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Survival and complications in cats treated with subcutaneous ureteral bypass
Author(s) -
Kulendra N. J.,
Borgeat K.,
Syme H.,
Dirrig H.,
Halfacree Z.
Publication year - 2021
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.13226
Subject(s) - medicine , cats , creatinine , urinary system , retrospective cohort study , surgery , renal function , complication , clinical significance , survival analysis , population , urology , environmental health
Objectives To report the complications and factors affecting outcome for cats following placement of a subcutaneous ureteral bypass (SUB™). Materials and Methods In this retrospective study, complications, the presence of a urinary tract infection and survival time were recorded following subctutaneous ureteral bypass placement. Factors affecting survival time were assessed using a Kaplan Meier curve and log rank test. Results Ninety‐five cats had 130 subcutaneous ureteral bypasses placed. Ten cats did not survive to discharge. Forty cats died or were euthanised after discharge (42%); the median survival time of these cats was 530 days (range 7 to 1915). Minor complications occurred in 18 cats (19%) and major complications occurred in 46 cats (48%), the majority of which were after hospital discharge. Twenty‐seven cats were diagnosed with a urinary tract infection (UTI) post‐operatively. A significant association between long‐term survival and creatinine at presentation was identified. The median survival time for cats presenting with creatinine concentration ≥440 μmol/L (International Renal Interest Society stage acute kidney injury (AKI) 4 and 5) was 530 days (95% CI 273–787 days), compared to a median survival time of 949 days (95% CI 655–1243 days; Log Rank P=0.024) for those cats presenting with creatinine <440 μmol/L (International Renal Interest Society stage AKI 1–3). Clinical Significance In this population of cats, subcutaneous ureteral bypass placement was associated with an approximately 10% in‐hospital mortality and a high complication rate. Most complications were manageable, resulting in an overall median survival time of over 2 years.