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J Vet Diagn Invest. 2017 May;29(3):316-320. doi: 10.1177/1040638717695607. Epub 2017 Mar 28.

Antibiotic resistance patterns of bacteria isolated from indwelling Foley catheters following tube cystostomy in goats with obstructive urolithiasis.

Chigerwe M1,2,3, Mavangira V1,2,3, Byrne BA1,2,3, Angelos JA1,2,3.

Author information

1
Departments of Medicine and Epidemiology (Angelos, Chigerwe), University of California-Davis, Davis, CA.
2
Pathology, Microbiology and Immunology (Byrne), University of California-Davis, Davis, CA.
3
Large Animal Clinical Sciences, Michigan State University, East Lansing, MI (Mavangira).

Abstract

Tube cystostomy is a surgical method used for managing obstructive urolithiasis and involves placement of a Foley catheter into the urinary bladder. We identified and evaluated the antibiotic resistance patterns of bacteria isolated from indwelling Foley catheters following tube cystostomy in goats with obstructive urolithiasis. Urine samples collected over a 10-y period from catheter tips at the time of removal were submitted for bacteriologic culture and antibiotic susceptibility testing. Resistance patterns to antibiotics, trends in the resistance patterns over the study period, and the probability of a bacterial isolate being resistant as a function of the identity of the isolate and antibiotic tested were determined. A total of 103 urine samples from 103 male goats with obstructive urolithiasis managed surgically with tube cystostomy were included in the study. Aerococcus (36.9%) and Enterococcus (30.1%) were isolated most frequently. The susceptibility patterns of all bacteria isolated did not change over the study period ( p > 0.05). Proportions of isolates resistant to 1, 2, and ≥3 antibiotics were 36.9%, 18.5%, and 23.3%, respectively. Thus, 41.8% of bacterial isolates were resistant to 2 or more antibiotics tested. The probability of Aerococcus spp., Escherichia coli, and Pseudomonas aeruginosa isolates to be resistant to ampicillin, ceftiofur, erythromycin, penicillin, or tetracycline ranged from 0.59 to 0.76.

KEYWORDS:

Antibiotic resistance; Foley catheter; goats; tube cystostomy; urolithiasis

PMID:
28351339
DOI:
10.1177/1040638717695607
[Indexed for MEDLINE]

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