Risk factors for positive urine cultures in cats with subcutaneous ureteral bypass and ureteral stents (2010-2016)

Lucy Kopecny, Carrie Palm, Kenneth J. Drobatz, Ingrid Balsa, William T Culp

Research output: Contribution to journalArticle

Abstract

Background: Ureteral stent and subcutaneous ureteral bypass (SUB) placement are commonly used for managing ureteral obstructions. Urinary tract infection (UTI) is a recognized complication. Objectives: To determine postoperative incidence of positive urine cultures in cats undergoing ureteral stent and SUB placement and to identify risk factors associated with positive urine cultures. Design: Retrospective study. Animals: Forty-three cats that underwent 48 surgical events. Procedures: Medical records were reviewed. Cats were included if urine cultures were performed before and after surgery. Variables were compared to identify risk factors. Results: Urine cultures were positive postoperatively pre-discharge in 5/20 (25%) cats. Median duration of follow-up post-discharge was 209 days (range, 11-2184 days), with a total of 143 urine cultures performed in cats post-discharge. Of these, 16 (11%) were positive in 12/48 (25%) cats. Nine different bacteria were identified; Enterococcus spp. (n = 8) predominated as monomicrobic or mixed infections. In 14/16 instances of positive urine cultures, affected cats had lower urinary tract signs, signs of pyelonephritis or both. Cats that received antibiotics postoperatively were significantly less likely to have a positive urine culture compared to those that did not (odds ratio, 0.2, 95% confidence interval, 0.05, 0.8, P = 0.02). Chronic kidney disease, renal implant type and postoperative urinary catheterization were not associated with positive urine cultures. Conclusions and Clinical Relevance: Postoperatively, occurrence of positive urine cultures was similar to previous reports. Subclinical bacteriuria was less common than UTI. Postoperative urinary catheterization has been speculated to increase risk of bacteriuria, but this was not the case in this cohort.

Original languageEnglish (US)
JournalJournal of Veterinary Internal Medicine
DOIs
StateAccepted/In press - Jan 1 2018

Fingerprint

Stents
Cats
urine
risk factors
Urine
cats
Urinary Catheterization
urinary tract diseases
Bacteriuria
catheters
Urinary Tract Infections
pyelonephritis
Ureteral Obstruction
prostheses
Pyelonephritis
urinary tract
Enterococcus
kidney diseases
Urinary Tract
Coinfection

Keywords

  • feline
  • interventional radiology
  • renal decompression
  • ureter
  • urinary tract infection

ASJC Scopus subject areas

  • veterinary(all)

Cite this

@article{3666b23a6a9441f8828b92d8aed96fc5,
title = "Risk factors for positive urine cultures in cats with subcutaneous ureteral bypass and ureteral stents (2010-2016)",
abstract = "Background: Ureteral stent and subcutaneous ureteral bypass (SUB) placement are commonly used for managing ureteral obstructions. Urinary tract infection (UTI) is a recognized complication. Objectives: To determine postoperative incidence of positive urine cultures in cats undergoing ureteral stent and SUB placement and to identify risk factors associated with positive urine cultures. Design: Retrospective study. Animals: Forty-three cats that underwent 48 surgical events. Procedures: Medical records were reviewed. Cats were included if urine cultures were performed before and after surgery. Variables were compared to identify risk factors. Results: Urine cultures were positive postoperatively pre-discharge in 5/20 (25{\%}) cats. Median duration of follow-up post-discharge was 209 days (range, 11-2184 days), with a total of 143 urine cultures performed in cats post-discharge. Of these, 16 (11{\%}) were positive in 12/48 (25{\%}) cats. Nine different bacteria were identified; Enterococcus spp. (n = 8) predominated as monomicrobic or mixed infections. In 14/16 instances of positive urine cultures, affected cats had lower urinary tract signs, signs of pyelonephritis or both. Cats that received antibiotics postoperatively were significantly less likely to have a positive urine culture compared to those that did not (odds ratio, 0.2, 95{\%} confidence interval, 0.05, 0.8, P = 0.02). Chronic kidney disease, renal implant type and postoperative urinary catheterization were not associated with positive urine cultures. Conclusions and Clinical Relevance: Postoperatively, occurrence of positive urine cultures was similar to previous reports. Subclinical bacteriuria was less common than UTI. Postoperative urinary catheterization has been speculated to increase risk of bacteriuria, but this was not the case in this cohort.",
keywords = "feline, interventional radiology, renal decompression, ureter, urinary tract infection",
author = "Lucy Kopecny and Carrie Palm and Drobatz, {Kenneth J.} and Ingrid Balsa and Culp, {William T}",
year = "2018",
month = "1",
day = "1",
doi = "10.1111/jvim.15343",
language = "English (US)",
journal = "Journal of Veterinary Internal Medicine",
issn = "0891-6640",
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TY - JOUR

T1 - Risk factors for positive urine cultures in cats with subcutaneous ureteral bypass and ureteral stents (2010-2016)

AU - Kopecny, Lucy

AU - Palm, Carrie

AU - Drobatz, Kenneth J.

AU - Balsa, Ingrid

AU - Culp, William T

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Background: Ureteral stent and subcutaneous ureteral bypass (SUB) placement are commonly used for managing ureteral obstructions. Urinary tract infection (UTI) is a recognized complication. Objectives: To determine postoperative incidence of positive urine cultures in cats undergoing ureteral stent and SUB placement and to identify risk factors associated with positive urine cultures. Design: Retrospective study. Animals: Forty-three cats that underwent 48 surgical events. Procedures: Medical records were reviewed. Cats were included if urine cultures were performed before and after surgery. Variables were compared to identify risk factors. Results: Urine cultures were positive postoperatively pre-discharge in 5/20 (25%) cats. Median duration of follow-up post-discharge was 209 days (range, 11-2184 days), with a total of 143 urine cultures performed in cats post-discharge. Of these, 16 (11%) were positive in 12/48 (25%) cats. Nine different bacteria were identified; Enterococcus spp. (n = 8) predominated as monomicrobic or mixed infections. In 14/16 instances of positive urine cultures, affected cats had lower urinary tract signs, signs of pyelonephritis or both. Cats that received antibiotics postoperatively were significantly less likely to have a positive urine culture compared to those that did not (odds ratio, 0.2, 95% confidence interval, 0.05, 0.8, P = 0.02). Chronic kidney disease, renal implant type and postoperative urinary catheterization were not associated with positive urine cultures. Conclusions and Clinical Relevance: Postoperatively, occurrence of positive urine cultures was similar to previous reports. Subclinical bacteriuria was less common than UTI. Postoperative urinary catheterization has been speculated to increase risk of bacteriuria, but this was not the case in this cohort.

AB - Background: Ureteral stent and subcutaneous ureteral bypass (SUB) placement are commonly used for managing ureteral obstructions. Urinary tract infection (UTI) is a recognized complication. Objectives: To determine postoperative incidence of positive urine cultures in cats undergoing ureteral stent and SUB placement and to identify risk factors associated with positive urine cultures. Design: Retrospective study. Animals: Forty-three cats that underwent 48 surgical events. Procedures: Medical records were reviewed. Cats were included if urine cultures were performed before and after surgery. Variables were compared to identify risk factors. Results: Urine cultures were positive postoperatively pre-discharge in 5/20 (25%) cats. Median duration of follow-up post-discharge was 209 days (range, 11-2184 days), with a total of 143 urine cultures performed in cats post-discharge. Of these, 16 (11%) were positive in 12/48 (25%) cats. Nine different bacteria were identified; Enterococcus spp. (n = 8) predominated as monomicrobic or mixed infections. In 14/16 instances of positive urine cultures, affected cats had lower urinary tract signs, signs of pyelonephritis or both. Cats that received antibiotics postoperatively were significantly less likely to have a positive urine culture compared to those that did not (odds ratio, 0.2, 95% confidence interval, 0.05, 0.8, P = 0.02). Chronic kidney disease, renal implant type and postoperative urinary catheterization were not associated with positive urine cultures. Conclusions and Clinical Relevance: Postoperatively, occurrence of positive urine cultures was similar to previous reports. Subclinical bacteriuria was less common than UTI. Postoperative urinary catheterization has been speculated to increase risk of bacteriuria, but this was not the case in this cohort.

KW - feline

KW - interventional radiology

KW - renal decompression

KW - ureter

KW - urinary tract infection

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U2 - 10.1111/jvim.15343

DO - 10.1111/jvim.15343

M3 - Article

JO - Journal of Veterinary Internal Medicine

JF - Journal of Veterinary Internal Medicine

SN - 0891-6640

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