Evaluation of catheter-associated urinary tract infections and multi-drug-resistant Escherichia coli isolates from the urine of dogs with indwelling urinary catheters.
OBJECTIVE
To determine the frequency of urinary tract infections (UTIs) in dogs with indwelling urinary catheters in an intensive care unit (ICU) and the frequency of multi-drug-resistant (MDR) Escherichia coli UTIs in those dogs.


METHODS
Prospective study.


METHODS
All dogs in the ICU with an indwelling urinary catheter from January 2003 through December 2003.


METHODS
Urine samples and rectal swab specimens were collected at admission and every 3 days until discharge from the hospital. Escherichia coli isolates from urine samples and rectal swab specimens and those from dogs that were temporally or spatially associated with dogs with MDR E coli UTIs underwent antimicrobial susceptibility testing. Pulsed-field gel electrophoresis was performed on MDR isolates from urine and rectal swab specimens.


RESULTS
Urinary catheters were placed in 137 dogs. Twenty-six UTIs were diagnosed, 15 on the day of admission and 11 after 3 or more days of catheterization. Of 12 dogs with E coli UTIs, 6 were infected at admission and 6 acquired the infection in the ICU. Two MDR E coli UTIs were detected, 1 of which was acquired in the ICU. One MDR E coli urinary isolate had an electrophoresis pattern similar to that of rectal isolates from the same dog. Urinary E coli isolates were most frequently resistant to ampicillin and cephalothin.


CONCLUSIONS
The ICU-acquired MDR E coli UTI likely originated from the dog's intestinal flora during hospitalization. Dogs that have been referred from a community practice may have MDR E coli UTIs at the time of admission.
Ogeer-Gyles
Jennifer
J
Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada.
Mathews
Karol
K
Weese
J Scott
JS
Prescott
John F
JF
Boerlin
Patrick
P
D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D002408:Catheters, Indwelling / Q000009:adverse effects*; D015169:Colony Count, Microbial; D003428:Cross Infection / Q000662:veterinary; D004283:Dog Diseases / Q000188:drug therapy / Q000209:etiology / Q000382:microbiology*; D004285:Dogs; D024881:Drug Resistance, Bacterial; D024901:Drug Resistance, Multiple, Bacterial; D004926:Escherichia coli / Q000187:drug effects*; D004927:Escherichia coli Infections / Q000188:drug therapy / Q000209:etiology / Q000382:microbiology / Q000662:veterinary*; D005260:Female; D006760:Hospitalization; D008297:Male; D008826:Microbial Sensitivity Tests / Q000662:veterinary; D011446:Prospective Studies; D012007:Rectum / Q000382:microbiology; D014552:Urinary Tract Infections / Q000188:drug therapy / Q000209:etiology / Q000382:microbiology / Q000662:veterinary*; D014556:Urine / Q000382:microbiology
D000900:Anti-Bacterial Agents