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Outcome of SUB placement for the treatment of benign ureteral obstruction in dogs: nine dogs and 12 renal units (2013 to 2017)
Author(s) -
Milligan M. L.,
Berent A. C.,
Weisse C. W.,
Lamb K.,
Toizer E.
Publication year - 2020
Publication title -
journal of small animal practice
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.7
H-Index - 67
eISSN - 1748-5827
pISSN - 0022-4510
DOI - 10.1111/jsap.13137
Subject(s) - medicine , surgery , ureter , stent , urinary system , complication , creatinine , urinary tract obstruction , urology
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.