were 186 and 106 μmol/L, respectively. No dog had worsening azotaemia in the short-term. The most common long-term complication was mineralisation of six devices, of which four required exchange. All dogs that were infected post-operatively (n=5) had a history of at least one urinary tract infection pre-operatively. One of the nine dogs had a chronic post-operative urinary tract infection and had been chronically infected before placing the bypass. The median survival time was >774 days, with five of nine dogs alive at the time of publication.
CLINICAL SIGNIFICANCE: Placement of a subcutaneous ureteral bypass was an effective short-term treatment option for benign ureteral obstructions in dogs but there was a high rate of device mineralisation.